ST STPS40L15C User Manual

Low drop OR-ing power Schottky diode

Features

■ Very low forward voltage drop for less power

dissipation and reduced heatsink size

■ Reverse voltage suited to OR-ing of 3 V, 5 V

and 12 V rails

■ Avalanche capability specified

Description

Dual center tap schottky rectifier packaged in
TO-220AB and TO-247, this device is especially
intended for use as OR-ing diode in fault tolerant
power supply equipments.

K

TO-220AB

STPS40L15CT

STPS40L15C

A1

K

A2

A2

K

A1

TO-247

STPS40L15CW

A2

K

A1

Table 1. Device summary

Symbol Value

I

2x20 A

F(AV)

V

15 V

RRM

T

125 °C

j (max)

V

F (max)

0.33 V

July 2011 Doc ID 4926 Rev 6 1/8

www.st.com

8

Characteristics STPS40L15C

1 Characteristics

Table 2. Absolute ratings (limiting values, per diode)

Symbol Parameter Value Unit

V

Repetitive peak reverse voltage 15 V

RRM

I

F(RMS)

I

F(AV)

I

I

I

P

T

dV/dt Critical rate of rise of reverse voltage 10000 V/µs

1. condition to avoid thermal runaway for a diode on its own heatsink

Table 3. Thermal resistances

Forward current rms 30 A

T

= 140 °C

Average forward current

Surge non repetitive forward

FSM

current

Peak repetitive reverse current tp = 2 µs, F= 1 kHz 2 A

RRM

Non repetitive peak reverse current tp = 100 µs 3 A

RSM

Repetitive peak avalanche power tp = 1µs, Tj = 25 °C 13140 W

ARM

Storage temperature range -65 to + 150 °C

stg

Maximum operating junction temperature

T

j

dPtot

--------------­dTj

1

--------------------------

<

Rth j a–()

case

δ = 1

= 10 m, Sinusoidal 310 A

t

p

(1)

Tot al 4 0

Per diode 20

125 °C

A

Symbol Parameter Value Unit

Per diode 1.6

R

Junction to case

th(j-c)

R

th (c)

Table 4. Static electrical characteristics (Per diode)

Coupling 0.1 °C/W

Total 0.85

°C/W

Symbol Parameter Tests conditions Min. Typ. Max. Unit

R

V

F

1. Pulse test : tp = 380 µs, δ < 2%

current

(1)

Forward voltage drop

Reverse leakage

(1)

I

= 25 °C

j

= 100 °C 200 500

T

j

= 25 °C IF = 19 A 0.41

T

j

T

= 25 °C IF = 40 A 0.52

j

= 125 °C IF = 19 A 0.28 0.33

T

j

T

= 125 °C IF = 40 A 0.42 0.50

j

= V

V

R

RRM

6

mA

V

T

To evaluate the conduction losses use the following equation :
P = 0.18 x I

F(AV)

+ 0.008 I

F2(RMS)

2/8 Doc ID 4926 Rev 6

STPS40L15C Characteristics

Figure 1. Average forward power dissipation

versus average forward current
(per diode)

PF(av)(W)

8

7

δ = 0.05

6

δ = 0.1

δ = 0.2

δ = 0.5

δ = 1

5

4

3

δ

=tp/T

T

tp

2

1

0

0 2 4 6 8 10121416182022

IF(av) (A)

Figure 3. Normalized avalanche power

derating versus pulse duration

P(tp)

ARM

P (1µs)

ARM

1

Figure 2. Average forward current versus

ambient temperature
( δ

= 1, per diode)

IF(av)(A)

22
20

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

18
16
14
12

Rth(j-a)=15°C/W

10

8
6

T

4

tp

=tp/T

δ

2
0

0 25 50 75 100 125 150

Tamb(°C)

Figure 4. Normalized avalanche power

derating versus junction
temperature

P(T)

ARM j

P (25 °C)

ARM

1.2

1

0.1

0.01

t (µs)

0.001

0.10.01 1

10 100

p

1000

Figure 5. Non repetitive surge peak forward

current versus overload duration
(maximum values per diode)

IM(A)

250

200

150

100

IM

50

0

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

δ=0.5

t

t(s)

Tc=50°C

Tc=75°C

Tc=110°C

0.8

0.6

0.4

0.2

0

25 50 75 100 125

T (°C)

Figure 6. Relative variation of thermal

impedance junction to case versus
pulse duration (per diode)

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

1.0

0.8

δ = 0.5

0.6

0.4

δ = 0.2

δ = 0.1

0.2

0.0

1.0E-4 1.0E-3 1.0E-2 1.0E-1 1.0E+0

Single pulse

tp (s)

δ

=tp/T

T

tp

j

150

Doc ID 4926 Rev 6 3/8

Characteristics STPS40L15C

Figure 7. Reverse leakage current versus

reverse voltage applied (typical
values per diode)

IR(mA)

5E+2

1E+2

Tj=100°C

1E+1

1E+0

1E-1

0246810121416

Tj=25°C

VR(V)

Figure 9. Forward voltage drop versus

forward current (typical values per
diode)

IFM(A)

200.0

100.0

Tj=150°C

Figure 8. Junction capacitance versus

reverse voltage applied (typical
values per diode)

C(nF)

5.0

F=1MHz
Tj=25°C

1.0

VR(V)

0.1
12 51020

Figure 10. Forward voltage drop versus

forward current (typical maximum
per diode)

IFM(A)

200

Tj=100°C

100

10.0

Tj=25°C

Tj=125°C

Tj=75°C

1.0

VFM(V)

0.1

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

10

1

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8

VFM(V)

4/8 Doc ID 4926 Rev 6

STPS40L15C Package information

2 Package information

● Epoxy meets UL94,V0

● Cooling method: by conduction (C)

● Recommended torque values for: TO-220AB 0.4 to 0.6 N·m

● Recommended torque values for: TO-247 0.9 to 1.2 N·m

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com
ECOPACK

Table 5. TO-220AB dimensions

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

.

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.40 4.60 0.173 0.181

C 1.23 1.32 0.048 0.106

H2

Dia

A

C

L5

D 2.40 2.72 0.094 0.009

E 0.49 0.70 0.019 0.037

F 0.61 0.88 0.024 0.067

L7

F1 1.14 1.70 0.044 0.024

L6

L2

F2

F1

F

G1

L9

L4

G

D

M

E

F2 1.14 1.70 0.044 0.054

G 4.95 5.15 0.194 0.368

G1 2.40 2.70 0.094 0.409

H2 10 10.40 0.393 0.208

L2 16.4 typ 0.645 typ

L4 13 14 0.511 0.055

L5 2.65 2.95 0.104 0.069

L6 15.25 15.75 0.600 0.126

L7 6.20 6.60 0.244

L9 3.50 3.93 0.137

M 2.6 typ. 0.102 typ.

Diam. 3.75 3.85 0.147 0.151

Doc ID 4926 Rev 6 5/8

Package information STPS40L15C

Table 6. TO-247 dimensions

Dimensions

Ref.

Millimeters Inches

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

A 4.85 5.15 0.191 0.203

D 2.20 2.60 0.086 0.031

V

E 0.40 0.80 0.015 0.009

V

Dia.

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

F2

F1

V2

F(x3)

G

= =

L1

F3

L3

F4

D

L1 3.70 4.30 0.145 0.169

L2 18.50 0.728

L3 14.20 14.80 0.559 0.582

ME

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

6/8 Doc ID 4926 Rev 6

STPS40L15C Ordering information

3 Ordering information

Table 7. Ordering information

Order code Marking Package Weight Base qty Delivery mode

STPS40L15CW STPS40L15CW TO-247 4.4 g 30 Tube

STPS40L15CT STPS40L15CT TO-220AB 2.2 g 50 Tube

4 Revision history

Table 8. Document revision history

Date Revision Changes

July-2003 5A Previous edition.

18-Jul-2011 6 Added cathode indicator K to illustration for TO-220AB.

Doc ID 4926 Rev 6 7/8

STPS40L15C

Please Read Carefully:

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.

All ST products are sold pursuant to ST’s terms and conditions of sale.

Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.

UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.

UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.

Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.

ST and the ST logo are trademarks or registered trademarks of ST in various countries.

Information in this document supersedes and replaces all information previously supplied.

The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.

© 2011 STMicroelectronics - All rights reserved

STMicroelectronics group of companies

Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -

Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America

www.st.com

8/8 Doc ID 4926 Rev 6