Bulletin PD-21036 05/05
40CTQ150SPbF
40CTQ150-1PbF
SCHOTTKY RECTIFIER
40 Amp
I
F(AV)
= 40Amp
V
R
= 150V
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 40CTQ.. center tap Schottky rectifier has been optimized
for very low forward voltage drop, with moderate leakage.
The proprietary barrier technology allows for reliable opera-
tion up to 175° C junction temperature. Typical applications
are in switching power supplies, converters, free-wheeling
diodes, and reverse battery protection.
175° C T
J
operation
Center tap TO-220 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
150
1500
0.71
- 55 to 175
°C
Case Styles
40CTQ150SPbF
40CTQ150-1PbF
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
D
2
PAK
www.irf.com
TO-262
1
40CTQ150SPbF, 40CTQ150-1PbF
Bulletin PD-21036 05/05
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
40CTQ150SPbF, 40CTQ150-1PbF
150
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current * See Fig. 5
I
FSM
E
AS
I
AR
(Per Leg)
(Per Device)
40CTQ.. Units
20
40
1500
250
1.0
1.5
A
mJ
A
A
Conditions
50% duty cycle @ T
C
= 140 °C, rectangular wave form
5µs Sine or 3µs Rect. pulse
10ms Sine or 6ms Rect. pulse
Following any rated
load condition and with
rated V
RRM
applied
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
T
J
= 25 °C, I
AS
= 1.5 Amps, L = 0.9 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)
40CTQ.. Units
0.93
1.16
0.71
0.85
50
15
450
8.0
10000
V
V
V
V
µA
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
Per Leg
Junction to Case
R
thJC
Max. Thermal Resistance Per Package
Junction to Case
R
thCS
Typical Thermal Resistance,
Case to Heatsink
wt
T
Approximate Weight
Mounting Torque
Marking Device
Min.
Max.
0.75
0.5
2 (0.07)
6 (5)
12 (10)
°C/W DC operation
40CTQ.. Units
-55 to 175
-55 to 175
1.5
°C
°C
Conditions
R
thJC
Max. Thermal Resistance
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
Non-lubricated threads
(Ibf-in)
Case style D
2
Pak
Case style TO-262
40CTQ150S
40CTQ150-1
2
www.irf.com
40CTQ150SPbF, 40CTQ150-1PbF
Bulletin PD-21036 05/05
100
(mA)
1000
100
10
1
0.1
0.01
0.001
Tj = 175˚C
Tj = 175˚C
150˚C
125˚C
100˚C
75˚C
50˚C
25˚C
Instantaneous Forward Current - I
Reverse Current - I
F
(A)
R
0
20 40 60 80 100 120 140 160
Reverse Voltage - V
R
(V)
10
Tj = 125˚C
Tj = 25˚C
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage
1000
(pF)
T
J
= 25˚C
Junction Capacitance - C
T
100
1
0
Forward Voltage Drop - V
FM
(V)
10
0.4
0.8
1.2
1.6
0
40
80
120
160
Fig. 1 - Maximum Forward Voltage Drop Characteristics
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
10
(°C/W)
thJC
Thermal Impedance Z
1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
t1
0.1
Single Pulse
(Thermal Resistance)
Notes:
t2
1. Duty factor D = t1/ t 2
2. Peak Tj = Pdmx ZthJC + Tc
0.01
0.00001
0.0001
0.001
0.01
0.1
1
10
100
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics
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3
40CTQ150SPbF, 40CTQ150-1PbF
Bulletin PD-21036 05/05
180
Allowable Case Temperature (°C)
Average Power Loss ( Watts )
25
20
DC
160
DC
15
RMS Limit
140
Square wave (D = 0.50)
10
5
0
120
80% Vr applied
see note (2)
DC = 0.20
DC = 0.25
DC = 0.33
DC = 0.50
DC = 0.75
100
0
5
10
15
20
25
30
Average Forward Current - I
F
(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
0
5
10
15
20
25
30
Average Forward Current - I
F
(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
FSM
(A)
10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
Non-Repetitive Surge Current - I
1000
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R
= 80% V
R
applied
4
www.irf.com
40CTQ150SPbF, 40CTQ150-1PbF
Bulletin PD-21036 05/05
Outline Table
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
Dimensions in millimeters and (inches)
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
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5
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