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SCHOTTKY RECTIFIER
Bulletin PD-20803 11/05
40CPQ080G
40CPQ100G
40 Amp
IF(AV) = 40Amp
VR = 80 - 100V
Major Ratings and Characteristics
Characteristics
Values Units
IF(AV) Rectangular
waveform
VRRM
IFSM @ tp = 5 µs sine
VF @20 Apk, TJ=125°C
(per leg)
TJ
40
80 - 100
2950
0.61
- 55 to 175
A
V
A
V
°C
Description/ Features
The 40CPQ...G center tap Schottky rectifier has been opti-
mized for low reverse leakage at high temperature. The
proprietary barrier technology allows for reliable operation up
to 175° C junction temperature. Typical applications are in
switching power supplies, converters, free-wheeling diodes,
and reverse battery protection.
175° C TJ operation
Center tap TO-247 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Case Styles
40CPQ...G
Base
Common
Cathode
2
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TO-247AC
1
Anode
1
2
Common
Cathode
3
Anode
2
1

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40CPQ080G, 40CPQ100G
Bulletin PD-20803 11/05
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
40CPQ080G
80
40CPQ100G
100
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive
SurgeCurrent (Per Leg) *SeeFig.7
EAS Non-RepetitiveAvalancheEnergy
(Per Leg)
IAR
Repetitive Avalanche Current
(Per Leg)
40CPQ Units
Conditions
40 A 50% duty cycle @ TC = 145°C, rectangular wave form
2950
300
11.25
5µs Sine or 3µs Rect. pulse Following any rated
A load condition and with
10msSineor6msRect.pulse rated VRRM applied
mJ TJ = 25 °C, IAS = 2 Amps, L = 5.6 mH
0.75 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
40CPQ Units
Conditions
VFM Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
IRM Max. Reverse Leakage Current
(Per Leg) * See Fig. 2 (1)
CT Max. Junction Capacitance (Per Leg)
LS Typical Series Inductance (Per Leg)
dv/dt Max. Voltage Rate of Change
(Rated VR)
0.77
0.91
0.61
0.75
0.27
15
600
7.5
10000
Thermal-Mechanical Specifications
V @ 20A
V @ 40A
V @ 20A
V @ 40A
TJ = 25 °C
TJ = 125 °C
mA TJ = 25 °C
mA TJ = 125 °C
VR = rated VR
pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
nH Measured lead to lead 5mm from package body
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
Parameters
40CPQ Units
Conditions
TJ Max. Junction Temperature Range
Tstg Max. Storage Temperature Range
RthJC Max. Thermal Resistance Junction
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction
to Case (Per Package)
RthCS Typical Thermal Resistance, Case
to Heatsink
wt ApproximateWeight
T MountingTorque
Min.
Max.
Case Style
DeviceMarking
-55 to 175
-55 to 175
1.25
°C
°C
°C/W DCoperation
* See Fig. 4
0.63 °C/W DCoperation
0.24 °C/W Mounting surface , smooth and greased
6 (0.21) g (oz.)
6 (5) Kg-cm Non-lubricatedthreads
12 (10) (Ibf-in)
TO-247AC(TO-3P) JEDEC
40CPQ100G
2 www.irf.com

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1000
100
10
1
TJ=175°C
TJ=125°C
TJ= 25°C
40CPQ080G, 40CPQ100G
Bulletin PD-20803 11/05
1000
100
10
1
TJ=175°C
150°C
125°C
100°C
.1 75°C
50°C
.01
25°C
.001
0
20 40 60 80 100
ReverseVoltage-VR(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
1000
TJ=25°C
.1
0 .4 .8 1.2 1.6 2
ForwardVoltageDrop- VFM(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
100
0
20 40 60 80 100
ReverseVoltage- VR(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1 D=0.50
D=0.33
D=0.25
D=0.17
.1 D=0.08
.01
.001
.00001
SinglePulse
(Thermal Resistance)
.0001
.001
.01
PDM
t1
t2
Notes:
1. DutyfactorD= t / t
12
2. PeakTJ=PDMxZthJC+TC
.1 1 10 100
t1, RectangularPulseDuration(Seconds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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3