ST STPS40L40CT, STPS40L40CW User Manual

®

STPS40L40CT/CW

LOW DROP POWER SCHOTTKY RECTIFIER

MAIN PRODUCTS CHARACTERISTICS

I

F(AV)

V

RRM

2x20A

40 V

Tj (max) 150 °C

(max) 0.49 V

V

F

FEATURES AND BENEFITS

LOW FORWARD VOLTAGE DROP MEANING

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VERY SMALL CONDUCTION LOSSES
LOW DYNAMIC LOSSES AS A RESULT OF

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THE SCHOTTKY BARRIER
AVALANCHE CAPABILITY SPECIFIED

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DESCRIPTION

Dual center tap Schottky barrier rectifier designed
for highfrequencySwitchedModePowerSupplies
and DC to DC converters.

Packaged in TO-220ABand TO-247 this device is
intended for use in low voltage, high frequency
inverters, free-wheeling and polarity protection
applications.

ABSOLUTE RATINGS (limiting values, per diode)

A1

A2

A1

TO-220AB

STPS40L40CT

K

A2

K

A2

K

A1

TO-247

STPS40L40CW

Symbol Parameter Value Unit

V

RRM

I

F(RMS)

I

F(AV)

I

FSM

I

RRM

I

RSM

P

ARM

T

stg

Tj

dV/dt

dPtot

*:

Repetitive peak reverse voltage
RMS forward current
Average forward current Tc = 130°C

Surge non repetitive forward current tp = 10 ms Sinusoidal
Repetitive peak reverse current tp=2µs square F = 1kHz
Non repetitive peak reverse current tp = 100 µs square
Repetitive peak avalanche power tp = 1µs Tj = 25°C
Storage temperature range
Maximum operating junction temperature *
Critical rate of rise of reverse voltage

<

dTj Rth j a

July 2003 - Ed: 7A

Per diode

δ = 0.5

Per device

thermal runawaycondition for a diode on its own heatsink

−1()

40 V
30 A
20

40

230 A

2A
3A

8100 W

-65 to+150 °C
150 °C

10000 V/µs

A

1/5

STPS40L40CT/CW

THERMAL RESISTANCES

Symbol Parameter Value Unit

R

th (j-c)

Junction to case

Per diode

Total

R

th(c)

Coupling

When the diodes 1 and 2 areused simultaneously :

∆ Tj(diode 1) = P(diode1) x R

(Per diode) + P(diode 2) x R

th(j-c)

th(c)

STATIC ELECTRICAL CHARACTERISTICS (per diode)

Symbol Parameter Tests Conditions Min. Typ. Max. Unit

*

I

R

Reverse leakage current Tj = 25°CV

R=VRRM

Tj = 100°C

V

*

F

Forward voltage drop Tj = 25°CI

Tj = 125°CI
Tj=25°CI
Tj = 125°CI

=20A

F

=20A

F

=40A

F

=40A

F

Pulse test:*tp=380µs,δ<2%

To evaluate the conduction losses use the following equation :
P=0.28xI

Fig. 1: Average forward power dissipation versus
average forward current (per diode).

F(AV)

+ 0.0105 I

F2(RMS)

Fig. 2: Average current versus ambient
temperature (δ = 0.5, per diode).

1.5

°C/W

0.8

0.1 °C/W

0.8 mA

30 70 mA

0.53 V

0.42 0.49

0.69

0.6 0.7

PF(av)(W)

16
14
12

δ = 0.05

10

8
6
4
2
0

024681012141618202224

δ = 0.1

δ = 0.2

IF(av) (A)

δ = 0.5

δ

=tp/T

δ = 1

T

tp

Fig. 3: Normalized avalanche power derating
versus pulse duration.

P(t)

ARM p

P (1µs)

ARM

1

0.1

0.01

t (µs)

0.001

0.10.01 1

p

10 100 1000

IF(av)(A)

22
20
18
16
14
12
10

8
6
4
2
0

0 25 50 75 100 125 150

δ

=tp/T

T

tp

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

Rth(j-a)=15°C/W

Tamb(°C)

Fig. 4: Normalized avalanche power derating

versus junction temperature.

P(t)

ARM p

P (25°C)

ARM

1.2
1

0.8

0.6

0.4

0.2
0

0 25 50 75 100 125 150

T (°C)

j

2/5

STPS40L40CT/CW

Fig. 5: Non repetitive surge peak forward current

versus overload duration (maximum values, per
diode).

IM(A)

250
225
200
175
150
125
100

75

I

M

50
25

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

t

δ

=0.5

t(s)

Tc=25°C

Tc=75°C

Tc=125°C

Fig. 7: Reverse leakage current versus reverse
voltage applied (typical values, per diode).

IR(mA)

5E+2
1E+2

Tj=150°C

Tj=125°C

Fig. 6: Relative variation of thermal impedance
junction to case versus pulse duration.

Zth(j-c)/Rth(j-c)

1.0

0.8

δ = 0.5

0.6

0.4

δ = 0.2

δ

=tp/T

T

tp

δ = 0.1

0.2

Single pulse

0.0
1E-4 1E-3 1E-2 1E-1 1E+0

tp(s)

Fig. 8: Junction capacitance versus reverse

voltage applied (typical values, per diode).

C(nF)

5.0

F=1MHz
Tj=25°C

1E+1

Tj=75°C

1E+0

1E-1

1E-2

0 5 10 15 20 25 30 35 40

Tj=25°C

VR(V)

Fig. 9: Forward voltage drop versus forward

current (maximum values, per diode).

IFM(A)

200
100

Typical values

Tj=150°C

Tj=125°C

10

1

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Tj=75°C

Tj=25°C

VFM(V)

1.0

0.1

12 51020 50

VR(V)

3/5

STPS40L40CT/CW

PACKAGE MECHANICAL DATA

TO-220AB

DIMENSIONS

L2

F2

F1

F

G1

H2

Dia

G

L5

L9

L6

L4

REF.

A

C

A 4.40 4.60 0.173 0.181

Millimeters Inches

Min. Max. Min. Max.

C 1.23 1.32 0.048 0.051

L7

D 2.40 2.72 0.094 0.107
E 0.49 0.70 0.019 0.027

F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.066
F2 1.14 1.70 0.044 0.066

D

G 4.95 5.15 0.194 0.202

G1 2.40 2.70 0.094 0.106
H2 10 10.40 0.393 0.409

L2 16.4 typ. 0.645typ.
L4 13 14 0.511 0.551

M

E

L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.20 6.60 0.244 0.259
L9 3.50 3.93 0.137 0.154

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

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COOLING METHOD : C

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RECOMMENDED TORQUE VALUE : 0.55M.N

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MAXIMUM TORQUE VALUE : 0.70 M.N

4/5

PACKAGE MECHANICAL DATA

TO-247

STPS40L40CT/CW

DIMENSIONS

V

REF.

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

V

Dia.

A 4.85 5.15 0.191 0.203
D 2.20 2.60 0.086 0.102
E 0.40 0.80 0.015 0.031
F 1.00 1.40 0.039 0.055

F1 3.00 0.118

H

A

F2 2.00 0.078
F3 2.00 2.40 0.078 0.094

L5

F4 3.00 3.40 0.118 0.133

G 10.90 0.429

L

L4L2

H 15.45 15.75 0.608 0.620

L 19.85 20.15 0.781 0.793

L1 3.70 4.30 0.145 0.169

F1

V2

F(x3)

G

= =

F4

F3

F2

L3

L1

D

ME

L2 18.50 0.728
L3 14.20 14.80 0.559 0.582
L4 34.60 1.362
L5 5.50 0.216

M 2.00 3.00 0.078 0.118

V5° 5°

V2 60° 60°

Dia. 3.55 3.65 0.139 0.143

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COOLING METHOD : C

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RECOMMENDED TORQUE VALUE : 0.8M.N

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MAXIMUM TORQUE VALUE : 1.0M.N

Ordering type Marking Package Weight Base qty Delivery mode

STPS40L40CT STPS40L40CT TO-220AB 2g 50 Tube

STPS40L40CW STPS40L40CW TO-247 4.4g 30 Tube

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EPOXY MEETS UL94,V0

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