Datasheet STPS140Z Datasheet (SGS Thomson Microelectronics)



MAINPRODUCTCHARACTERISTICS

STPS140Z

POWER SCHOTTKY RECTIFIER

I

F

V

RRM

V

(max) 0.49 V

F

1A

40 V

Tj (max) 150°C

FEATURESAND BENEFITS

VERYSMALL CONDUCTION LOSSES
NEGLIGIBLESWITCHING LOSSES
EXTREMELYFASTSWITCHING

DESCRIPTION

Single Schottky rectifier suited for Switchmode
PowerSuppliesand highfrequencyDCto DC con­verters.

Packaged in SOD123, this device is intended for
use in low voltage, high frequency inverters, free
wheelingand polarity protection applications.Due
tothesmallsizeofthe packagethis devicefit GSM
andPCMCIA requirements.

ABSOLUTE RATINGS(limitingvalues)

SOD123

Symbol Parameter Value Unit

V

RRM

I

I

FSM

Repetitivepeak reversevoltage 40 V
Continuousforwardcurrent

F

T

=60°C1A

amb

Surgenon repetitiveforwardcurrent tp = 10 ms

5.5 A

Sinusoidal

I

RRM

Repetitivepeak reversecurrent tp = 2 µs square

0.5 A

F = 1kHz

I

RSM

T

stg

Nonrepetitive peak reversecurrent tp = 100µs square 1 A
Storagetemperaturerange - 65 to + 150 °C

Tj Maximumoperatingjunction temperature* 150

T

Maximumtemperaturefor solderingduring 10s 260 °C

L

dV/dt Criticalrate of riseof reverse voltage 10000 V/µs

dPtot

*

dTj

May 1999 - Ed:1

<

Rth(j−a

1

Thermal runawaycondition fora diode onits own heatsink.

)

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STPS140Z

THERMALRESISTANCES

Symbol Parameter Value Unit

R

th (j-a)

* with 50 mm2copper area (e=35µm)

Junctionto ambient* 175 °C/W

STATICELECTRICALCHARACTERISTICS

Symbol Tests Conditions TestsConditions Min. Typ. Max. Unit

* Reverse leakage current Tj = 25°CV

I

R

Tj = 25°CV

=5V 10 µA

R

=40V 40 µA

R

Tj = 100°C 1.5 5 mA

** Forwardvoltagedrop Tj = 25°CI

V

F

= 1 A 0.55 V

F

Tj = 100°C 0.45 0.51

Pulse test : * tp = 5 ms, δ <2%

** tp = 380µs, δ <2%

To evaluatethe maximum conductionlossesuse thefollowing equation:
P = 0.2 x I

F(AV)

+ 0.3 x I

F2(RMS)

atTj = 150°C

Fig. 1: Average forward power dissipationversus
averageforwardcurrent.

PF(av)(W)

0.6

0.5

0.4

0.3

0.2

0.1

0.0

δ = 0.05

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1

2/5

δ = 0.1

δ = 0.2

IF(av)(A)

δ= 0.5

δ

=tp/T

δ =1

T

tp

Fig. 2: Average forward current versus ambient
temperature(δ=1).

IF(av)(A)

1.2

1.0

0.8

0.6

0.4

0.2

0.0
0 25 50 75 100 125 150

δ

=tp/T

T

tp

Tamb(°C)

STPS140Z

Fig. 3:

Non repetive surge peak forward current

versusover l oaddur ati on(maxim umvalues) .

IM(A)

5

4

3

2

IM

1

0

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

Fig. 5:

δ=0.5

t

t(s)

Reverse leakage current versus reverse

Ta=25°C

Ta=60°C

voltageapplied (typicalvalue).

IR(mA)

5E+1
1E+1

1E+0

1E-1
1E-2
1E-3
1E-4

0 5 10 15 20 25 30 35 40

Tj=150°C

Tj=100°C

Tj=70°C

Tj=25°C

VR(V)

Fig.4:

Relativevariationofthermalimpedancejunction
to ambientversus pulse duration (epoxy printedcircuit
boardFR4withrecommendedpadlayout).

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

1E+0

δ= 0.5

δ = 0.2

δ= 0.1

1E-1

T

Single pulse

1E-2

tp(s)

1E-2 1E-1 1E+0 1E+1 5E+1

Fig. 6:

Reverse leakage current versus junction

δ

=tp/T

tp

temperature(typicalvalue).

IR[Tj] / IR[Tj=25°C]

5E+3
1E+3

1E+2

1E+1

1E+0

1E-1

VR=40V

Tj(°C)

0 25 50 75 100 125 150

Fig. 7: Junction capacitance versus reverse
voltageapplied (typicalvalue).

C(pF)

200

100

50

20

VR(V)

10

12 51020 50

F=1MHz

Tj=25°C

3/5

STPS140Z

Fig. 8-1:

Forward voltage drop versus forward

current(high level, maximumvalues).

IFM(A)

5E+0

1E+0

1E-1

Tj=150°C

Tj=25°C

Tj=100°C

VFM(V)

1E-2

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2

Fig. 9:

Thermal resistance junction to ambient
versuscoppe r surface(epoxy printed circuit board
FR4,copper thickness:35µm).

Fig. 8-2:

Forward voltage drop versus forward

current(low level,maximum values).

IFM(A)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

Tj=150°C

0.4

0.2

0.0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

VFM(V)

Tj=25°C

Tj=100°C

Rth(j-a) (°C/W)

300
280
260
240
220
200
180
160
140
120
100

0 102030405060708090100

S(Cu) (mm )

IF=1A

4/5

PACKAGEMECHANICAL DATA

SOD123Plastic

H

b

E

D

c

G

A2

STPS140Z

DIMENSIONS

REF.

A1

A 1.45 0.057
A1 0 0.1 0 0.004
A2 0.85 1.35 0.033 0.053

A

b 0.55 Typ. 0.022 Typ.

c 0.15 Typ. 0.039 Typ.

D 2.55 2.85 0.1 0.112

E 1.4 1.7 0.055 0.067

G 0.25 0.01
H 3.55 3.95 0.14 0.156

Millimeters Inches

Min. Max. Min. Max.

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change without notice.This publication supersedes and replaces all information previously supplied.
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