I
F(AV)
Rectangular
400
A
waveform
V
RRM
range
35 to 45
V
I
FSM
@ tp = 5 s sine
29,000
A
V
F
@
200Apk, T
J
=125C
0.52
V
(per leg)
T
J
range
- 55 to 150
C
Characteristics
400CMQ... Units
Major Ratings and Characteristics
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
SCHOTTKY RECTIFIER
400 Amp
400CMQ... SERIES
1
Bulletin PD-20734 rev. B 08/01
TO-244AB Isolated
www.irf.com
Modified JEDEC
Outline TO-244AB Isolated
Dimensions in millimeters and (inches)
2
LUG
TERMINAL
ANODE 1
LUG
TERMINAL
ANODE 3
COMMON
CATHODE
ISOLATED BASE
400CMQ... Series
2
Bulletin PD-20734 rev. B 08/01
www.irf.com
Part number
400CMQ035
400CMQ040
400CMQ045
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
Absolute Maximum Ratings
Parameters
400CMQ Units
Conditions
A
I
F(AV)
Max. Average Forward
(Per Leg)
200
A
50% duty cycle @ T
C
= 78 C, rectangular wave form
Current
* See Fig. 5
(Per Device)
400
I
FSM
Max. Peak One Cycle Non-Repetitive
29,000
5s Sine or 3s Rect. pulse
Surge Current (Per Leg) * See Fig. 7
3400
10ms Sine or 6ms Rect. pulse
E
AS
Non-Repetitive Avalanche Energy
180
mJ
T
J
= 25 C, I
AS
= 40 Amps, L = 0.22 mH
(Per Leg)
I
AR
Repetitive Avalanche Current
40
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
(1) Pulse Width < 300s, Duty Cycle <2%
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
0.4
C/W DC operation
* See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
0.2
C/W DC operation
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
0.1
C/W Mounting surface , smooth and greased
to Heatsink
wt
Approximate Weight
79 (2.80)
g (oz.)
T
Mounting Torque Base
Min.
40 (35)
Max.
58 (50)
Mounting Torque Center Hole
Typ.
17 (15)
Terminal Torque
Min.
58 (50)
Max.
86 (75)
Case Style
TO - 244AB isolated Modified JEDEC
Thermal-Mechanical Specifications
Parameters
400CMQ Units
Conditions
T
J
= 25 C
V
R
= rated V
R
Kg-cm
(Ibf-in)
Electrical Specifications
35
40
45
V
FM
Max. Forward Voltage Drop
0.57
V
@ 200A
(Per Leg) * See Fig. 1
(1)
0.73
V
@ 400A
0.52
V
@ 200A
0.68
V
@ 400A
I
RM
Max. Reverse Leakage Current
20
mA
T
J
= 25 C
(Per Leg) * See Fig. 2
(1)
800
mA
T
J
= 125 C
V
F(TO)
Threshold Voltage
0.32
V
T
J
= T
J
max.
r
t
Forward Slope Resistance
0.81
m
C
T
Max. Junction Capacitance (Per Leg)
10,300
pF
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25C
L
S
Typical Series Inductance (Per Leg)
5.0
nH
From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change
10000
V/ s (Rated V
R
)
V
RMS
Insulation Voltage
1000
V
Parameters
400CMQ Units
Conditions
T
J
= 125 C
Following any rated
load condition and with
rated V
RRM
applied
400CMQ... Series
3
Bulletin PD-20734 rev. B 08/01
www.irf.com
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
Forward Voltage Drop - V
FM
(V)
Instantaneous Forward Current - I
F
(A)
Reverse Current - I
R
(mA)
Reverse Voltage - V
R
(V)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(pF)
t
1
, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z
thJC
(C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
0.01
0.1
1
10
100
1000
10000
0
10
20
30
40
50
125C
100C
75C
50C
25C
T = 150C
J
1000
10000
0
10
20
30
40
50
T = 25C
J
1
10
100
1000
0
0.3
0.6
0.9
1.2
T = 150C
T = 125C
T = 25C
J
J
J
0.001
0.01
0.1
1
0.00001
0.0001
0.001
0.01
0.1
1
10
100
Single Pulse
(Thermal Resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
2
t
1
t
P
DM
J
DM
thJC
C
2
1
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
400CMQ... Series
4
Bulletin PD-20734 rev. B 08/01
www.irf.com
FR EE-W HE EL
D IO D E
40H FL40S02
C UR RE N T
M O N ITO R
H IG H -SPE ED
SW ITC H
IRFP460
L
D UT
Rg = 25 ohm
V d = 25 V olt
+
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Average Forward Current - I
F(AV)
(A)
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
Allowable Case Temperature (C)
Non-Repetitive Surge Current - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
Average Forward Current - I
F(AV)
(A)
Average Power Loss (Watts)
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
0
30
60
90
120
150
180
0
100
200
300
DC
see note (2)
Square wave (D = 0.50)
80% Rated V applied
R
0
30
60
90
120
150
180
0
50
100
150
200
250
300
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
1000
10000
100000
10
100
1000
10000
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
400CMQ... Series
5
Bulletin PD-20734 rev. B 08/01
www.irf.com
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
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.
Ordering Information Table
Device Code
1
2
3
1
-
Current Rating: 400A
2
-
Common Cathode
3
-
Module
4
-
Schottky Q Series
5
-
Voltage Rating:
400
C
M
Q
045
4
5
035 = 35V
040 = 40V
045 = 45V
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