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SCHOTTKY RECTIFIER
Bulletin PD-2.264 rev. D 05/02
400CNQ... SERIES
400 Amp
Major Ratings and Characteristics
Characteristics
400CNQ... Units
IF(AV) Rectangular
waveform
VRRM range
400
35 to 50
IFSM @ tp = 5 µs sine
29,000
VF @200Apk, TJ=125°C
(per leg)
0.52
TJ range
- 55 to 150
A
V
A
V
°C
TO-244AB
Description/ Features
The 400CNQ center tap, 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 applications are in switching power
supplies, converters, free-wheeling diodes, welding, and re-
verse battery protection.
150 °C TJ operation
Center tap module
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
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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400CNQ... Series
Bulletin PD-2.264 rev. D 05/02
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
400CNQ035 400CNQ040 400CNQ045 400CNQ050
35 40 45
50
Parameters
400CNQ Units Conditions
IF(AV) Max. Average Forward (Per Leg)
Current * See Fig. 5 (Per Device)
IFSM Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
EAS Non-RepetitiveAvalancheEnergy
(Per Leg)
200
400
29,000
3400
180
A 50% duty cycle @ TC = 114 °C, rectangular wave form
5µs Sine or 3µs Rect. pulse Following any rated
A load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
mJ TJ = 25 °C, IAS = 40 Amps, L = 0.22 mH
IAR RepetitiveAvalancheCurrent
(Per Leg)
Electrical Specifications
40 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. VA = 1.5 x VR typical
Parameters
400CNQ Units Conditions
VFM Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
IRM Max. Reverse Leakage Current
(Per Leg) * See Fig. 2 (1)
0.57
0.73
0.52
0.68
20
1
VF(TO) Threshold Voltage
rt Forward Slope Resistance
CT Max. Junction Capacitance (Per Leg)
LS Typical Series Inductance (Per Leg)
dv/dt Max. Voltage Rate of Change
0.32
0.81
10,300
5.0
10000
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
V
V
V
V
mA
A
V
m
pF
nH
V/ µs
@ 200A
@ 400A
@ 200A
@ 400A
TJ = 25 °C
TJ = 125 °C
TJ = TJ max.
TJ = 25 °C
TJ = 125 °C
VR = rated VR
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
From top of terminal hole to mounting plane
(Rated VR)
Parameters
400CNQ Units Conditions
TJ Max. Junction Temperature Range
Tstg Max. Storage Temperature Range
RthJC Max. Thermal Resistance Junction
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction
to Case (Per Package)
RthCS Typical Thermal Resistance, Case
to Heatsink
wt Approximate Weight
T Mounting Torque Base
Min.
Max.
Mounting Torque Center Hole Typ.
Terminal Torque
Min.
Max.
Case Style
-55 to 150
-55 to 150
0.20
°C
°C
°C/W DCoperation
* See Fig. 4
0.10 °C/W DCoperation
0.10 °C/W Mounting surface , smooth and greased
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
T J= 150 C
T J= 125 C
T J= 25 C
400CNQ... Series
Bulletin PD-2.264 rev. D 05/02
10000
1000
100
10
T J = 150 C
125 C
100 C
75 C
1 50 C
25 C
0.1
0.01
0 5 10 15 20 25 30 35 40 45
Reverse Voltage - V R (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10000
TJ= 25 C
1
0 0.2 0.4 0.6 0.8 1 1.2
Forward Voltage Drop - VFM (V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
1000
0
10 20 30 40 50
Reverse Voltag e - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
D = 0.75
0.1
D = 0.50
D = 0.33
D = 0.25
D = 0.20
PD M
0.01
0.001
0.00001
Single Pulse
(Therm al Resistance)
N o t e s:
t1
t2
1. Duty factor D = t 1/ t 2
2. Pe ak TJ = PD M x Z thJC+ T C
0.0001
0.001
0.01
0.1
1
t 1 , Rectangular Pulse Duration (Seco nds)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
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400CNQ... Series
Bulletin PD-2.264 rev. D 05/02
160
150
140
130
120
110
100 Square wave (D = 0.50)
90 80% Rated V R ap plied
DC
200
180
D = 0.20
D = 0.25
160 D = 0.33
D = 0.50
140 D = 0.75
120
RM S Lim it
100
80
60
DC
80 40
70
see note (2)
60
0 50 100 150 200 250 300
Average Forward Current - I F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
20
0
0 50 100 150 200 250 300
Average Forward Current - I F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
100000
At Any Rated Load C ondition
An d W ith Rated V RRM Ap plied
Follow ing Surg e
10000
DUT
C URRE NT
M ONITOR
1000
10
100
1000
10000
Square W ave Pulse D uration - t p (m icrosec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
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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400CNQ... Series
Bulletin PD-2.264 rev. D 05/02
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. 05/02
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