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400CNQ045PbF
Vishay High Power Products
Schottky Rectifier, 400 A
Lug
terminal
anode 1
Lug
terminal
anode 2
TO-244
Base common
cathode
PRODUCT SUMMARY
IF(AV)
VR
400 A
45 V
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
CHARACTERISTICS
IF(AV)
Rectangular waveform
VRRM
IFSM
tp = 5 µs sine
VF 200 Apk, TJ = 125 °C (per leg)
TJ Range
FEATURES
• 150 °C TJ operation
• Center tap module
• Very low forward voltage drop
• High frequency operation
• Guard ring for enhanced ruggedness and long term
reliability
• Lead (Pb)-free
• Designed and qualified for industrial level
DESCRIPTION
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, freewheeling diodes, welding, and
reverse battery protection.
VALUES
400
45
29 000
0.52
- 55 to 150
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
VR
VRWM
400CNQ045PbF
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Maximum average forward
current
See fig. 5
per leg
per device
IF(AV)
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
IFSM
Non-repetitive avalanche energy per leg
EAS
Repetitive avalanche current per leg
IAR
TEST CONDITIONS
50 % duty cycle at TC = 114 °C, rectangular waveform
5 µs sine or 3 µs rect. pulse
10 ms sine or 6 ms rect. pulse
Following any rated load
condition and with rated
VRRM applied
TJ = 25 °C, IAS = 19 A, L = 1 mH
Current decaying linearly to zero in 1 µs
Frequency limited by TJ maximum VA = 1.5 x VR typical
VALUES
200
400
29 000
3400
180
40
UNITS
A
mJ
A
Document Number: 94204
Revision: 29-Apr-08
For technical questions, contact: ind-modules@vishay.com
www.vishay.com
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400CNQ045PbF
Vishay High Power Products Schottky Rectifier, 400 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
Maximum forward voltage drop per leg
See fig. 1
VFM (1)
Maximum reverse leakage current per leg
See fig. 2
Threshold voltage
Forward slope resistance
Maximum junction capacitance per leg
Typical series inductance per leg
Maximum voltage rate of change
Note
(1) Pulse width < 300 µs, duty cycle < 2 %
IRM (1)
VF(TO)
rt
CT
LS
dV/dt
200 A
400 A
200 A
400 A
TJ = 25 °C
TJ = 125 °C
TEST CONDITIONS
TJ = 25 °C
TJ = 125 °C
VR = Rated VR
TJ = TJ maximum
VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C
From top of terminal hole to mounting plane
Rated VR
VALUES
0.57
0.73
0.52
0.7
20
1.2
0.32
0.81
10 300
5.0
10 000
UNITS
V
mA
A
V
mΩ
pF
nH
V/µs
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
SYMBOL
Maximum junction and storage temperature range
Thermal resistance, junction to case per leg
Thermal resistance, junction to case per module
TJ, TStg
RthJC
Thermal resistance, case to heatsink
RthCS
Weight
Mounting torque
Mounting torque center hole
Terminal torque
Vertical pull
2" lever pull
MIN.
- 55
-
-
-
-
-
35.4 (4)
30 (3.4)
30 (3.4)
-
-
TYP.
-
-
-
0.10
68
2.4
-
-
-
MAX.
150
0.19
0.095
-
-
-
53.1 (6)
40 (4.6)
44.2 (5)
80
35
UNITS
°C
°C/W
g
oz.
lbf in
(N m)
lbf in
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For technical questions, contact: ind-modules@vishay.com
Document Number: 94204
Revision: 29-Apr-08

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400CNQ045PbF
Schottky Rectifier, 400 A Vishay High Power Products
1000
TJ = 150 °C
100
TJ = 125 °C
10
TJ = 25 °C
1
0 0.2 0.4 0.6 0.8 1.0 1.2
VFM - Forward Voltage Drop (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
10 000
10 000
1000
100
10
1
0.1
TJ = 150 °C
TJ = 125 °C
TJ = 100 °C
TJ = 75 °C
TJ = 50 °C
TJ = 25 °C
0.01
0 5 10 15 20 25 30 35 40 45
VR - Reverse Voltage (V)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
TJ = 25 °C
1000
0
10 20 30 40 50
VR - Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
10
1
0.1
0.01
0.00001
Single pulse
(thermal resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
t
1
t
2
Notes:
1. Duty factor D = t1/t2
2. Peak TJ = PDM x ZthJC + TC
0.0001
0.001
0.01
0.1
1
t1 - Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics (Per Leg)
10
Document Number: 94204
Revision: 29-Apr-08
For technical questions, contact: ind-modules@vishay.com
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400CNQ045PbF
Vishay High Power Products Schottky Rectifier, 400 A
160
150
140 DC
130
120
Square wave (D = 0.50)
110 80 % rated VR applied
100
90 See note (1)
80
0
50 100 150 200 250 300
IF(AV) - Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
200
180
D = 0.20
D = 0.25
160 D = 0.33
D = 0.50
140 D = 0.75
120
100
RMS limit
80
60 DC
40
20
0
0 50 100 150 200 250 300
IF(AV) - Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
100 000
At any rated load condition
and with rated VRRM applied
following surge
10 000
1000
10
100
1000
10 000
tp - Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
D.U.T.
Current
monitor
L
IRFP460
Rg = 25 Ω
High-speed
switch
Freewheel
diode
+ Vd = 25 V
40HFL40S02
Fig. 8 - Unclamped Inductive Test Circuit
Note
(1) Formula used: TC = TJ - (Pd + PdREV) x RthJC;
Pd = Forward power loss = IF(AV) x VFM at (IF(AV)/D) (see fig. 6);
PdREV = Inverse power loss = VR1 x IR (1 - D); IR at VR1 = 80 % rated VR
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For technical questions, contact: ind-modules@vishay.com
Document Number: 94204
Revision: 29-Apr-08

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400CNQ045PbF
Schottky Rectifier, 400 A Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
40 0
C N Q 045 PbF
1 2 3 456
1 - Average current rating (x 10)
2 - Product silicon identification
3 - C = Circuit configuration
4 - N = Not isolated
5 - Q = Schottky rectifier diode
6 - Voltage rating (045 = 45 V)
7 - Lead (Pb)-free
7
Dimensions
LINKS TO RELATED DOCUMENTS
http://www.vishay.com/doc?95021
Document Number: 94204
Revision: 29-Apr-08
For technical questions, contact: ind-modules@vishay.com
www.vishay.com
5