STPS340U/S/B - STMicroelectronics

STPS340U/S/B

November 1998 Ed:5A

POWER SCHOTTKY RECTIFIER



Single chip Schottky rectifier suited for Switch

Mode Power Supplies and high frequency DC to

DCconverters.

Packaged in SMB, SMC and DPAK this device is

intended for use in low and medium voltage

operation, high frequency inverters, free wheeling

and polarity protection applications where low

switching lossesare required.

DESCRIPTION

SMB

STPS340U

VERYSMALLCONDUCTION LOSSES

NEGLIGIBLESWITCHING LOSSES

LOWFORWARD VOLTAGEDROP

LOWTHERMALRESISTANCE

EXTREMELYFAST SWITCHING

SURFACE MOUNTED DEVICE

Symbol Parameter Value Unit

VRRM Repetitivepeak reversevoltage 40 V

IF(RMS) RMSforward current DPAK 6A

SMB/ SMC 10

IF(AV) Averageforwardcurrent Tc= 135°Cδ= 0.5 DPAK

TL=105°Cδ = 0.5 SMB/ SMC

IFSM Surgenon repetitiveforward

current tp = 10 msSinusoidal 75 A

IRRM Peakrepetitivereverse current tp = 2 µs F = 1kHzsquare 1A

Tstg Storagetemperaturerange - 65 to + 150 °C

Tj Maximumoperatingjunctiontemperature + 150 °C

dV/dt Criticalrateof riseof reverse voltage 10000 V/µs

ABSOLUTE RATINGS (limiting values)

SMC

STPS340S

DPAK

STPS340B

IF(AV) 3A

RRM 40 V

Tj (max) 150 °C

VF(max) 0.57 V

MAINPRODUCT CHARACTERISTICS

1/7

Symbol TestsConditions Tests Conditions Min. Typ. Max. Unit

IR*Reverseleakagecurrent Tj=25°CV

RRM 20 µA

Tj = 125°CV

RRM 210mA

Forward voltagedrop Tj=25°CI

=3A 0.63 V

Tj=25°CI

=6A 0.84

Tj = 125°CI

=3A 0.52 0.57

Tj = 125°CI

=6A 0.63 0.72

STATIC ELECTRICAL CHARACTERISTICS

Pulse test : * tp = 380 µs, δ<2%

To evaluate the maximum conduction lossesuse the following equation :

P = 0.42 x IF(AV) + 0.050 IF2(RMS)

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

0.0

0.5

1.0

1.5

2.0

2.5

IF(av) (A)

PF(av)(W)

δ=tp/T tp

δ=1

δ= 0.5

δ= 0.2

δ= 0.1

δ= 0.05

Fig. 1: Average forward power dissipation versus

averageforward current.

0 25 50 75 100 125 150

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

Tamb(°C)

IF(av)(A)

Rth(j-a)=65°C/W Rth(j-a)=Rth(j-l)

(SMB/SMC)

Rth(j-a)=Rth(j-c)

(DPAK)

δ=tp/T tp

Fig. 2: Average current versus ambient

temperature(δ =0.5).

Symbol Parameter Value Unit

Rth (j-l) Junctionto leads SMC 20 °C/W

SMB 25

Rth (j-c) Junctionto case DPAK 5.5 °C/W

THERMAL RESISTANCES

STPS340U/S/B

2/7

1E-3 1E-2 1E-1 1E+0

t(s)

IM(A)

Ta=25°C

Ta=50°C

Ta=100°C

δ=0.5

Fig.3-1:Non repetitivesurgepeakforwardcurrent

versus overload duration (SMB) (Maximum

values).

1.0E-2 1.0E-1 1.0E+0 1.0E+1 1.0E+2 1.0E+3

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

tp(s)

Zth(j-a)/Rth(j-a)

Printed circuit board (e=35µm)

δ=tp/T tp

Single pulse

δ= 0.1

δ= 0.2

δ= 0.5

Fig. 4-1: Relative variation of thermal transient

impedance junction to lead versus pulse duration

(SMB).

1E-3 1E-2 1E-1 1E+0

Ta=25°C

Ta=50°C

Ta=100°C

t(s)

IM(A)

δ=0.5

Fig.3-2:Non repetitivesurgepeakforwardcurrent

versus overload duration (SMC) (Maximum

values).

1E-3 1E-2 1E-1 1E+0

Tc=25°C

Tc=50°C

Tc=100°C

t(s)

IM(A)

δ=0.5

Fig.3-3:Non repetitivesurgepeakforwardcurrent

versus overload duration (DPAK) (Maximum

values).

1.0E-2 1.0E-1 1.0E+0 1.0E+1 1.0E+2 1.0E+3

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

tp(s)

Zth(j-a)/Rth(j-a)

δ=tp/T tp

Printed circuit board (e=35µm)

Single pulse

δ= 0.1

δ= 0.2

δ= 0.5

Fig. 4-2: Relative variation of thermal transient

impedance junction to lead versus pulse duration

(SMC).

1E-3 1E-2 1E-1 1E+0

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

tp(s)

Zth(j-a)/Rth(j-a)

δ=tp/T tp

Printed circuit board (e=35µm)

Single pulse

δ= 0.1

δ= 0.2

δ= 0.5

Fig. 4-3: Relative variation of thermal transient

impedance junction to lead versus pulse

duration(DPAK).

STPS340U/S/B

3/7

12 51020 50

100

200

500

VR(V)

C(pF)

F=1MHz

Tj=25°C

Fig. 6: Junction capacitance versus reverse

voltageapplied.(Typicalvalues)

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

0.01

0.10

1.00

10.00 IFM(A)

Typicalvalues

Tj=150°C

Tj=125°C

VFM(V)

Fig. 7: Forward voltage drop versus forward

current.(Maximumvalues)

0 5 10 15 20 25 30 35 40

1E-5

1E-4

1E-3

1E-2

VR(V)

IR(A)

Tj=125°C

Tj=100°C

Tj=75°C

Tj=150°C

Fig. 5: Reverse leakage current versus reverse

voltageapplied.(Typicalvalues)

012345

100

120

S(Cu) (cm )

Rth(j-a) (°C/W)

Fig. 8-1: Thermal resistance junction to ambient

versus copper surface under tab (Epoxy printed

circuitboardFR4,copperthickness:35µm)(SMB).

012345

100 Rth(j-a) (°C/W)

S(Cu)

(cm )

Fig. 8-2: Thermal resistance junction to ambient

versus copper surface under tab (Epoxy printed

circuitboardFR4,copperthickness:35µm)(SMC).

0 2 4 6 8 10 12 14 16 18 20

100 Rth(j-a) (°C/W)

S(Cu)

(cm )

Fig. 8-3: Thermal resistance junction to ambient

versus copper surface under tab (Epoxy printed

circuitboardFR4,copperthickness:35µm)(DPAK).

STPS340U/S/B

4/7

PACKAGE MECHANICAL DATA

DPAK

REF.

DIMENSIONS

Millimeters Inches

Min. Typ. Max Min. Typ. Max.

A 2.20 2.40 0.086 0.094

A1 0.90 1.10 0.035 0.043

A2 0.03 0.23 0.001 0.009

B 0.64 0.90 0.025 0.035

B2 5.20 5.40 0.204 0.212

C 0.45 0.60 0.017 0.023

C2 0.48 0.60 0.018 0.023

D 6.00 6.20 0.236 0.244

E 6.40 6.60 0.251 0.259

G 4.40 4.60 0.173 0.181

H 9.35 10.10 0.368 0.397

L2 0.80 0.031

L4 0.60 1.00 0.023 0.039

V2 0°8°0°8°

6.7

1.61.6

2.32.3

FOOTPRINTDIMENSIONS (inmillimeters)

STPS340U/S/B

5/7

PACKAGE MECHANICAL DATA

SMB

REF.

DIMENSIONS

Millimeters Inches

Min. Max. Min. Max.

A1 1.90 2.45 0.075 0.096

A2 0.05 0.20 0.002 0.008

b 1.95 2.20 0.077 0.087

c 0.15 0.41 0.006 0.016

E 5.10 5.60 0.201 0.220

E1 4.05 4.60 0.159 0.181

D 3.30 3.95 0.130 0.156

L 0.75 1.60 0.030 0.063

1.52 2.75

2.3

1.52

FOOTPRINT DIMENSIONS(inmillimeters)

STPS340U/S/B

6/7

PACKAGE MECHANICAL DATA

SMC

REF.

DIMENSIONS

Millimeters Inches

Min. Max. Min. Max.

A1 1.90 2.45 0.075 0.096

A2 0.05 0.20 0.002 0.008

b 2.90 3.2 0.114 0.126

c 0.15 0.41 0.006 0.016

E 7.75 8.15 0.305 0.321

E1 6.60 7.15 0.260 0.281

E2 4.40 4.70 0.173 0.185

D 5.55 6.25 0.218 0.246

L 0.75 1.60 0.030 0.063

2.0 4.2 2.0

3.3

FOOTPRINTDIMENSIONS(inmillimeters)

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change withoutnotice. This publicationsupersedes and replacesall information previously supplied.

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Orderingtype Marking Package Weight Base qty Deliverymode

STPS340U U34 SMB 0.107g 2500 Tapeand reel

STPS340S S34 SMC 0.243g 2500 Tape and reel

STPS340B S340 DPAK 0.30g 75 Tube

STPS340B-TR S340 DPAK 0.30g 2500 Tapeand reel

Bandindicatescathodeon SMB,SMC

Epoxymeets UL94,V0

STPS340U/S/B

7/7