Datasheet STPS20120C Datasheet (ST)

Features

■ High junction temperature capability

■ Avalanche rated

■ Low leakage current

■ Good trade-off between leakage current and

forward voltage drop

STPS20120C

Power Schottky rectifier

Datasheet − production data

A1

K

A2

Description

Dual center tap Schottky rectifier suited for high
frequency switch mode power supply.

Packaged in TO-220AB, TO-220AB narrow leads,

2

I

PAK and TO-220FPAB, this device is intended to
be used in notebook and LCD adaptors, desktop
SMPS, providing in these applications a margin
between the remaining voltages applied on the
diode and the voltage capability of the diode.

K

A2

K

A1

TO-220AB

STPS20120CT

K

A2

A1

K

TO-220AB narrow leads

STPS20120CTN

Table 1. Device summary

I

2 x 10 A

F(AV)

V

120 V

RRM

T

j(max)

0.54 V

V

F(typ)

A2

K

A1

TO-220FPAB

STPS20120CFP

A2

K

A1

2

I

PAK

STPS20120CR

175 °C

June 2012 Doc ID 11212 Rev 3 1/10

This is information on a product in full production.

www.st.com

10

Characteristics STPS20120C

1 Characteristics

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

Symbol Parameter Value Unit

V

RRM

I

F(RMS)

I

F(AV)

I

FSM

P

ARM

T

dPtot

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

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

dTj

Repetitive peak reverse voltage 120 V

RMS forward current 30 A

Average forward current, δ = 0.5

TO-220AB, I2PAK,
TO-220AB narrow

leads

TO-220FPAB

Tc = 150 °C

Tc = 145 °C 20

T

= 125 °C

c

T

= 100 °C 20

c

Per diode
Per device

Per diode
Per device

Surge non repetitive forward current tp = 10 ms Sinusoidal 150 A

Repetitive peak avalanche power tp = 1 µs Tj = 25 °C 4600 W

Storage temperature range -65 to + 175 °C

stg

Maximum operating junction temperature

T

j

1

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

<

Rth j a–()

(1)

10

10

175 °C

Table 3. Thermal parameters

Symbol Parameter Value Unit

R

R

th(j-c)

th(c)

Junction to case

Coupling

I2PAK, TO-220AB,
TO-220AB narrow leads

TO-220FPAB

Per diode
To ta l

Per diode
To ta l

I2PAK, TO-220AB
TO-220AB narrow leads

To ta l

TO-220FPAB 3.5

3

1.8

5.5

4.5

0.6

°C/W

A

When the diodes 1 and 2 are used simultaneously:
T

(diode 1) = P(diode 1) x R

j

2/10 Doc ID 11212 Rev 3

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

th(j-c)

th(c)

STPS20120C Characteristics

Table 4. Static electrical characteristics (per diode)

Symbol Test conditions Min. Typ. Max. Unit

(1)

I

R

V

Reverse leakage current

(2)

Forward voltage drop

F

1. Pulse test: tp = 5 ms, δ < 2%

2. Pulse test: tp = 380 µs,

δ < 2%

Tj = 25 °C

VR = V

= 125 °C 1.5 5 mA

T

j

T

= 25 °C

j

= 125 °C 0.54 0.58

T

j

= 25 °C

T

j

Tj = 125 °C 0.7 0.74

T

= 25 °C

j

= 125 °C 0.81 0.86

T

j

RRM

= 2.5 A

I

F

= 10 A

I

F

IF = 20 A

10 µA

0.7

0.92

1.02

To evaluate the maximum conduction losses use the following equation:
P = 0.62 x I

Figure 1. Average forward power dissipation

versus average forward current
(per diode)

P (W)

F(AV)

10

9

8

7

6

5

4

3

2

1

0

012345678910111213

δ = 0.05

δ = 0.1

Figure 3. Normalized avalanche power

derating versus pulse duration

F(AV)

δ = 0.2

I (A)

F(AV)

+ 0.012 I

δ = 0.5

F2(RMS)

δ = 1

T

=tp/T

δ

Figure 2. Average forward current versus

ambient temperature
(

δ = 0.5, per diode)

I (A)

F(AV)

11

10

9

8

7

6

5

4

3

2

tp

1

=tp/T

δ

0

0 25 50 75 100 125 150 175

T

R =15°C/W

th(j-a)

tp

R=R

TO-220FPAB

T (°C)

amb

th(j-a) th(j-c)

TO-220AB

Figure 4. Normalized avalanche power

derating versus junction

I²PAK

temperature

P(t)

ARM p

P (1µs)

ARM

1

P (25°C)

1.2

P(t)

ARM p

ARM

V

0.01

0.001

1

0.1

t (µs)

p

0.10.01 1

10 100 1000

0.8

0.6

0.4

0.2

0

25 50 75 100 125 150

T (°C)

j

Doc ID 11212 Rev 3 3/10

Characteristics STPS20120C

Figure 5. Relative variation of thermal

impedance junction to case versus
pulse duration

Z/R

th(j-c) th(j-c)

1.0

TO-220AB,TO-220AB narrow leads, and I PAK

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

Single pulse

0.1

0.0

1.E-03 1.E-02 1.E-01 1.E+00

t (s)

p

2

T

tp

=tp/T

δ

Figure 7. Reverse leakage current versus

reverse voltage applied (typical
values, per diode)

I (mA)

R

1.E+01

T=150°C

1.E+00

1.E-01

1.E-02

1.E-03

1.E-04

1.E-05
0 10 20 30 40 50 60 70 80 90 100 110 120

j

T=125°C

j

T=100°C

j

T=75°C

j

T=50°C

j

T=25°C

j

V (V)

R

Figure 6. Relative variation of thermal

impedance junction to case versus
pulse duration (TO-220FPAB)

Z/R

th(j-c) th(j-c)

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

Single pulse

0.1

0.0

1.E-03 1.E-02 1.E-01 1.E+00 1.E+01

t (s)

p

δ

T

=tp/T

Figure 8. Junction capacitance versus

reverse voltage applied (typical
values, per diode)

C(pF)

1000

100

V (V)

10

1 10 100

R

F=1MHz

V =30mV

OSC RMS

T=25°C

j

tp

Figure 9. Forward voltage drop versus forward current (per diode)

I (A)

FM

100

T=125°C

j

(maximum values)

T=125°C

j

(typical values)

10

V (V)

1

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8

FM

4/10 Doc ID 11212 Rev 3

T=25°C

j

(maximum values)

STPS20120C Package information

2 Package information

● Epoxy meets UL94, V0

● Cooling method: by conduction (C)

● Recommended torque value: 0.4 to 0.6 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 0.051

H2

Dia

L5

L6

L2

F2

F1

F

G1

L9

L4

G

A

C

L7

D

M

E

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

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. 0.645 typ.

L4 13 14 0.511 0.551

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

Doc ID 11212 Rev 3 5/10

Package information STPS20120C

Table 6. TO-220AB narrow leads dimensions

Dimensions

L20

b1(x3)

1

E

23

e

e1

L1

b (x3)

Ref.

Millimeters Inches

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

A 4.40 4.60 0.17 0.18

b 0.61 0.88 0.024 0.034

b1 0.95 1.20 0.037 0.047

P

Q

A

F

c 0.48 0.70 0.019 0.027

D 15.25 15.75 0.60 0.62

H1

D1 1.27 0.05

D

D1

L30

L

J1

E 10.00 10.40 0.39 0.41

e 2.40 2.70 0.094 0.106

e1 4.95 5.15 0.19 0.20

F 1.23 1.32 0.048 0.052

C

H1 6.20 6.60 0.24 0.26

J1 2.40 2.72 0.095 0.107

L 13.00 14.00 0.51 0.55

L1 2.60 2.90 0.102 0.114

L20 15.40 0.61

L30 28.90 1.14

∅P 3.75 3.85 0.147 0.151

Q 2.65 2.95 0.104 0.116

6/10 Doc ID 11212 Rev 3

STPS20120C Package information

Devices in I2PAK with nickel-plated back frame must NOT be mounted by frame soldering
like SMDs. Such devices are intended to be through-hole mounted ONLY and in no
circumstances shall ST be held liable for any lack of performance or damage arising out of
soldering of nickel-plated back frames.

Table 7. I2PAK dimensions

Dimensions

L2

Ref.

A

E

c2

D

A 4.40 4.60 0.173 0.181

A1 2.40 2.72 0.094 0.107

b 0.61 0.88 0.024 0.035

b1 1.14 1.70 0.044 0.067

c 0.49 0.70 0.019 0.028

c2 1.23 1.32 0.048 0.052

D 8.95 9.35 0.352 0.368

Millimeters Inches

Min. Max. Min. Max.

L1

A1

b2

L

b1

b

c

e

e 2.40 2.70 0.094 0.106

e1 4.95 5.15 0.195 0.203

E 10 10.40 0.394 0.409

L 13 14 0.512 0.551

L1 3.50 3.93 0.138 0.155

L2 1.27 1.40 0.050 0.055

Doc ID 11212 Rev 3 7/10

Package information STPS20120C

Table 8. TO-220FPAB dimensions

Dimensions

Ref.

Millimeters Inches

Min. Max. Min. Max.

A 4.4 4.6 0.173 0.181

A

H

B

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.018 0.027

Dia

L6

L2

L3

L5

F1

L4

F2

F

G1

G

D

L7

E

F 0.75 1 0.030 0.039

F1 1.15 1.70 0.045 0.067

F2 1.15 1.70 0.045 0.067

G 4.95 5.20 0.195 0.205

G1 2.4 2.7 0.094 0.106

H 10 10.4 0.393 0.409

L2 16 Typ. 0.63 Typ.

L3 28.6 30.6 1.126 1.205

L4 9.8 10.6 0.386 0.417

L5 2.9 3.6 0.114 0.142

L6 15.9 16.4 0.626 0.646

L7 9.00 9.30 0.354 0.366

Dia. 3.00 3.20 0.118 0.126

8/10 Doc ID 11212 Rev 3

STPS20120C Ordering information

3 Ordering information

Table 9. Ordering information

Ordering type Marking Package Weight Base qty Delivery mode

STPS20120CT STPS20120CT TO-220AB 2.23 g 50 Tube

STPS20120CR STPS20120CR I2PAK 1.49 g 50 Tube

STPS20120CFP STPS20120CFP TO-220FPAB 2.0 g 50 Tube

STPS20120CTN STPS20120CTN

TO-220AB

narrow leads

1.9 g 50 Tube

4 Revision history

Table 10. Document revision history

Date Revision Changes

18-Feb-2005 1 First issue

03-May-2007 2 Reformatted to current standards. Added TO-220FPAB package.

15-Jun-2012 3 Added TO-220 narrow leads package.

Doc ID 11212 Rev 3 9/10

STPS20120C

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10/10 Doc ID 11212 Rev 3