Bulletin PD-20734 rev. B 08/01
400CMQ... SERIES
SCHOTTKY RECTIFIER
400 Amp
TO-244AB Isolated
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
V
F
T
J
@ tp = 5 µs sine
@200Apk, T
J
=125°C
(per leg)
range
Description/Features
The 400CMQ high current Schottky rectifier module series 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, welding, and reverse battery protection.
150 °C T
J
operation
Center tap module - Isolated Base
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
400CMQ... Units
400
35 to 45
29,000
0.52
A
V
A
V
- 55 to 150
°C
LUG
TERMINAL
ANODE 1
COMMON
CATHODE
LUG
TERMINAL
ANODE 3
2
ISOLATED BASE
Modified JEDEC
Outline TO-244AB Isolated
Dimensions in millimeters and (inches)
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400CMQ... Series
Bulletin PD-20734 rev. B 08/01
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
400CMQ035
35
400CMQ040
40
400CMQ045
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
I
FSM
E
AS
I
AR
* See Fig. 5
(Per Leg)
(PerDevice)
400CMQ Units
200
400
29,000
3400
180
40
A
mJ
A
A
Conditions
50% duty cycle @ T
C
= 78 °C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 40 Amps, L = 0.22 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
400CMQ Units
0.57
0.73
0.52
0.68
20
800
0.32
0.81
10,300
5.0
10000
1000
V
V
V
V
mA
mA
V
mΩ
pF
@ 200A
@ 400A
@ 200A
@ 400A
T
J
= 25 °C
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
V
F(TO)
r
t
C
T
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
Threshold Voltage
Forward Slope Resistance
Max. Junction Capacitance (Per Leg)
(1)
T
J
= 125 °C
T
J
= T
J
max.
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
L
S
Typical Series Inductance (Per Leg)
dv/dt Max. Voltage Rate of Change
V
RMS
Insulation Voltage
nH From top of terminal hole to mounting plane
V/ µs (Rated V
R
)
V
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
400CMQ Units
-55 to 150
-55 to 150
0.4
0.2
0.1
°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
wt
T
to Heatsink
Approximate Weight
Mounting Torque Base
Mounting Torque Center Hole
TerminalTorque
Case Style
°C/W DC operation
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
Min.
Max.
Typ.
Min.
Max.
79 (2.80) g (oz.)
40(35)
58 (50)
Kg-cm
17 (15)
(Ibf-in)
58 (50)
86 (75)
TO - 244AB isolated Modified JEDEC
2
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400CMQ... Series
Bulletin PD-20734 rev. B 08/01
1000
10000
1000
Reverse Current - I
R
(mA)
T J = 150˚C
125˚C
100
10
1
0.1
0.01
0
10
100˚C
75˚C
50˚C
25˚C
Instantaneous Forward Current - I
F
(A)
100
T
J
= 150˚C
T
J
= 125˚C
T
J
= 25˚C
20
30
40
50
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
10000
10
Junction Capacitance - C
T
(pF)
T = 25˚C
J
1
0
0.3
0.6
0.9
1.2
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
1000
0
10
20
30
40
50
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
Thermal Impedance Z
thJC
(°C/W)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
0.1
P
DM
t1
0.01
Notes:
t2
Single Pulse
(Thermal Resistance)
1. Duty factor D = t1 / t2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.001
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 (Per Leg)
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400CMQ... Series
Bulletin PD-20734 rev. B 08/01
180
Allowable Case Temperature (°C)
180
RMS Limit
150
DC
Average Power Loss (Watts)
150
120
90
60
30
0
0
50
100 150 200 250 300
Average Forward Current - I
F(AV)
(A)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
120
90
60
Square wave (D = 0.50)
80% Rated V applied
R
30
see note (2)
0
0
100
200
300
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Non-Repetitive Surge Current - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
100000
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
10000
1000
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
L
H IG H -SPE ED
SW ITC H
FREE-W HE EL
D IO D E
40H FL40S02
V d = 25 V olt
D UT
IRFP460
Rg = 25 ohm
+
C UR RE N T
M O N ITO R
Fig. 8 - Unclamped Inductive Test Circuit
(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
R1
= 80% rated V
R
4
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400CMQ... Series
Bulletin PD-20734 rev. B 08/01
Ordering Information Table
Device Code
400
1
C
2
M
3
Q
4
045
5
1
2
3
4
5
-
-
-
-
-
Current Rating: 400A
Common Cathode
Module
Schottky Q Series
Voltage Rating:
035 = 35V
040 = 40V
045 = 45V
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 08/01
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