62 Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 63
STANDARD PART NUMBERS FOR TL SERIES
TL104K–––
Ohmic value
TL54K–––
TL71K–––
TL88K–––
TL122K–––
Part No.
Prefix
Suffix
TL104K–––
Ohmic value
TL54K–––
TL71K–––
TL88K–––
TL122K–––
Part No.
Prefix
Suffix
ELECTRICAL/MECHANICAL SPECS
0.20"
5.10 mm
A
B
0.98"
25 mm
Profile 1.01"
25.7 mm
Footprint 0.96"
24.4 mm
C*
0.25"
6.3 mm
*For adjacent taps,
C = 0.665"
(16.9mm)
TL Series
Modular Heat Sinkable
Thick Film Power
Operating Dielectric
Ultra* Std** Ohm A B Voltage Withstanding
Series Wattage Wattage Range (mm) (mm) VAC Voltage VAC
TL54 35 27 0.3 - 1 Meg 54 46 1200 2500
TL71 96 71 1.0 - 2 Meg 71 63 1200 2500
TL88 155 114 1.5 - 3 Meg 88 80 1200 2500
TL104 215 158 2.0 - 4 Meg 104 96 1200 2500
†TL122 275 202 2.0 - 4 Meg 122 114 1200 2500
* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.
THERMAL RESISTANCE (°C/W)
TL54 TL71 TL88 TL104
Ultra Power(10% Tolerance) 1.26 0.53 0.34 0.25
Std Power (5% - 3% Tolerance) 1.67 0.70 0.45 0.33
The TL Series add heat sink-
able options to the thick film
resistor family. The resistor
element is packaged with plas-
tic insulators, and quick-con-
nect terminals in a symmetrical
aluminum profile for easy heat
sink mounting. Special tapped
configurations are offered to
reduce on board component
count.
Efficient thermal packag-
ing provides improved heat
conduction to the heat sink.
Self-insulating package design
increases voltage withstanding
characteristics when compared
to traditional aluminum hous-
ings. The in line mounting pro-
file makes the TL Series easily
adaptable to most heat sink
systems. Thermal compound
is always recommended when
heat sinking.
FEATURES
• Very low inductance
• Low profile design
• In-Line Mounting Profile
• 1/4” Quick connect terminals
• Consult factory for common,
isolated, or special multiple tap
options.
APPLICATIONS
• Semiconductor Balancing
• Frequency Converters
• Snubber
• In-Rush Current Limiter
• Bleeder Resistor
• Power Switching
• Voltage Dividers
SPECIFICATIONS
Material
Resistive Element: Thick Film on
Alumina
Housing: Aluminum
Insulators: Glass reinforced high
temperature Valox®
Terminals: Tinned brass
Electrical
Power Range: 27 – 275 watts
Resistance Range:
0.3 ohm – 4 megohm
Tolerance:
Ultra Power (U Style): ±10% std;
Standard Power: ±10% std;
5% and 1% available
Temperature Coefficient:
±250 PPM
Test Voltage for 1 Minute:
6000 VDC/2500 VAC
Working Voltage: 1200 VAC
External Creeping Distance:
12mm
Temperature Limits: -40°C to
+125°C
Insulation: >1002 Mohm/500V
Air Distance, Terminal to
Ground: 7mm
Inductance: 50-100 nH Consult factory for multiple tap options in common, isolated, and special configurations.
ORDERING INFORMATION
= Standard values
= Non-standard values subject to
minimum handling charge per
item
TL104KUR500E
Size
TL54 = 54 mm
TL71 = 71 mm
TL88 = 88 mm
TL104 = 104 mm
TL122 = 122 mm
Tolerance
F = 1%
J = 5%
K = 10%
Power
Blank = standard
U = ultra
Ohms
R500 = 0.50
10R0 = 10.0
1K00 = 1,000
1M00 = 1,000,000
E = RoHS compliant
Type
Values for Standard Resistors TL54 TL71 TL88 TL104 TL122
Max. Rated Wattage W 35 96 155 215 275
Nominal Power W 18 48 78 108 137
Surge Load in 10 sec W 72 192 312 432 548
Max Voltage Between Terminal V 1000 2000 2500 2500 2500
Resistance Min ohm 0.3 1 1.5 2 2
Resistance Max ohm 1 meg 2 meg 3 meg 4 meg 4 meg
Mechanics: A mm 54 71 88 104 122
B mm 46 63 80 96 114
C mm 16.9 33.8 50.7 67.6 84.5
Weight g 26 33 44 55 65
0.5 ––– R50
1.0 ––– 1R0
1.5 ––– 1R5
2.0 ––– 2R0
3.0 ––– 3R0
4.0 ––– 4R0
5.0 ––– 5R1
10.0 ––– 10R
15.0 ––– 15R
22.0 ––– 22R
47.0 ––– 47R
75.0 ––– 75R
100.0 ––– 100
150.0 ––– 150
220.0 ––– 220
240.0 ––– 240
470.0 ––– 470
510.0 ––– 510
750.0 ––– 750
1,000.0 ––– 1K0
1,100.0 ––– 1K1
2,200.0 ––– 2K2
4,700.0 ––– 4K7
5,100.0 ––– 5K1
10,000.0 ––– 10K
22,000.0 ––– 22K
51,000.0 ––– 51K
Check product availability at www.ohmite.com
64 Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 65
TL Series
Modular Heat Sinkable Thick Film Power
MAXIMUM AND NOMINAL POWER RATINGS FOR ULTRA POWER AND STANDARD POWER RESISTORS
TL54
TL71
TL88
TL104
TL122
Wattage
Heat sink temp, °C
0 20 40 60 80 100 120 140 160
100
0
TL104
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
150
200
250
50
Wattage
Heat sink temp, °C
0 20 40 60 80 100 120 140 160
40
0
20
30
10
TL54
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
Wattage
Heat sink temp, °C
0 20 40 60 80 100 120 140 160
120
0
80
100
20
TL71
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
60
40
Wattage
Heat sink temp, °C
0 20 40 60 80 100 120 140 160
100
0
TL122
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
150
200
300
50
250
Wattage
Heat sink temp, °C
0 20 40 60 80 100 120 140 160
120
0
80
100
20
TL88
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
60
40
140
160
180
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