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STPS40M120CR

P1-P3P4-P6P7-P9
This is information on a product in full production.
April 2012 Doc ID 022916 Rev 1 1/9
9
STPS40M120C
Power Schottky rectifier
Datasheet − production data
Features
■ High current capability
■ Avalanche rated
■ Low forward voltage drop
■ High frequency operation
Description
This Schottky diode is suited for high frequency
switch mode power supply.
Packaged in TO-220AB, TO-220AB narrow leads
and I
2
PAK, this device is intended to be used in
notebook, game station and desktop adapters,
providing in these applications a good efficiency
at both low and high load.
Figure 1. Electrical characteristics
(a)
a. V
ARM
and I
ARM
must respect the reverse safe
operating area defined in Figure 9. V
AR
and I
AR
are
pulse measurements (t
p
< 10 µs). V
R
, I
R
, V
RRM
and
V
F
, are static characteristics
I
F
2 x I
O
I
O
I
R
I
AR
V
F(I
o
)
V
To
V
F(2xI
o
)
V
F
V
I
I
V
V
R
V
RRM
"Reverse"
"Forward"
V
AR
X
X
Table 1. Device summary
Symbol Value
I
F(AV)
2 x 20 A
V
RRM
120 V
T
j
(max) 150 °C
V
F
(typ) 0.44 V
A1
K
A2
I
2
PAK
STPS40M120CR
TO-220AB narrow leads
STPS40M120CTN
A1
A2
K
K
TO-220AB
STPS40M120CT
A1
A2
K
K
K
A1
K
A2
www.st.com
Characteristics STPS40M120C
2/9 Doc ID 022916 Rev 1
1 Characteristics
When the two diodes 1 and 2 are used simultaneously:
ΔT
j
(diode 1) = P(diode 1) x R
th(j-c)
(Per diode) + P(diode 2) x R
th(c)
Table 2. Absolute ratings (limiting values per diode at T
amb
= 25 °C, unless
otherwise specified)
Symbol Parameter Value Unit
V
RRM
Repetitive peak reverse voltage 120 V
I
F(RMS)
Forward rms current 30 A
I
F(AV)
Average forward current, δ = 0.5
Per diode T
c
= 130 °C 20
A
Per device T
c
= 120 °C 40
I
FSM
Surge non repetitive forward current t
p
= 10 ms sinusoidal 220 A
P
ARM
(1)
1. For pulse time duration deratings, please refer to Figure 4. More details regarding the avalanche energy
measurements and diode validation in the avalanche are provided in the STMicroelectronics Application
notes AN1768, “Admissible avalanche power of schottky diodes” and AN2025, “Converter improvement
using Schottky rectifier avalanche specification”.
Repetitive peak avalanche power T
j
= 125 °C, t
p
= 10 µs 1600 W
V
ARM
(2)
2. See Figure 9
Maximum repetitive peak
avalanche voltage
t
p
< 10 µs, T
j
< 125 °C, I
AR
< 10.7 A 150 V
V
ASM
(2)
Maximum single-pulse
peak avalanche voltage
t
p
< 10 µs, T
j
< 125 °C, I
AR
< 10.7 A 150 V
T
stg
Storage temperature range -65 to +175 °C
T
j
Maximum operating junction temperature
(3)
3. condition to avoid thermal runaway for a diode on its own heatsink
150 °C
Table 3. Thermal resistance
Symbol Parameter Value Unit
R
th(j-c)
Junction to case
Per diode 1.10
°C/WTot al 0 .80
R
th(c)
Coupling 0.50
dPtot
dTj
<
1
Rth(j-a)
STPS40M120C Characteristics
Doc ID 022916 Rev 1 3/9
To evaluate the conduction losses use the following equation:
P = 0.54 x I
F(AV)
+ 0.0065 x I
F
2
(RMS)
Table 4. Static electrical characteristics (per diode)
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
R
(1)
Reverse leakage current
T
j
= 25 °C
V
R
= V
RRM
- 75 370 µA
T
j
= 125 °C - 25 70 mA
V
F
(2)
Forward voltage drop
T
j
= 125 °C I
F
= 5 A - 0.44 0.49
V
T
j
= 125 °C
I
F
= 10 A
- 0.52 0.57
T
j
= 25 °C
I
F
= 20 A
-0.79
T
j
= 125 °C - 0.61 0.67
1. Pulse test: t
p
= 5 ms, δ < 2%
2. Pulse test: t
p
= 380 µs, δ < 2%
Figure 2. Average forward power dissipation
versus average forward current (per
diode)
Figure 3. Average forward current versus
ambient temperature (δ = 0.5, per
diode)
0
4
8
12
16
20
0 4 8 1216202428
P (W)
F(AV)
δ = 1
δ = 0.5
δ = 0.2
δ = 0.1
δ = 0.05
T
δ = t / T
p
t
p
I (A)
F(AV)
0
4
8
12
16
20
24
0 25 50 75 100 125 150
I (A)
F(AV)
R
th(j-a)
= R
th(j-c)
T (°C)
amb
Figure 4. Normalized avalanche power
derating versus pulse duration
Figure 5. Relative variation of thermal
impedance junction to case versus
pulse duration
P(t
p
)
P (10 µs)
ARM
ARM
0.001
0.01
0.1
1
1 10 100 1000
t (µs)
p
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
Z/R
th(j-c) th(j-c)
Single pulse
t (s)
p
P1-P3P4-P6P7-P9

STPS40M120CR

Mfr. #:
Buy STPS40M120CR
Manufacturer:
STMicroelectronics
Description:
Schottky Diodes & Rectifiers 40A IF 120V VRRM 0.44V VF Schottky
Lifecycle:
New from this manufacturer.
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