Bulletin PD-20789 rev. A 11/06
40CPQ035PbF
40CPQ040PbF
40CPQ045PbF
SCHOTTKY RECTIFIER
40 Amp
I
F(AV)
= 40Amp
V
R
= 35/ 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5
μs
sine
V
F
T
J
@ 20 Apk, T
J
=125°C
(per leg)
Description/ Features
Units
A
V
A
V
The 40CPQ...PbF center tap Schottky rectifier has been
optimized for very low forward voltage drop, with moderate
leakage. The proprietary barrier technology allows for reliable
operation up to 150° C junction temperature. Typical applica-
tions are in switching power supplies, converters, free-wheeling
diodes, and reverse battery protection.
150° C T
J
operation
Center tap TO-247 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
Values
40
35/ 45
3500
0.43
- 55 to 150
°C
Case Styles
Base
Common
Cathode
2
1
3
2
Anode
1
Anode
2
Common
Cathode
TO-247AC
Document Number: 94208
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40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 rev. A 11/06
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
35
40
45
V
RWM
Max. Working Peak Reverse Voltage (V)
40CPQ035PbF 40CPQ040PbF 40CPQ045PbF
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
3500
430
27
4
A
mJ
A
5μs Sine or 3μs Rect. pulse
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
40CPQ... Units
40
A
Conditions
50% duty cycle @ T
C
= 120 °C, rectangular wave form
T
J
= 25 °C, I
AS
= 4 Amps, L = 3.4 mH
Current decaying linearly to zero in 1
μsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
40CPQ... Units
0.49
0.59
0.43
0.56
4
150
1850
7.5
10000
V
V
V
V
mA
mA
pF
nH
@ 20A
@ 40A
@ 20A
@ 40A
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
T
J
= 25 °C
T
J
= 125 °C
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
(1) Pulse Width < 300μs, Duty Cycle <2%
dv/dt Max. Voltage Rate of Change
V/
μs
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
40CPQ... Units
-55 to 150
-55 to 150
1.25
0.63
0.24
6 (0.21)
Min.
Max.
6 (5)
12 (10)
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
T
Approximate Weight
Mounting Torque
Case Style
Device Marking
°C/W DC operation
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
Non-lubricated threads
(Ibf-in)
TO-247AC(TO-3P) JEDEC
40CPQ035
40CPQ040
40CPQ045
Document Number: 94208
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2
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 rev. A 11/06
10
00
10
00
10
0
1
0
1
.1
.0
1
.0 1
0
0
T =1 0 C
5°
J
1 5C
2°
1 0C
0°
7°
5C
5°
0C
2°
5C
10
0
In ta ta e u F rw rdC rre t - I (A
s n nos o a
u n
)
F
R v rs C rr n - I (m )
ee e u et
A
R
5
1 1 2 2 3 3 4 4
0 5 0 5 0 5 0 5
R v rs V lta e- V (V
ee e o g
R )
1
0
T =1 0 C
5°
J
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
100
00
J n tio C p c n e- C (p )
u c n a a ita c
F
T
T =1 5 C
2°
J
T= 2°
5C
J
1
T =2 °
5C
J
10
00
.1
0
.2
.4
.6
.8
1
1
.2
1
.4
10
0
0
1
0
2
0
3
0
4
0
5
0
F r a V lta eD p- V (V
o w rd o g ro
)
F
M
R v rs V lta e- V (V
ee e o g
R )
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
0
T e m l Im e a c - Zth C (° /W
hr a p d ne
C )
J
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
.1
D=0 0
.5
D=0 3
.3
D=0 5
.2
D=0 7
.1
D=0 8
.0
P
M
D
t
1
t2
N te :
o s
1 D tyfa to D= t1/ t2
. u
c r
.0
1
S g P ls
in le u e
(T e a R s ta c )
h rm l e is n e
.0 1
0
.0 0 1
00
.0 0
01
.0 1
0
.0
1
.1
2 P a T =P xZ
. ek
+T
J D
M th C C
J
1
1
0
10
0
t , R c n u r P ls D ra n(S c n s
e ta g la u e u tio
eod)
1
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94208
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40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 rev. A 11/06
15
5
A w b C s T m e tu - (° )
llo a le a e e p ra re C
R J (D ) =1 5 C
.2 ° /W
th C C
1
4
D=0 8
.0
D=0 7
.1
1
2
D=0 5
.2
D=0 3
.3
1
0
D=0 0
.5
8
6
4
2
0
0
R SL it
M im
D
C
10
5
15
4
10
4
D
C
15
3
10
3
0
A e g P w r L s - (W tts
v ra e o e o s
a )
5
1
0
1
5
2
0
2
5
3
0
5
1
0
1
5
2
0
2
5
3
0
A e g F rw rdC rre t - IF V (A
v ra e o a
u n
(A ) )
A e g F rw rdC rre t - I
v ra e o a
u n
(A
)
F V
(A )
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
10000
FSM
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Non-Repetitive Surge Current - I
(A)
1000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P460
F
R = 25 ohm
g
Vd = 25 Volt
CURR
ENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
Document Number: 94208
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4
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 rev. A 11/06
Outline Table
Conform to JEDEC outline TO-247AC (TO-3P)
Dimensions in millimeters and (inches)
Marking Information
EXAMPLE: THIS IS A 40CPQ045
WITH ASSEMBLY
LOT CODE 5657
ASSEMBLED ON WW 35, 2000
IN ASSEMBLY LINE "H"
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
40CPQ045
P035H
56
57
DATE CODE
P = LEAD-FREE
YEAR 0 = 2000
WEEK 35
LINE H
Document Number: 94208
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