DO-214AA Modified TO-220 A SIEBE COMPANY 1801 HURD DRIVE IRVING, TEXAS 75038-4385 PHONE 214/580-1515 FAX 214/550-1309 MT1 MT2 General information The Teccor SIDACtor is a transient overvoltage protector with clamping voltage ranges of 27 to 540 volts. The SIDAC- tor can also be supplied in multiple-chip packages. Surge current ratings are from 50 amps to 100 amps (10X1000us). Upon application of a voltage exceeding the SIDACtor break- over voltage point, the SIDACtor switches on through a negative or positive resistance region to a low on-state voltage. Conduction will continue until the current is inter- rupted or drops below the minimum holding current of the device. If your electronic equipment is being protected by zener diodes, gas discharge tubes, MOVs or other types of protec- tors, you are taking unnecessary risks. The Teccor SIDACtor offers longer life and faster response than other types of protection. The bidirectional SIDACtor is ideal for protecting electronic equipment (telecommunications, computers, instrumenta- tion, etc.) from lightning, line transients, and other damaging high voltage spikes. The SIDACtor can be tailored to meet specific application requirements. The SIDACtor is faster than other currently-used devices or methods and is able to respond without voltage overshoot. Conventional gas discharge tubes, carbon arrestors, and MOV's are all slow to respond and allow significant voltage spikes above the clamping voltage before they begin to conduct. The SIDACtor is as fast as a zener diode, while offering a much lower impedance during conduction. SIDAC- tors can handle much more current and they are bidirec- tional. Teccors unique multi-chip packaging also offers complete protection of all circuit legs with a single package. SIDACtor (27 - 540 volts) The SIDACtor is normally connected between the high side of the circuit to be protected and common. As long as the voltage being monitored remains below the specified level, the SIDACtor presents a high off-state impedance (leakage current < 5yA). When the monitored voltage exceeds the specified level (clamping voltage), the SIDACtor starts clamping in nanoseconds. The SIDACtor will continue to conduct until the current is interrupted or drops below the minimum holding current of the device. SIDACtors do not degrade with time. bias, operations or surges within the device ratings. SIDACtors fails short circuit when the surge current exceeds the devices rated Ippor Itsm. Tape-and-reel packaging is available for both TO-92 and TO-220 packages; embossed carrier reel packing for DO- 214AA. Please consult the factory for more information. Features Bidirectional Transient Voltage Protection @ = Breakover Voltages from 27 to 40 volts s Clamping spesd of nanoseconds e Patented Multiple Chip Packages * Electrically isolated Packages Robust Surge Current Capabilities @ Glass-Passivated Junctions Teccor Electronics, Inc. 75 SIDACtorElectrical Specifications Part Number Definition P 210 3 AX XX xXx | PACKING OPTIONS ee table below DEVICE TYPE LEAD FORM OPTIONS P = SIDACtors TO-220 Modified ..... (See Page 108) TO-92 ooeeeeceeeee rece (See Page 104) IPP MAXIMUM (10x1000us) A= 50 amp or 75 amp VOLTAGE RATING _| (Except PXXX0BA70 is 100 amp) 030= 27 -36V B= 100 amp O60 = 54-72V 064 = 58-70V 072= 65-80V PACKAGE TYPE 080 = 60-95V A= MODIFIED TO-220 110= 90-125V B=TO-92 130 = 120 - 145V E=TO-92 150 = 135 - 165V S = DO-214AA 155 = 140- 170V 160 = 120 - 190V 200 = 190 - 215V 210 = 180 - 240V 220 = 190 - 250V CONSTRUCTION VARIABLE 220 = 205 - 230V 230 = 190 - 265V aoe eo aeey oN * secesreans oe 240 = 220 - 250V hoe NL a) SINGLE DEVICE 250 = 240 - 280V u TS$-PN (3) PINS 1 70.3 260 = 220 - 300V 270 = 240 - 300V OPN SEO arene ee 300 = 270 . 330V @) Nes TO 3 ONLY WITH TWO 300 = 280 - 320V 310 = 275 - 350V Oe Te A ---(3) "3" BALANCED TRIPLE SIDACTOR 320 = 280 . 350V Z BETWEEN ANY TWO PINS 330 = 300 - 360V 5 parenrep 340 = 300 - 380V 350 = 300 - 400V 480 = 440 - 580V 600 = 540 - 720V Bulk Pack and Reel Pack and Ammo Pack DO-214AA Embossed Carrier Reel Pack Bulk Pack Teccor Electronics, Inc. 76 SIDACtorSi Comments of testing, 100% Testir g iS a Cor stant monitor fo Repeated four times in Quality Assurance after surge current 1. Surge (lpr) This ensures proper Voltage 3. Holding Current (IH) Measured for a minimum value as rated 2. 4, a are transfer molded, Environmental and life tests are constantly being performed on the Sidactor to confirm long-term reliability. and durable. Listed below are some of these tests. to confirm 25C | The 1. High Temperature Storage + 150C for 250 hrs., no bias, ig Pe rag electrical 2 15 seconds dwell time at extremes. term The epoxy used in the molded Sidactor is UL recognized. 3. Thermal Shock 4 i passes UL 94V0 . Flammability tested to Industry standard test for molded epoxy package devices. 85% RH, + 85C for 100 hrs. minimum confirm initial 25C electrical 7. Humidity Life Test Surged 100 times simultaneously at rated lbp 10x1000 | This is to test the Ip surge life capabilities of the device. ySec. 8. Highly Accelerated Stress Testing (HAST) 9. Ipp Surge Life Test SIDACtor 77 Teccor Electronics, Inc.Electrical Specifications Bidirectional Veo Igo | Vorm | lorm Ipp trem Breakover Breakover | Blocking | Peak Off- Peak Pulse Current Peak One Cycle Voltage Current Voltage State Ty < 150C (Sinusoidal) Surge (Instantaneous (2) (4) Current at (7) (12) Current Clamping Vor (2) (17) Voltage) (1(5)(16)(19) Pack- Package Part age Number TYPE Volts Volts Amps PINS yAmps PINS wAmps | 10x160us | 10xS60us | 10x1000us Amps 1to3 1to3 MIN | MAX MAX MIN MAX MAX MAX MAX 60Hz 50Hz P0300EA70 27 36 10 20 5 100 50 50 30 25 PO640EA70 58 70 10 50 5 150 75 76 30 25 POT20EA70 65 80 10 50 5 150 75 75 30 25 POS00EA70 60 95 10 50 180 76 76 3 2 P1100EA70 90 125 10 75 100 50 50 30 25 E TYPE P1300EA70 120 148 10 96 5 100 &0 50 30 2 70 7082 P1500EA70 135 | 165 10 110 6 100 50 60 30 2 (Isolated) P2900EA7O 190 | 266 10 160 5 100 50 50 30 2 Paspegaro 220. | 300 40 180 5 100 50 50 30 2 P31 70 275 360 10 220 100 50 cee 50 3% 26 POSROEA7O wo | 400 10 240 5 100 60 50 3 26 P2sopga70 190 | 268 10 160 5 150 100 100 60 50 B P2600BA70 220 | 300 10 180 5 150 100 100 60 50 ' TYPE Pins |: | (13) 70 zl i3 P31008A70 275 | 350 10 220 5 150 100 100 60 50 TO-92 (lectater) P3500BA70 300 | 400 10 240 5 150 100 100 60 50 GENERAL NOTES @ All SIDACtor Leads are Tin/Lead plated with no less than 5% lead All measurements are made at 60Hz with a resistive load at an ambient temperature of +25C unless otherwise specified. Storage temperature range (Ts) is -65C to +150C. The case temperature (Tc) is measured as shown on the dimens:onal outline drawings. See Package Dimensions section. Junction temperature range (Ty) is -40C to +150C on all devices except for PO300EA70, PO300SA and PO602AA where Ty is -40'C to +125C. Lead solder temperature is a maximum of +230C for 10 seconds maximum: 2 1/16" (1.59mm) from case. All SIDACtors are Bidirectional and all Electrical Parameters aprly to both the forward and reverse polarities. All SIDACtors are recognized under UL 497B Protectors for Data Communications and Fire Alarm Circuits, UL File #E133083. content. All SIDACtors meet the surge requirements of the following standards: CCITT K17 -K20 10/700 us 15 kV 5/310 us 38 A VDE 0433 10/700 is 2kV 5/200 us 50A 0.2310 us 3B.A ELECTRICAL ISOLATION Teccors electrically isolated TO-92 and modified TO-220 SIDACtor will withstand a high potential test of 1600 VAC RMS from leads to case over the operating temperature range. Teccor Electronics, Inc. 78 SIDACtorPt kr ly Vim Co difdt RMS Surge (Non- | Continuous On-State DC | Holding Current Peak Off-State Off-State Critical Rate Repetitive) On-State or RMS Current (8) On-State Capacitance Capacitance of Rise of On-State Current For a Period (8)(18) Voltage at at Current of lp =1tAmp 1kHz 1VAC MHz 15mVAC 8.3 ms with with for Fusing 50VDC Bias 50VDC Bias (6) (20) (8) (20) Volts pF pF Amps? Sec Amps mAmps PINS PINS PINS Ampsius 1to3 1to3 1to3 MAX MIN MAX TYP TYP MAX 37 10 50 40 90 (20) 90 (20) 100 37 10 150 3 70 70 100 a7 10 160 30 70 7m 400 37 10 160 3.0 - 70 7 37 10 150 30 50 0 37 10 180 30 ey ra a7 10 150 3.0 38 36 37 10 180 40 5 a) 37 15 180 40 40 @ 100 a7 10 150 40 4 40 100 37 19 160 40 4 a 100 15.0 1.0 150 - 40 50 50 100 15.0 1.0 150 40 40 40 100 15.0 1.0 150 40 40 40 100 15.0 1.0 150 40 40 40 100 FOR NOTES TO ELECTRICAL SPECIFICATIONS See Pages 80 and 81. sow ratenca Doves ARSE RIBS E Bove Recreate Foc Pan cometh RBH UL 1469 Telephone Equipment Safety. Antone TRARY Too 1089 for Network aang ang garet quipment AN1012 Rae Tonsoni Se SLIC Subscriber Line interface Circuit AN1013 PTC's Using PTCs to Pass FCC Part 68 and UL1469 AN1020 Teccor Electronics, Inc. 79 SIDACtorBidirectional | V0 BO | Vorm | lonm lbp Irs Breakover Voltage | Breakover Blocking Peak Off- Peak Pulse Current Peak One Cycle (Instantaneous Current Voltage State Ty s 150C (Sinusoidal) Surge Clamping Voltage) (2) (4) Current at (7) (12) Current | (1)(5)(16)(19) Vorn (2) (17) Package | Package Part TYPE Number | | Amps Volts LAmps Volts Amps 10x160us | 10x560us | 10x1000us Amps MIN | MAX MAX MIN MAX MAX MAX MAX | 60Hz 50Hz PO300SA 27 36 10 20 5 100 60 50 30 26 POG40SA 58 70 10 50 5 150 75 75 30 26 P0720SA 66 80 10 80 5 150 76 75 30 25 PO800SA 60 95 10 50 6 | 160 78 78 30 25 PI100SA 90 125 10 75 6 | 100 50 50 30 25 Ss P12008A 120 146 10 96 6 100 50 50 30 25 f P1500SA 135 165 10 110 5 100 50 50 30 25 DO-214AA (isolated) Pamgsh 190 265 10 160 5 100 50 50 30 25 P2G0gSA 220 300 10 180 5 100 50 50 30 25 Pai 276 360 10 220 5 100 50 50 x 25 PSHpOSA 300 400 10 240 5 100 50 50 % 25 Pastese 190 265 10 160 5 150 100 100 60 50 Ss P2spose 220 300 10 180 5 150 100 100 60 50 mo P3/p0sB 275 350 10 220 5 150 100 100 60 50 | _._! . DO-214AA t P3500SB 300 400 ~S 10 240 5 150 | 100 100 60 50 (Isolated) (13) | i : L. All DO-214AA are embossed carrier reel packed for shipping. The suffix FA will automatically be inserted when ordering. Bulk pack is available upon special request. FOR GENERAL NOTES See Page 78. NOTES TO ELECTRICAL SPECIFICATIONS 1. See Figure 4 for Vso change vs junction temperature. 2. See Figure 5 for lorm vs junction temperature. 3. See Figure 2 for IH vs case temperature. 4. Repetitive Peak Off-State Voltage can also be referred to as Stand- Off Voltage or Blocking Voltage. 5. All devices have a negative resistance slope unless otherwise noted. Negative resistance slope devices Veo is measured at an applied rate- of-rise of voltage < 1 kV/Sec. See Figure 3A for V-| characteristics. 6. Capacitance Imbalance between forward and reverse polarities is typically < 15 pF. 7. See Figure 1 (A, B, C) for Pulse Wave Form. 8. Maximum Tc is 110C for TO-92 and 115C for modified TO-220, ex- cept maximum Tc is 75C for PO3OOSA, PO3O0CEA70 and 95C for PO602AA. 9. Surge rating is 2X with respect to Pin 2 during a simultaneous surge operation. 10. Between Pins 2 to 1 and Pins 2 to 3. Teccor Electronics, Inc. SIDACtort kr ly Vim Co di/dt RMS Surge (Non-Repetitive) Continuous On-State Holding Current Peak Off'State | Off-State Critical Rate On-State Current For a Period DC or RMS Curent (3) On-State Capacitance Capacitance of Rise of of (8)(18) Voltage at | at On-State 8.3 ms y= 1Amp 1kHz 1VAC | MHz 15mVAC Current for Fusing (14) with | with 50VDC Bias 50VDC Bias (6) (20) (6) (20) Amps? Sec Amps mAmps Volts pF pF Ampsius MAX MIN MAX TYP : TYP MAX 3.7 1.0 50 40 90 (20) 90 (20) 100 3.7 10 150 3.0 70 70 100 37 1.0 150 3.0 70 100 37 1.0 150 30 70 70 100 37 1.0 150 3.0 5 50 100 37 1.6 150 3.0 45 45 100 37 1.0 150 3.0 35 35 100 3.7 1.0 160 40 50 50 100 37 1.0 150 40 40 4 100 37 10 150 40 40 a 100 37 1.0 150 49 40 40 100 15.0 1.0 150 40 50 50 100 15.0 1.0 150 40 40 40 100 15.0 1.0 150 40 40 ao 100 15.0 1.0 150 40 40 40 100 NOTES TO ELECTRICAL SPECIFICATIONS (Continued) 11. Between any two pins. 12. The current wave virtual front duration is 1.25X rise time from 10% to 90% of crest. Virtual zero is defined as the intersection with zero axis of a straight line drawn through points on the front of the current wave of 10% and 90% crest. Waveforms defined per IEEE/ANSI C62.1 13. These devices have a positive resistance slope prior to switching. The initial breakdown voltage Vgo (MIN) is a DC measurement made at lao and Veo (MAX) or peak breakover voltage (Vpeak) is measured at 850 Volts/mSec. rate-of-rise voltage. See Figure 3B for V-I charac- teristics. 14. Minimum switching resistance is 1009. For best SIDACtor opera- tion, the load impedance should be near or less than switching resis- tance. 15. 260mA minimum Ip is available from the factory on special request 16. The UL4978 rate-of-rise of voltage requirements for Vao testing is 100V/s, 100V/us, 500V/pus, and 1kV/us. All SIDACtors Vaos to be +10% of ratings. 17. For more than one full cycle rating, see Figure 8. 18. Thermal Resistance PxxxSA DO214-AA Rec 28C/Watt and Rows = 90C/Wait. PxxxSB DO214-AA Reuc = 26C Watt and Ress = 85C/Watt. PxxxEA70 TO-92 Rac = 28C Watt and Ras = 90C: Watt. PxxxBA70 TO-92 Rouc = 26C Watt and Reis = 85C/Watt. PaaAA TO-220 Ra * 12C Watt and Raia = 50C Watt. PxxxAB TO-220 Reuc = 12C/Watt and Reis = 50C/Watt. 19. All SIDACtors have a Critical rate-of-rise of Off-State voltage at Rated Vprm, Ty < 150C, of 10kV/uSec. minimum, except PO300SA, PO300EA70 and PO602AA have a Ty<125C. 20. Co is measured at 20VDC bias on PO300SA, P0300EA70, and PO6O02AA. Teccor Electronics, Inc. 81 SIDACtorElectrical Specifications Bidirectional lop Breakover Voltage (Instantaneous Clamping Blocking | Peak Off- Peak Pulse Current Peak One Cycle Voltage) Current | Voltage State Ty < 150C (Sinusoidal) Surge (1)(5)(16)(19) (2) (4) | Current (7) (12) Current at VDRM (17) Package | Package | Part (2) TYPE Number Amps 10x160ps | 10x560us | 10x1000us yAmps MAX S| 8) S| 8) S| By Rl RB) Rl Ry Rl Rp Rye By Ry Ss 3% % 3 30 30 30 30 30 30 30 30 60 60 60 60 60 60 30 ae o S| 8| 8| 8) S| 8 S| S| 8| Ss S| S| 8) 8] 8] 8) &) 8 FOR GENERAL NOTES See Page 78. Teccor Electronics, Inc. 82 SIDACtor' Pt ly hi Vim RMS Surge (Non- | Continuous On- Holding Peak On-State Voltage Off-State Capacitance Off-State Capacitance Critical Rate Repetitive) On-State | StateDC orRMS| Current lp =1 Amp at 1kHz at IMHz of Rise of On- Current For a Period Current (3) (11) (14) VAC 15mVAC State Current of (8) with with 8.3 ms for Fusing 50 VDC Bias 50 VDC Bias (6) (20) (8) (20) Volts pF pF PINS PINS PINS PINS PINS PINS Amps? Sec Amps mAmps 3to2 1to3 3to2 1to3 3to2 1te3 AmpsiuS tto2 1to2 tto2 MAX MIN MAX MAX TYP TYP TYP TYP MAX 37 1.0 150 6.0 30 30 100 37 1.0 150 6.0 30 3 400 37 10 150 6.0 30 30 100 37 1.0 150 6.0 30 30 100 37 10 150 6.0 25 26 100 a7 10 150 60 25 5 100 3.7 1.0 50 4.0 8.0 90 45 90 45 100 (20) (20) (20) (20) 37 1.0 150 3.0 6.0 140 85 140 85 100 37 1.0 150 3.0 6.0 50 30 50 30 100 37 1.0 150 3.0 6.0 45 30 45 30 100 37 1.0 150 3.0 6.0 40 25 40 25 100 15.0 10 rn 3.0 6.0 140 85 140 85 100 15.0 1.0 78, 3.0 6.0 90 60 90 60 100 coe 15.0 10 78, 3.0 6.0 80 50 80 50 400 | 15.0 1.0 rent 3.0 6.0 75 45 76 45 as : 15.0 1.0 ried 40 8.0 50 35 50 35 100. 15.0 1.0 75, 40 8.0 50 30 50 3% 100 | 37 1.0 150 6.0 6.0 50 40 50 40 100 37 1.0 150 6.0 6.0 45 35 45 35 100 37 1.0 150 6.0 6.0 40 30 40 30 100 37 1.0 150 6.0 6.0 35 25 35 25 100 37 1.0 150 6.0 6.0 40 50 40 100 37 1.0 150 6.0 6.0 40 50 40 100 15.0 10 700 6.0 6.0 100 80 100 80 100: 15.0 1.0 rts 6.0 6.0 80 80 80 60 100: 15.0 1.0 ie, 6.0 6.0 70 55 70 55 16.0 10 A, 6.0 6.0 80 50 60 = 15.0 10 ie, 6.0 6.0 50 4 50 : 18.0 18 70 6.0 60 50 4 50 40 . FOR NOTES TO ELECTRICAL SPECIFICATIONS See Pages 80 and 81. Teccor Electronics, Inc. 83 SIDACtorElectrical Specifications Figure 1A Pulse Wave Form (10x1000ns) T T . TEST WAVEFORM o |<" PARAMETERS ze 100 | tr = 10s 8 r= TOL 2 90 |\ Peak Value - Ipp tq = 1000s i= g 3 | g Half Value - PP -, 3 50 |f N= 2 a I T % | 10x1000 Waveform | i < 10 - 1 0 ! 0 4 2 3 #4 #5 6 tg t- Time - mSec. Figure 1C Pulse Wave Form (10x160us) T t TEST WAVEFORM oa jt, PARAMETERS = 100 ' .=10 3 ; ,= 10 psec 2 90 | se Value - Ipp ty = 160 usec 2 A | 6 Half Value = PP ty 2 2 = 50 ---|-- | a | 10x160 Waveform o Y a | : s Q | = 49 | ! p~ 0 | 0 80 160 240 320 400 480 t - Time - uSec. Figure 3A V-| Characteristics of Devices with Negative Resistance I > w] | <aV7 \ \ \ Ag Hh \ a Vg ' - '5 ppm \, S<a Ibo \ + wy YorM Bo po0-V9) S*Us"Bo) Figure 1B Pulse Wave Form (10x560ps) TEST WAVEFORM 100 +t PARAMETERS t, = 10 psec . r 90 _| i Peak Value Ipp tg = 560usec | | Half Value =o =ty lpp - Peak Pulse Current - %lpp 60 /;_f-_|___ | oN oe Waveform | / t ~ 10 ~ ! ee 0 i 0 10 20 30 40 50 60 t- Time - uSec. Figure 2 Normalized DC Holding Current vs Case Temperature 1.8 1.6 IH = 25C) 1.4 1.2 Ratio of yc 0.8 0.6 0.4 = -40 -20 0 20 40 60 80 100 120 140 Case Temperature (Tc) - C Figure 3B V-| Characteristics of Devices with Positive Switching Slope A Te: f<YT VBO (MAX) ly > |s , <2 Vs or VPEAK IbRM ~<t 'bo <q a Lever ___. - > Vv Veo (MIN) Teccor Electronics, Inc. 84 SIDACtorFigure 4 Normalized Vgo Change vs Junction Temperature 14 12 Percent of Vag Change - % 40 -40 -20 20 60 80 100 120 140 160 Junction Temperature (Ty) - C Figure 6 Peak On-State Voltage vs Peak On-State Current for DO-214AA and TO-92 (Typical) 120 . So i E zt I 4. 100 _ - & To =25 = so | > 6 D % 60 ee ee 2 50 & 75 Amp 2 40 Devices 7 / > 8 ~-100 Amp & 20 Lu __ Pevices c s wD = | 2S 0 be 3 a 0 10 20 30 40 50 60 Peak instantaneous On-State Voltage (v7) - Voits Figure 5 Normalized Repetitive Peak Off-State (Leakage) Current vs Junction Temperature 201 _ V=VDRM 400 80 50 40 30 20 oo I Repetitive Peak Off-State Current (IpRM) Multiplier no wAo 20 30 40 50 60 70 80 90100 120 Junction Temperature (Ty) - C 140-160 Figure 7 Peak On-State Voltage vs Peak On-State Current for Modified TO-220, Pins 1 to 3 (Typical) a 240 a E z -. 200 To = 25C & 2 160 2 5 D % 120 2 | 6 t w 80 4 2 3 : oa i 5 / = 40 i 5 /- w ! : = 0 8 a 0 2 4 6 8 10 12 Peak Instantaneous On-State Voltage (v7) - Volts Figure 8 Peak Surge On-State Current vs Surge Current Duration 100 eT ee ee a a I en 80 PXXX0SB SUPPLY FREQUENCY: 60 Hz Sinusoidal --] 60 ~ PXXXOBA70 - LOAD: Resistive 4 8 40 NY PXXX2AB & ~~ RMS ON-STATE CURRENT T(AMs)) Max ~~ Ge PXXX3AB Rated Value at Specified Case Temperature eT 3 < | TYPES ~ + D> 20 | ~ NOTE: Overload may not be repeated e = | NL until Junction Temperature has =| | a - | lh returned to Steady-State rated S ZT 10 > value. a c 1 2s pxxxosa bt? 2 a 5 ~ PXXXXEA & - | SLE T Av 4 __PXXXXAA P xB 3 TYPES oo""_ o 2 rt] a 2 | t~ SS I | oSSS poo ele hs 1 2 3.465 10 20 30 4050 100 200 300 1000 Surge Current Duration - full cycles Teccor Electronics, Inc. 85 SIDACtorApplication Notes AN1010 FCC Part 68 and UL 1459 Metallic Protection Figure A - UL1459 Metallic AN1011 FCC Part 68 and UL 1459 Longitudinal Protection Fuse Prip / TIP ,) P3100SA ae) P3100EA70 or Protected P3500EA70 Equipment P3500SA RING (C}-. f\// ) RRing Consideration for Metallic Surge BOOV, 100A, 10x560us Selected Fuse Fuse RTOT RT&RR Required 10x560us 10x560,'s Rating Ipp of MIN MIN SIDACtor mA Amps Q Q Amps 360 25 32.0 12 no 400 28 28.6 10 5 | 500 35 23.0 7 co | 600 43 18.6 5 50 | 700 50 16.0 4 | 1000 78 10.3 4.15 400 _ Rrot=Rs+Rr+Rp (Rg = Source Impedance of Surge Generator) Vex (Surge) TOT Ipp (Fuse) 1. To meet UL1459, acurrent-limiting device (e.g. PTC, fuse) must be used. If using a fuse, Teccor recommends that the fuse rating be no greater than 1.0A. The 10x560us lep rating listed above is the maximum Ipp surge limitation of the selected Bel fuse (type MJS) without Rt and Rr. 2. Rt and Rr are optional with the SIDACtor. They are used to limit the 700A, 10x560us surge within the rating of the selected fuse. |.E., for a 500mA fuse an additional15Q (Rt=7.5Q, Rr=7.5Q) is necessary to prevent the fuse from opening during FCC Part 68 surge. Hence, Rt and Rr allow the circuit to pass Part 68 operationally. 3. If desired, Rt and Rr may be eliminated. This will ailow the circuit still to pass Part 68 and UL1459: however, it will pass FCC Part 68 non-operationally since the fuse will open. 4. The robustness of a circuit designed to pass FCC Part 68 non-operationally is dependent on the size of fuse used. The SIDACtor allows the engineer to use up to a full 1A_ tuse without any series resistance. See required 10x560us IFp of SIDACtor to determine the proper value of the SIDACtor for the selected fuse. 5. See application notes AN1017, AN1018, and AN1019$ for detailed description of FCC Part 68, UL1459, and circuit component value calculations. Figure B UL1459 Longitudinai Fuse rip Te OF Tf O P3203AA 4 i P3403AA ~ ' 1 To or Protected P3203AB NJ! P3403AB 7 Equipment ! _ ae | _ RING C})?/_-- AAA aa ED Fuse Rring Fuse Required 10x160s 10x160us Rating Ipp of SIDACtor mA Amps Amps 4 400 2 ; . 100 100 600 78 . : 100 1000 130 11.6 - 150 Rrot= Rs + Ry (on Rs + Rr Vex (Surge) TOT Ipp (Fuse) 1. To meet UL1459, a current-limiting device (e.g. PTC, fuse) must be used. If using a fuse, Teccor recommends that the fuse rating be no greater than 1.0A. The 10x160us Ipp rating listed above is the maximum Ipp surge limitation of the selected Bel fuse (type MJS) without Rt and Rr. 2. Rt and Rr are optional with the SIDACtor. They are used to limit the 200A, 10x160us surge within the rating of the selected fuse. |.E., for a 500mA fusean additional15.1Q on Rr and Rr is necessary to prevent the fuse from opening during FCC Part 68 surge. Hence, Rt and Rrallow the circuit to pass Part 68 operationally. 3. If desired, Rt and Rr may be eliminated. This will allow the circuit still to pass Part 68 and UL1459; however, it will pass FCC Part 68 non-operationally since the fuse will open. 4. The robustness of a circuit designed to pass FCC Part 68 non-operationally is dependent on the size of fuse used. The SIDACtor allows the engineer to use up to a full 1A fuse without any series resistance. See required 10x160ps Ipp of SIDACtor to determine the proper value of the SDIACtor for the selected fuse. 5. See application notes AN1017, AN1018, and AN1019 for detailed description of FCC Part 68, UL1459, and circuit component value calculations. Teccor Electronics, Inc. SIDACtorBellcore TR-NWT-0010839, Table 4-2 First level Lightning Surge Test (Telecommunications Port). P265 P3203AB Required Surge Test Number Peak voltage Peak Current Waveform time P282 P3002AB RTip & RRing Volts Amps pSec P272 P1500SA Q P283 P1500EA70 1 +600 100 10 x 1000 Withstand None 2 +1000 100 10 x 360 Withstand None 3 +1000 100 10 x 1000 Withstand None 4 +2500 500 2x10 Withstand None (1) 5 +1000 25 10 x 360 Withstand None AN1012 Bellcore TR-NWT-001089 "Electromagnetic Compatiblity and Electrical Safety Generic Criteria for Network Telecommunications Equipment". Table 4-2, First Level Lightning Surge tests (Telecommunications Port). There are designs and designers that prefer or require overvoltage protection devices that can withstand all 5 surges of Table 4-2 without the use of any series resistance (02). Meeting the challange, Teccor has developed devices specifically to pass operationally all 5 surges of Table 4-2. Teccor recommends the following Special Devices: P25 P3203AB, P282 P3002AB, P272 P1500SA or P23 P1500EA70. These devices are rated with an Ipp surge of 100 amp 10x1000us and 500 amp 2x10us (Surge #4). Note: (1)A standard SIDACtor with a 100 amp 10x1000us surye rating may be used, but an RTip = 120 and RRing = 129 minimum is required to pass Surge #4 operationally. The 12Q limits Surge #4 rise time to within the devices di/dt rating. AN1013 SLIC (Subscriber Line Interface Circuit) SLICs (Subscriber Line Interface Circuits) are normally op- erated from a nominal -50VDC supply (with respect to ground), located behind the ring generator or ring detectian circuit and do not see ring voltages. Protection of the SLC from a positive overvoltage is easily accomplished with a diode and in the negative polarity with a SIDACtor with ts minimum Vso greater than the -50VDC supply maximum voltage (typically 56.6VDC). Figure C shows how to protect a SLIC with a single SIDACtor and a diode bridge. The PO640EA70 or PO640SA SIDACtors offer Veo 58 volts minimum & 70 volts maximum with the ability to hold fast rising transients up to 1kV/usec to 70 volts maximum, thus protecting sensitive SLICs. The bridge may be a 4 pin DIP (surface mount package if preferred) or discrete components. The cost of this protection scheme ts approximately one half that of single SLIC protection cotn- ponents other manufacturers offer. Figures D & E show how to protect a SLIC with either a single P1602AA and two diodes or two discrete P2915 PO640SA (DO-214AA, surface mount packages). The P295 PO640SA contains one 58Vmin ~ 70Vmax SIDACtor chip and a diode. Figure C -SLIC Protection TIP) Q.. ------- PO640SA / PO640EA70 or (-) 2%. PO720SA e~ P0720EA70 a = e RING - Figure D - SLIC Protection TIPO P1602AA or P1602AB RING Figure E SLIC Protection TIP Q. -- ~~ i I it rt P295 POG40SA | | oy 1 1! ' P295 PO640SA RING Teccor Electronics, Inc. SIDACtorApplication Notes AN1014 Low Voltage Data Line Protection with the New 27 volt SIDACtor The Bidirectional Teccor 27 volt SIDACtor (PO300SA, PO300EA70 or PO602AA) is an ideal replacement for appli- cations using 30 volt, 600 & 1500 watt avalanche diodes and zener diodes. The 27 volt SIDACtors 50 amp 10x1000us surge rating is greater than the 36 amp 10x1000us surge current rating of the 1500 watt 30 volt avalanche diode or zener diode. The SIDACtors 90pF capacitance at 1MHz, 20VDC bias is much lower than the 30 volt 1.5kW avalanche and zener diode devices at 550pF. Induced AC surges occurring on data lines are a problem encountered with data transmission systems due to unfore- seen paralleled AC lines inducing voltages onto the data lines. The Teccor SIDACtor has a rating of 30 amps AC one cycle and 1 amps RMS continuous. A 1kVACrms at 1ARms for 30 seconds test was conducted with PO300EA70 SIDAC- tors and 30 volt 1.5kW avalanche diodes. The SIDACtor survived the test easily with typical Tc (Case Temperature) < 95C, where all the avalanche diodes tested failed electri- cally, achieved T.Ls (lead temperatures) great enough to possibly cause 60/40 Sn/Pb solder to reflow, and cracked their epoxy cases. (See Figures A and B.) Figure A - Data Line Protection Data 0). .----_-_- --@ aa | - I j PO300SA a | PQ300EA70 EE Data 1 - ee Qe wees RS-232 PO300SA LC. POQ300EA70 Data 7 O- _-----.- PO300SA POQ300EA70 Figure B - Data Line Protection Datad > eg PO602AA a a AS-232 Data 1 @ ee ee LC. Data6 aa eg POBO2AA oo Data 7 - =) ---- AN1015 Teccor Patented 3-Chip Y Configuration The patented TECCOR 3-chip Y configuration (using two SIDACtor chips in series between any terminal pair) offers additional protection in its operation. Example: When an overvoltage surge occurs on a typical telecommunication twisted pair line, a simultaneous longitudinal surge occurs (between Tip to ground and Ring to ground). The Tip or Ring terminal SIDACtor chip with the lowest Veo and the ceriter (or Ground) SiIDACtor chip will turn-on first (to the devices Vtm). This leaves the opposite side cof the 3-chip SIDACtor protector at the Veo of only one SIDACtor chip to ground, or approximately 1/2 Vgo rating of the device. The simultaneous voltage surge on the opposite side will also be at least at a voltage equal to Veo so the opposite side SIDACtor chip (at 1/2 Veo) will turn-on also. The low IH of the center (or ground) SIDACtor chip allows it to be the first SIDACtor chip to turn-on and the last to turn-off, to force and maintain the connection or path to ground. This patented 3-chip SIDACtor offers differential voltages between Tip and Ring terminals limited to approximately 1/2 Veo maximum rating of the de- vice occurring typically within a few hundred nanoseconds during a simultaneous longitudinal voltage surge. AN1016 On-Hook & Off-Hook Protection Requirements FCC, UL, Bellcore, etc. require telecommunications equip- ment to be surged in all its operating states. This refers to the two commonly referred to states as On-Hook state (ring generator or ring detection monitoring) and the Off-Hook state (operational state). The On-Hook state must allow operation of the normal battery voltage (DC bias) plus ring voltage without interference. The Off-Hook state should only allow operation of the battery voltage (DC bias) plus opera- tion signals and has a typical maximum of 70 to 80 volts (FCC Part 68 has a 70 volt maximum). Telecommunications equipment needs primary protection for the On-Hook surge and secondary protection for the Off-Hook surge (see AN1013, SLIC protection schemes). The two applications have different voltage protection requirements and therefore two overvoltage protectors are required. See Figure F below for circuit protection scheme. Figure F Complete PC Board Operation Protection On-Hook Tip Nee pe AA ete nee P3203AB > a Off-Hook = [ | pee lo AN Woo PS or i i Integrated wt . | PO64OSA WK lake SUC P3408AB i Ring | Oe ) i OUTSIDE ; | Relay KES |) Hybrid Telecom ed i | pBt03 ae xO Circuit Line ny | On-Hook U | Bridg we i OAD ent I ey Ae * t! Ring | Off-Hook | | Primary _ S| Secondary Wa Protection Ring Generator | Protection | ON-HOOK or 1 OFF- . Ring Detection | OFF-HOOK Voattery __ Circuit AN1017 FCC Rules Part 68, Subpart D Metallic Voltage Surge, Detailed The FCC Part 68 telecom Metallic Voltage Surge is an 800 volt, 100 amp 10x560us surge applied metallically (Line to Line) between tip and ring of a 2-wire connection. To select the proper SIDACtor Veo and calculate the Tip and Ring impedances required to limit the surge current within the surge current ratings of the SIDACtor, see Telecom Applica- tion Notes section on circuit calculations. To survive opera- tional and against a metallic voltage surge, see Figures G, H, &l. Teccor Electronics, Inc. 88 SIDACtorFigure G shows how to protect against an on-hook metallic surge without utilizing any circuit impedance using a P3100SB, P3100BA70, P3500SB or P3500BA70. This is because the surge current rating of the overvoltage protec- tion device (100 amp 10x1t000us) is greater than the surge requirement. Figure G FCC Part 68 Metallic i Te 36) O P3100SB --4--, P3100BA70 | 0 or a! Protected P3500BA70 VL Equipment I P3500SB <= j = O Figure H shows how to protect against an on-hook metallic surge utilizing circuit impedances to reduce the 100 amp metallic surge to less than the 50 amp 10x1000us surge capability of the P3100SA, P3100EA70, P3500SA or P3500EA70. RING = (} Figure H FCC Part 68 Metallic Te OC} yy ) P3100SA P3100EA70 i To or a Protected P3500EA70 Z Equipment ~ 4 P3500SA t RING =(.}/ O Figure | is the same as Figure H except it utilizes one fuss. The National Electric Code (NEC) article 800 states that telecommunication lines with no connections or paths :o ground are only required to incorporate one overcurrent protection device (fuse) in series with either Tip or Ring. Figure | FCC Part 68 Metallic Fuse Prip TIP ON II -____; P3100SA ~-4t--, P3100EA70 i | To or _ Protected P3500EA70 2 Equipment P3500SA Cn | RING. } A>. A AY (; Pring Longitudinal Voltage Surge The FCC Part 68 telecom Longitudinal Voltage Surge is a 1500 volt, 200 amp 10x160us. surge applied longitudinally (Line to Ground), between tip to ground, ring to ground ard tip tied to ring to ground. This surge has the highest peak current of the two FCC Part 68 telecom voltage surges. A circuit designed to withstand the Longitudinal voltage Surge should also survive the Metallic voltage Surge. The tip and ring impedances should be selected to reduce the applied surge current to within the selected SIDACtors surge rating. To calculate the Tip and Ring impedances, see Telecom Application Notes section on circuit calculations. To survive operational against an on-hook longitudinal voltage surge, see Figures J, K,L & M. Figures J & K show how to protect against a longitudinal surge with a single SIDACtor or two individual devices. A design consideration should be to know that during a Metallic voltage Surge, the protected circuit will see a voltage equal to two times the Vso (breakover voltage) of the selected device. Figure J - FCC Part 68 Longitudinal Rrip TPO OA I ats bo mt fol To ' Protected P6002AB : | Equipment I ' . RING C} A AA _ ) Pring Figure K - FCC Part 68 Longitudinal RTip TIP } VAY O P3100SA P3100EA70 To P3500SA P3500EA70 Protected or or | Equipment P3100SB = P3100BA70 ll P3500SB P3500BA70 = RING C/A = ) Rring Figure L shows a Delta configuration protection solution. It is the same as Figures J & K, except it has a third SIDACtor added between Tip and Ring that will limit the Metallic volt- age Surge to its breakover voltage (Vgo) level. Figure L - FCC Part 68 Longitudinal RTip me OA P3100SA P3100EA70 P3500SA P3500EA70 or or P3100SB P3100BA70 P3500SB P3500BA70 RING C}- AAA RRing Teccor Electronics, Inc. SIDACtorApplication Notes Figure M shows a Balanced Y configuration protection solution. This unique Teccor patented 3 chip Y configura- tion (using 2 SIDACtor chips in series between any two terminals) offers additional protection in its operation. See Telecom Applications Note explaining the patented 3 chip * configuration operation. Figure M - FCC Part 68 Longitudinal Tip m (C} O a 1 _ 1 P3203AA ' Z. ' To P3403AA ' ' Protected or ! T ! i Equipment P3203AB | - P3403AB i? | = ie (Sm. 4 AING ( }A A ee) Fring | AN1018 UL 1459 (Standard for Telephone Equipment) and CSA-C22.2 No. 225 (Telecommunications Equipment), _Detailed The UL 1459 and CSA-C22.2 No. 225 Metallic (M), differen- tial mode (Line to Line) and Longitudinal (L), common mode (Line to Ground), AC open circuit voltage and short circuit current test levels at 50 or 60 Hz are as follows: Test M-1 or L-1: 600 Vrms, 40 Arms, applied for 1.5 seconds. Test M-2 or L-2: 600 Vrms, 7Arms, applied for 5.0 seconds. Test M-3 or L-3: A. 600 Vrms, 2.2 Arms and B. This test is conducted at less than 2.2 Arms, 600 Vrmu3, with the short circuit current set just below the current inter- rupting devices (fuse or PTC) activation level Test M-4 or L-4: 200 Vrms, 2.2ArRms ;This test is conducted with the voltage set just below the breakdown voltage (Veo) of the overvoltage protection device (SIDACtor) and short circuit current just below the current interrupting device's (fuse or PTC) activation level. Test L-5: 120 Vrms, 25ARmS Test M-3, L-3, M-4, L-4 and L-5: are conducted for 30 min- utes or until an open circuit condition occurs. Note: Longitudinal surges are conducted simultaneously (Tip to Ground and Ring to Ground). Compliance with the testing is determined by the following: Telecom equipment shall not present a risk of fire (no ignition or charring of the cheese cloth indicator), no electrical shock and it shall not interrupt the current during the test (open the UL circuit wiring simulator, a fuse, Bussman Mfg. Co. type MDQ 1 6 amp). Using SIDACtors (overvoltage surge protectors) in cir- cuits to comply with UL 1459 and CSA-C22.2 No. 225 requirements: Note: U.L. requires components used to be U.L. recognized. CSA-C22.2 No. 225 does not require the components used to ne CSA certified. Only the final product meets the CSA requiie- ments. SIDACtors are recognized under UL 497B (Standard for Secondary protectors for data communications and fire alarm circuits). SIDACtor epoxy used is UL recognized and the encapsu- lated body passes UL 94V0 requirements for flammability. SIDACtors have 1600VACrRms electrical isolation between the leads and the case. SIDACtors are offered with Veo's (breakover voltages) greater than the normal operating voltages. SIDACtors will withstand the UL surges for the duration required for the UL circuit 1.6A fuse ta clear (open). If the SIDACtors surge current rating is exceeded, the SIDACtor will fail shorted and not open. UL 1459 Solution: Use a SIDACtor (overvoltage surge protector) and add a fuse or a resettable device, PTC (Posi- tive Temperature Coefficient). The minimum value of the fuse required is determined by the maximum normal operat- ing circuit currents (to allow normal circuit operation). The maximum fuse value is the UL circuit wiring simulator, the Bussman Mfg. type MDQ 1.6 amp fuse. Typical fuse values are between 250 mA and 1.0 amp. See Telecom Application Notes on circuit impedance calculations. Telecom equip- ment that must comply with UL 1459 must also comply with FCC Rules Part 68 Subpart D. To comply with UL 1459 and CSA-C22.2 No. 225 surge testing (by interrupting overcur- rent, open) and remain operational after FCC Rules Part 68 Subpart D on-hook Metallic and Longitudinal voltage Surges, see the following examples: Figure N shows a single SIDACtor and a fuse to protect against the on-hook UL Metallic surges. Note that FCC Part 68 does not require the circuit to be operational after the FCC surges. Figure O shows a single SIDACtor, resistor, and a fuse to protect against the on-hook UL Metallic surges. The resistor values are selected in conjunction with the fuse to pass FCC Metallic voltage Surge. A substitue for the fuse would be a PTC (Positive Temperature Coefficient) resettable current limiting device, such as is manufactured by Raychem. See Application Note AN1020. Figure N - UL1459 Metallic Fuse TIP O P3100SB P3100BA70 To or Protected P3500BA70 Equipment P3500SB RING C) O Figure O - UL1459 Metalic Fuse Arip nm OO __.c P3100SA ~-+--| P3100EA70 va To or | _ Protected P3500EA70 - Equipment P3500SA --|--- J RING ____{) Teccor Electronics, Inc. 90 SIDACtorFigures P & Q show a common scheme to protect against the on-hook UL surges using SIDACtor(s) and fuses. A design consideration should be to know that during a Metallic voltage Surge, the protected circuit will see a voltage equal to two times the Vso (breakover voltage) of the selected overvoitage protection device. Figure P - UL1459 Longitudinal Fuse RTip | ou Oy I O | at) I I J : i] To P6002AB ! t. Protected _ Equipment ~Z _[. ee iz | _ t=). J RING C} Ly e O [ Fuse Rring Figure Q - UL1459 Longitudinal Fuse Rip TP OU i Fh P3100SA P3100EA70 |e I P3500SA P3500EA70 | <7 | To or or 7 310088 P3100BA70 cauiperort P3500SB P3500BA70 1 ! 1 = TT = RING OA WA Fuse RRing Figure R shows a Delta configuration protection solution. It is the same as Figures P and Q except it has a third SIDACtor added between Tip and Ring that will limit the Metallic voltage Surge to its Vao (breakover voltage) level. r Figure R - UL1459 Longitudinal Fuse rip TIP > P3100SA P3100EA70 P3500SA P3500EA70 To or or Protected P3100SB P3100BA70 Equipment P3500SB P3500BA70 fl oo Ze : RING. (CO) nape O Fuse Pring Figure S shows a Balanced Y configuration protection solution using a Teccor patented 3 chip Y configuration P3203AB or P3403AB (with 150 amp 10x160uS surge capa- bility) or the P3203AA or P3403AA (100 amp 10x160uS surge capability). Figure S - UL1459 Longitudinal Fuse Prip mm O- 1) P3203AA FO403AA To Protected P3203AB8 t P3403AB Equipment (<a a RING C}A_- $$. AAA -_____ Fuse RRing AN1019 Circuit Calculations for FCC Part 68 and UL 1459 Selecting the proper SIDACtor Vso (Breakover voltage): take the circuit maximum operating Ring RMS voltage, con- vert this to a peak voltage and add the maximum operating dc bias. Veo (minimum) = V2[ RMS ring voltage maximum ] + { DC bias maximum ] EXAMPLE: Vgo (minimum) = V2[ 150 Vays maximum ] + [ 56.6VDC maximum ] Veo (minimum) = [ 212Vpeq, ] + [56.6V dc] = 268.6Vp.ax The SIDACtor Veo (minimum) should be greater than your maximum circuit operating voltages and the Veo (maximum) should be the protected components maximum voltage with- standing rating. A device with a Vago (minimum) = 275 voits will work for this example. The following equations are necessary for calculating the surge path impedances. Impedances can then be added to the circuit's series surge path to reduce the applied peak surge current to a value within the current carrying capabili- ties of the components used (SIDACtor and the fuse). (Rs) Surge Generator Internal Source Impedance: Open Circuit voltage divided by the Short Circuit Current. V Peak Source Impedance Rg = | Peak ( XRiiong)) Longitudinal Total Loop Impedance: Sum of all Loop Impedances in either Tip or Ring line to ground (but not both) including the Source Impedance. Longitudinal R tip dong = Rs + Rtip Note: Rtip = Rring Or Longitudinal } R ring dong = Rs + RRing Note: RTip(iong) = Rring(tong) Teccor Electronics, Inc. SIDACtorApplication Notes (Ipeak(tong)) Longitudinal Peak Surge Current: Open Cir- cuit voltage divided by the Sum of all Longitudinal Loop impedances. Vv LongitudinalTip | Peak iong) = __ Peak x R Tip (tong } Or : : Vv LongitudinalRing peak (long) = _Peak > R Ring (long } ( ZRimetal) ) Metallic Total Loop Impedance: Sum of all Loop Impedances in Tip and Ring including the Source Im- pedance. Metallic ZR (metal) = Rs + Rrtip + Rring If Rtip = Rring then Metallic ZR (metaly= Rs + [ 2Rtip] ( Ipeak(metal) ) Metallic Peak Surge Current: Open Circuit voltage divided by the Sum of all Metallic Loop Impedances. V Freak > R metal Metallic | peakmetay = The following examples show how to calculate the values of Rtip and Rring to reduce the applied surge current to within the surge ratings of the components used and to remain operational after the surges. Fuse Selection: Calculate the value of Rtip & Rring by first selecting a fuse using its applicable waveform surge with- standing rating, calculate XR (metal) or ZR (long) then Rtip & Rring. Then select a SIDACtor with an Ipp 10x1000uSec. or 10x160uSec. greater than or equal to the fuse IFeak 10x560uSec. or 10x160uSec. EXAMPLE 1: FCC Part 68 Metallic Surge (Line to Line), 800 volt, 100 amp 10x560puSec. 800Volts Metallic Amps N | nian 7.6 .3 40 3/8 |8/8|/8|s 700 3/8818 |B |B 1.00A 12 0.0 8 a8 80 Notes: (1) The Fuse Type and Waveform withstanding rating are BEL FUSE INC. type MJS. (2) Rtip & Rring values are minimum and should be chosen from the next higher standard ohm value. (3) If a 50 amp 10x1000ySec. rated SIDACtor is preferred, use a 4.0Q or greater resistor for Rtip & Rring. (4) The SIDACtor should be selected with an Ipp 10x1000uSec. equal to or greater than the applied 10x560uSec. surge current. EXAMPLE 2: FCC Part 68 Longitudinal Surge (Line to Ground), 1500 voit, 200 amp 10x160uSec. 1500V__7 6, Longitudinal Rs = 200Amps = 1500V Longitudinal R dong) = - 4 2 R long) IPeak (Fuse10x160 } Longitudinal Rtip = [ Ritong) - Rs] Note:Rtip=R Ring Metallic Rg = 400Amps~ 8.00 Longitudinal Metallic R metal) = 800Volts__ Selected Fuse Calculated | Calculated | SIDACtor Ipeak (Fuse 10x560) BEL FUSE 10x160us SR 2) 4 MUS | Withstanding it R S ecial Metallic R [Dd Rimetary - Rs] Wise Ratini en Tip = > (1) 10x160us Note: Rtip = Rrinc mA Amps Ohms Ohms Amps MIN MIN 260 32 463 394 4100 350 45 33.3 25.3 100 400 82 28.9 20.9 100 500 65 23.1 15.1 100 600 78 193 1.3 400 700 91 16.5 85 100 800 104 143 70 100 4000 130 11.6 41 150 1250 162 93 2.513) 150 Teccor Electronics, Inc. 92 SIDACtorNotes: (1) The Fuse Type and Waveform withstanding rating are BEL FUSE INC. type MJS. (2) Rtip & Rring values are minimum and should be chosen from the next higher standard ohm value. (3) A 2.5Q resistor was chosen (as opposed to the actual 1.8Q) to limit the peak current to within the rated value of the SIDACtor 10x160ySec. and not the fuse. (4) The SIDACtor should be selected with an Ipp 10x160uSec. equal to or greater than the applied 10x160uSec. surge current. AN1020 Using PTCs Figures Y & Z are suggested methods of passing FCC Part 68 metallic and longitudinal surges operationally, as well as complying with UL1459 using PTCs. The Raychem Polyswitch PTC resettable fuse circuit protector is a UL recognized Positive Temperature Coefficient (PTC) resistor. When an overcurrent condition occurs, the PTC dramaticaliy increases in resistance from its base resistance. The surge current is reduced typically to a few milliamps, that is, no significant current flow. After the over current condition sub- sides, the PTC resets to its base resistance allowing normal circuit operation to continue. For further information, call Raychem Polyswitch Division (1-800-227-4856). Figure - FCC Part 68 and UL1459 Metallic TR600-150 TIP O VA e Oo P3100EA70 vO OUIeMENT OR P3100SA RING o -O Figure Z - FCC Part 68 and UL1459 Longitudinal TR600-150 TP Og WM 5 TO PROTECTED P3203AA BALANCED : OR 2 CHIP P6002A8 : EQUIPMENT RING vi 4 5 TR600-150 AN1021- SIDACtors Used In AC Circuits SIDACtors can be used in any number of applications where the normal operating current of the line being protected is limited to less than the Iy (Holding current) or the Itsm (AC surge capability) of the SIDACtor. Excellent examples are security system sensors, zoning lines, the secondary side of transformers, the input side of a solid state relay and etc. . Figure U shows a typical AC circuit application using a SIDACtor (Q1) to protect a TRIAC (Q3) from an overvoltage surge. The Vorm rating of the TRIAC should be greater than the VBo maximum of the SIDACtor (Q1) and the Vgo mini- mum of the SIDACtor should be greater than the expected high AC line peak voltage. {VDRM (TRIAC}} > {VBO max )SIDACtor Q1) VBO min} > {AC line VPeak} SIDACtors may also be used on the secondary side of trans- formers to protect sensitive circuitry from overvoltages. SIDACtor (Q2) must be designed to handle both the transient peak current & waveshape plus the short circuit follow on current from the AC transformer secondary. The design should withstand a few cycles of AC current to avoid nui- sance fuse blowing. Figure U - Typical AC Applications Using SIDACtors as Transient Overvol tage Protectors Fuse uy O To Equipment 3 . AC | ae Input au 2 T Qy Equipment * Ry, limits the peak gate current to the triac. Pi Typical values are 47Q to 100Q. Triac . oa. To i Q3 * R2 is not required if the transformer secondary Gating 0 short circuit current is within the SiDACtor Circuit tse Fating. Teccor Electronics, Inc. 93 SIDACtor