IF(AV) Rectangular 400 A
waveform
VRRM range 35 to 45 V
IFSM @ tp = 5 µs sine 25,000 A
VF@
200 Apk, TJ
= 125°C 0.56 V
(per leg)
TJrange - 55 to 175 °C
Characteristics 401CMQ... Units
Major Ratings and Characteristics Description/Features
The 401CMQ center tap, high current, Schottky rectifier module
series has been optimized 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 high current switching power supplies,
converters, free-wheeling diodes, welding and reverse battery
protection.
175° C TJ operation
Center tap module
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
SCHOTTKY RECTIFIER
401CMQ... SERIES
400 Amp
1
Bulletin PD-20735 rev. B 08/01
TO-244AB Isolated
www.irf.com
Modified JEDEC
Outline TO-244AB Isolated
Dimensions in millimeters and (inches)
2
LUG
T
ERMINAL
ANODE 1
LUG
TERMINAL
ANODE 3
COMMON
CATHODE
ISOLATED BASE
401CMQ... Series
2
Bulletin PD-20735 rev. B 08/01
www.irf.com
VFM Max. Forward Voltage Drop 0.67 V @ 200A
(Per Leg) * See Fig. 1 (1) 0.78 V @ 400A
0.56 V @ 200A
0.68 V @ 400A
IRM Max. Reverse Leakage Current 20 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 180 mA TJ = 125 °C
CTMax. Junction Capacitance (Per Leg) 10,300 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 5.0 nH From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change 10000 V/ µs (Rated VR)
VRMS Insulation Voltage 1000 V
IF(AV) Max. Average Forward (Per Leg) 200 A 50% duty cycle @ TC = 116 °C, rectangular wave form
Current * See Fig. 5 (Per Device) 400
IFSM Max. Peak One Cycle Non-Repetitive 25,000 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 3450 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 270 mJ T J = 25 °C, IAS
= 40 Amps, L = 0.34 mH
(Per Leg)
IAR Repetitive Avalanche Current 40 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Part number 401CMQ035 401CMQ040 401CMQ045
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM
applied
Parameters 401CMQ Units Conditions
A
(1) Pulse Width < 300µs, Duty Cycle <2%
TJMax. Junction Temperature Range -55 to 175 °C
Tstg Max. Storage Temperature Range -55 to 175 °C
RthJC Max. Thermal Resistance Junction 0.4 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 0.2 °C/W DC operation
to Case (Per Package)
RthCS 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. 24 (20)
Max. 35 (30)
Mounting Torque Center Hole Typ. 13.5 (12)
Terminal Torque Min. 35 (30)
Max. 46 (40)
Case Style TO - 244AB isolated Modified JEDEC
Thermal-Mechanical Specifications
Parameters 401CMQ Units Conditions
TJ = 25 °C
VR = rated VR
Kg-cm
(Ibf-in)
Electrical Specifications
35 40 45
Parameters 401CMQ Units Conditions
TJ = 125 °C
401CMQ... Series
3
Bulletin PD-20735 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 - VFM (V)
Instantaneous Forward Current - IF (A)
Reverse Current - I R (mA)
Reverse Voltage - VR (V)
Reverse Voltage - VR
(V)
Junction Capacitance - CT (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
0.001
0.01
0.1
1
10
100
1000
10000
0 1020304050
125˚C
100˚C
75˚C
50˚C
25˚C
150˚C
T = 175˚C
J
1000
10000
0204060
T = 25˚C
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
1
10
100
1000
0 0.3 0.6 0.9 1.2
T = 175˚C
T = 125˚C
T = 25˚C
J
J
J
401CMQ... Series
4
Bulletin PD-20735 rev. B 08/01
www.irf.com
FREE-WHEEL
D IO DE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SW ITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
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: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR
0
25
50
75
100
125
150
175
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
40
60
80
100
120
140
160
180
0 100 200 300
DC
see note (2)
Square wave (D = 0.50)
80% Rated V applied
R
401CMQ... Series
5
Bulletin PD-20735 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:
401 C M Q 045
4 5
035 = 35V
040 = 40V
045 = 45V
