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SCHOTTKY RECTIFIER
Bulletin PD-2.263 rev. D 07/01
401CNQ... SERIES
400 Amp
Major Ratings and Characteristics
Characteristics
401CNQ... Units
IF(AV) Rectangular
waveform
VRRM range
400
35 to 45
IFSM @ tp = 5 µs sine
25,000
VF @200Apk,TJ=125°C
(per leg)
0.56
TJ range
- 55 to 175
A
V
A
V
°C
TO-244AB
Description/Features
The 401CNQ center tap 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
COMMON
CATHODE
80.01 [3.150]
40.26 [1.585]
39.75 [1.565]
2X Ø
7.49 [.295]
6.99 [.275]
23.55 [.927]
20.42 [.804]
34.925 [1.375]
REF.
63.50 [2.500]
60.96 [2.400]
92.71 [3.650]
90.17 [3.550]
NOTES:
1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
2. CONTROLLING DIMENSION: MILLIMETER
Ø
10.41
9.65
[.410]
[.380]
20.32 [.800]
17.78 [.700]
LUG LUG
TERMINAL TERMINAL
ANODE 1 ANODE 2
Ø
4.95 [.195]
4.70 [.185]
1/4-20 SLOTTED HEX
BASE
COMMON CATHODE
15.75 [.620]
14.99 [.590]
3.35 [.132]
3.02 [.119]
Modified JEDEC
Outline TO-244AB
Dimensions in millimeters and (inches)
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401CNQ... Series
Bulletin PD-2.263 rev. D 07/01
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
401CNQ035
35
401CNQ040
40
401CNQ045
45
Parameters
IF(AV) Max.AverageForward (PerLeg)
Current * See Fig. 5 (PerDevice)
IFSM Max.PeakOneCycleNon-Repetitive
SurgeCurrent (Per Leg) *SeeFig.7
EAS Non-RepetitiveAvalancheEnergy
(Per Leg)
IAR RepetitiveAvalancheCurrent
(Per Leg)
Electrical Specifications
401CNQ Units Conditions
200
400
25,000
3450
270
A 50%dutycycle@TC=145°C,rectangularwaveform
5µs Sineor3µsRect.pulse Following any rated
A load condition and with
10ms Sine or 6ms Rect. pulse rated VRRMapplied
mJ TJ = 25 °C, IAS = 40 Amps, L = 0.34 mH
40 A Currentdecayinglinearlytozeroin1µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters
401CNQ Units Conditions
VFM Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
0.67
0.78
0.56
0.68
IRM
CT
LS
dv/dt
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2 (1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
Max. Voltage Rate of Change
(Rated VR)
20
180
10,300
5.0
10000
Thermal-Mechanical Specifications
V @ 200A
V @ 400A
V @ 200A
TJ = 25 °C
V @ 400A
mA TJ = 25 °C
mA TJ = 125 °C
VR = rated VR
pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
nH From top of terminal hole to mounting plane
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
Parameters
401CNQ Units Conditions
TJ Max.JunctionTemperatureRange
Tstg Max.StorageTemperatureRange
RthJC Max.ThermalResistanceJunction
toCase (Per Leg)
RthJC Max.ThermalResistanceJunction
toCase(Per Package)
RthCS TypicalThermalResistance,Case
to Heatsink
wt ApproximateWeight
T MountingTorqueBase
Min.
Max.
MountingTorqueCenterHole Typ.
Terminal Torque
Min.
Case Style
Max.
-55to175
-55to175
0.20
°C
°C
°C/W DCoperation
* See Fig. 4
0.10 °C/W DCoperation
0.10 °C/W Mountingsurface,smoothandgreased
79(2.80) g(oz.)
24(20)
35(30)
13.5(12)
35(30)
Kg-cm
(Ibf-in)
46(40)
TO - 244AB Modified JEDEC
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1000
100
10
TJ = 175˚C
TJ = 125˚C
TJ = 25˚C
401CNQ... Series
Bulletin PD-2.263 rev. D 07/01
10000
1000
100
10
1
0.1
0.01
TJ = 175˚C
150˚C
125˚C
100˚C
75˚C
50˚C
25˚C
0.001
0
10 20 30 40 50
Reverse Voltage-VR(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
10000
TJ = 25˚C
1
0 0.3 0.6 0.9 1.2
Forward Voltage Drop-VFM(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
1
1000
0 10 20 30 40 50 60
Reverse Voltage-VR(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
D = 0.75
0.1
D = 0.50
D = 0.33
D = 0.25
D = 0.20
PDM
0.01
t1
t2
0.001
0.00001
Single Pulse
(Thermal Resistance)
0.0001 0.001
0.01
Notes:
1. Duty factor D = t1 / t2
2. Peak TJ = PDM x ZthJC + TC
0.1 1 10 100
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t 1,RectangularPulseDuration(Seconds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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401CNQ... Series
Bulletin PD-2.263 rev. D 07/01
180 175
160
140 DC
120
100
Square wave (D = 0.50)
80 80% Rated VRapplied
60
see note (2)
40
0 100 200 300
AverageForwardCurrent-IF(AV)(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
100000
150
125 D = 0.20
D = 0.25
100 D = 0.33
D = 0.50
75 D = 0.75
50
RMS Limit
DC
25
0
0 50 100 150 200 250 300
AverageForwardCurrent-IF(AV)(A)
Fig.6-Forward Power Loss Characteristics
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
10000
DUT
C URRE NT
M ONITOR
1000
10
100
1000
10000
SquareWavePulseDuration-t p(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
L
IR F P 46 0
Rg = 25 ohm
HIG H-SPEED
SW ITC H
FR EE-W HEEL
D IO D E
4 0H FL40 S02
+ Vd = 25 Volt
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
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401CNQ... Series
Bulletin PD-2.263 rev. D 07/01
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.
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. 07/01
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