Bulletin PD-20581 rev. A 07/01
408CNQ060
SCHOTTKY RECTIFIER
400 Amp
TO-244AB
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
V
F
T
J
@ tp = 5 µs sine
@200Apk, T
J
=125°C
(per leg)
range
Description/Features
The 408CNQ 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 150 °C junction temperature. Typical applications are in
high current switching power supplies, plating power supplies,
UPS systems, converters, free-wheeling diodes, welding, and
reverse battery protection.
150 °C T
J
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
408CNQ... Units
400
60
25,500
0.59
- 55 to 150
A
V
A
V
°C
80.01 [3.150]
40.26 [1.585]
39.75 [1.565]
COMMON
CATHODE
Ø
10.41 [.410]
9.65 [.380]
20.32 [.800]
17.78 [.700]
LUG
TERMINAL
ANODE 1
LUG
TERMINAL
ANODE 2
2X Ø
7.49 [.295]
6.99 [.275]
34.925 [1.375]
REF.
63.50 [2.500]
60.96 [2.400]
Ø
4.95 [.195]
4.70 [.185]
1/4-20 SLOTTED HEX
BASE
COMMON CATHODE
23.55 [.927]
20.42 [.804]
15.75 [.620]
14.99 [.590]
3.35 [.132]
3.02 [.119]
92.71 [3.650]
90.17 [3.550]
NOTES:
1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
2. CONTROLLING DIMENSION: MILLIMETER
Modified JEDEC
Outline TO-244AB
Dimensions in millimeters and (inches)
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1
408CNQ060
Bulletin PD-20581 rev. A 07/01
Voltage Ratings
Part number
V
R
V
RWM
Max. DC Reverse Voltage (V)
Max. Working Peak Reverse Voltage (V)
408CNQ060
60
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
I
FSM
E
AS
I
AR
* See Fig. 5
(Per Leg)
(Per Device)
408CNQ Units Conditions
200
400
25,500
3,300
15
1
mJ
A
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 1 Amps, L = 30 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
A
50% duty cycle @ T
C
= 115 °C, rectangular wave form
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
408CNQ Units Conditions
0.68
0.83
0.59
0.76
2.2
600
11000
5.0
10000
V
V
V
V
mA
mA
pF
nH
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
@ 200A
@ 400A
@ 200A
@ 400A
T
J
= 25 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
Typical Series Inductance
(1)
(Per Leg)
Max. Junction Capacitance (Per Leg)
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
From top of terminal hole to mounting plane
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
-55 to 150
-55 to 150
0.20
0.10
0.10
°C
°C
°C/W DCoperation
°C/W DCoperation
408CNQ Units Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
Approximate Weight
T
Mounting Torque
Min.
Max.
Mounting Torque Center Hole
Typ.
TerminalTorque
Min.
Max.
Case Style
* See Fig. 4
°C/W Mounting surface , smooth and greased
79 (2.80) g (oz.)
24(20)
Kg-cm
(Ibf-in)
35 (30)
13.5 (12)
35 (30)
46 (40)
TO-244AB
Modified JEDEC
2
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408CNQ060
Bulletin PD-20581 rev. A 07/01
1000
1000
100
10
1
0.1
0.01
0
T J = 150˚C
T = 125˚C
J
T = 25˚C
J
TJ = 150˚C
125˚C
100˚C
75˚C
50˚C
25˚C
Instantaneous Forward Current - I
F
(A)
100
Reverse Current - I
R
(mA)
10
20
30
40
50
60
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
100000
Junction Capacitance - C
T
(pF)
T = 25˚C
J
10
10000
1
0
0.2
0.4
0.6
0.8
1
1.2
Forward Voltage Drop - V
FM
(V)
1.4
Fig. 1 - Max. Forward Voltage Drop Characteristics
1000
0
10
20
30
40
50
60
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
1
Thermal Impedance Z
thJC
(°C/W)
0.1
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
t1
0.01
Single Pulse
(Thermal Resistance)
Notes:
1. Duty factor D = t1/ t2
t2
2. Peak Tj = Pdm x ZthJC + Tc
.001
0.00001
0.0001
0.001
0.01
0.1
1
10
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
408CNQ060
Bulletin PD-20581 rev. A 07/01
160
Allowable Case Temperature (°C)
Average Power Loss (Watts)
200
180
160
140
120
100
80
60
40
20
0
150
140
DC
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
RMS Limit
DC
130
120
110
100
90
0
50
100
150
200
250
300
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Non-Repetitive Surge Current - I
FSM
(A)
Square wave (D = 0.50)
80% Rated Vr applied
see note (2)
0
50
100
150
200
250
300
Average Forward Current - I
F(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
100000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
10000
1000
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
L
H IG H -SPE ED
SW ITC H
FREE-W HE EL
D IO D E
40H FL40S02
V d = 25 V olt
D UT
IRFP460
Rg = 25 ohm
+
C UR RE N T
M O N ITO R
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
4
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408CNQ060
Bulletin PD-20581 rev. A 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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Analogue and Mixed Signal
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