SCHOTTKY RECTIFIER
40 Amp
40CPQ050
40CPQ060
PD-2.308 rev. A 12/97
1
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Dimensions in millimeters and inches
Conforms to JEDEC Outline TO-247AC (TO-3P)
CASE STYLE AND DIMENSIONS
I
F(AV)
Rectangular
40
A
waveform
V
RRM
50/60
V
I
FSM
@ tp = 5 s sine
3200
A
V
F
@
20 Apk, T
J
=125C
0.49
V
(per leg)
T
J
- 55 to 150
C
Characteristics
40CPQ...
Units
Major Ratings and Characteristics
Description/Features
The 40CPQ... 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 applications 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
40CPQ050, 40CPQ060
PD-2.308 rev. A 12/97
2
www.irf.com
Part number
40CPQ050
40CPQ060
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
50
60
T
J
Max. Junction Temperature Range
-55 to 150
C
T
stg
Max. Storage Temperature Range
-55 to 150
C
R
thJC
Max. Thermal Resistance Junction
1.25
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.63
C/W DC operation
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
0.24
C/W Mounting surface , smooth and greased
to Heatsink
wt
Approximate Weight
6 (0.21)
g (oz.)
T
Mounting Torque
Min.
6 (5)
Non-lubricated threads
Max.
12 (10)
Case Style
TO-247AC(TO-3P) JEDEC
Kg-cm
(Ibf-in)
Following any rated
load condition and with
rated V
RRM
applied
A
V
FM
Max. Forward Voltage Drop
0.53
V
@ 20A
(Per Leg) * See Fig. 1
(1)
0.68
V
@ 40A
0.49
V
@ 20A
0.64
V
@ 40A
I
RM
Max. Reverse Leakage Current
1.7
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
96
mA
T
J
= 125 C
C
T
Max. Junction Capacitance (Per Leg)
1600
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25C
L
S
Typical Series Inductance (Per Leg)
7.5
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
10,000
V/ s
(Rated V
R
)
T
J
= 25 C
T
J
= 125 C
V
R
= rated V
R
(1) Pulse Width < 300s, Duty Cycle <2%
Voltage Ratings
Electrical Specifications
I
F(AV)
Max. Average Forward Current
40
A
50% duty cycle @ T
C
= 120 C, rectangular wave form
* See Fig. 5
I
FSM
Max. Peak One Cycle Non-Repetitive
3200
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
320
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
18
mJ
T
J
= 25 C, I
AS
= 2 Amps, L = 9.0 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
2
A
Current decaying linearly to zero in 1 sec
(Per Leg)
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Parameters
40CPQ... Units
Conditions
Parameters
40CPQ... Units
Conditions
Parameters
40CPQ... Units
Conditions
Absolute Maximum Ratings
Thermal-Mechanical Specifications
40CPQ050, 40CPQ060
PD-2.308 rev. A 12/97
3
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
.1
1
10
100
1000
0
.2
.4
.6
.8
1
1.2
1.4
1.6
FM
F
I
n
s
t
an
t
a
ne
o
u
s
F
o
r
w
ar
d
C
u
r
r
en
t
-
I
(
A
)
Forward Voltage Drop - V (V)
T = 150C
T = 125C
T = 25C
J
J
J
.01
.1
1
10
100
1000
0
10
20
30
40
50
60
R
R
125C
100C
75C
50C
25C
Reverse Voltage - V (V)
Re
v
e
r
s
e
C
ur
r
e
nt
-
I
(
m
A)
T = 150C
J
100
1000
10000
0 5 10 15 2025 30 35 4045 50 55 6065
T = 25C
J
Reverse Voltage - V (V)
R
T
J
u
nc
t
i
on
C
apa
c
i
t
a
nc
e
-
C
(
p
F
)
.001
.01
.1
1
10
.00001
.0001
.001
.01
.1
1
10
100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
th
J
C
t , Rectangular Pulse Duration (Seconds)
Th
e
r
m
al
I
m
pe
da
nc
e
-
Z
(
C
/
W
)
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
J
DM
thJC
C
2
40CPQ050, 40CPQ060
PD-2.308 rev. A 12/97
4
www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
0
2
4
6
8
10
12
14
16
0
5
10
15
20
25
30
DC
A
v
er
ag
e P
o
w
er
Lo
s
s
-
(
W
at
t
s
)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
125
135
145
155
0
5
10
15
20
25
30
DC
A
l
l
o
w
a
bl
e
C
a
s
e
T
e
m
p
e
ra
t
u
re
- (
C
)
Average Forward Current - I (A)
F(AV)
R (DC) = 1.25C/W
thJC
100
1000
10000
10
100
1000
10000
FS
M
p
N
o
n-
R
e
pet
i
t
i
v
e
S
u
r
g
e
C
u
r
r
e
nt
-
I
(
A
)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
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