IF(AV) Rectangular 400 A
waveform
VRRM range 60 V
IFSM @ tp = 5 µs sine 25,500 A
VF@
200Apk, TJ=125°C 0.59 V
(per leg)
TJrange - 55 to 150 °C
Characteristics 408CNQ... Units
Major Ratings and Characteristics
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 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
Description/Features
TO-244AB
SCHOTTKY RECTIFIER 400 Amp
408CNQ060
Bulletin PD-20581 rev. A 07/01
BASE
ANODE 2
63.50 [2.500]
60.96 [2.400]
23.55 [.927]
20.42 [.804] 14.99 [.590]
15.75 [.620]
20.32 [.800]
17.78 [.700]
39.75 [1.565]
40.26 [1.585]
80.01 [3.150]
34.925 [1.375]
3.35 [.132]
3.02 [.119]
90.17 [3.550]
92.71 [3.650]
7.49 [.295]
6.99 [.275]
2X Ø
10.41 [.410]
9.65 [.380]
Ø
4.70 [.185]
4.95 [.195]
1/4-20 SLOTTED HEX
COMMON
CATHODE
REF.
TERMINAL
LUG
COMMON CATHODE
ANODE 1
TERMINAL
LUG
Ø
NOTES:
1. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
2. CONTROLLING DIMENSION: MILLIMETER
Modified JEDEC
Outline TO-244AB
Dimensions in millimeters and (inches)
1
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408CNQ060
2
Bulletin PD-20581 rev. A 07/01
www.irf.com
VFM Max. Forward Voltage Drop 0.68 V @ 200A
(Per Leg) * See Fig. 1 (1) 0.83 V @ 400A
0.59 V @ 200A
0.76 V @ 400A
IRM Max. Reverse Leakage Current 2.2 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 600 mA TJ = 125 °C
C TMax. Junction Capacitance (Per Leg) 11000 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
L STypical 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)
IF(AV) Max. Average Forward (Per Leg) 200 A 50% duty cycle @ T C = 115 °C, rectangular wave form
Current * See Fig. 5 (Per Device) 400
IFSM Max. Peak One Cycle Non-Repetitive 25,500 A 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 3,300 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 15 mJ T J = 25 °C, IAS
= 1 Amps, L = 30 mH
(Per Leg)
IAR Repetitive Avalanche Current 1 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Part number 408CNQ060
VRMax. DC Reverse Voltage (V) 60
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM
applied
Parameters 408CNQ Units Conditions
TJ = 25 °C
TJ = 125 °C
VR = rated VR
Electrical Specifications
(1) Pulse Width < 300µs, Duty Cycle <2%
TJMax. Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance Junction 0.20 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 0.10 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.10 °C/W Mounting surface , smooth and greased
to Heatsink
wt Approximate Weight 79 (2.80) g (oz.)
T Mounting Torque 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 Modified JEDEC
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
Parameters 408CNQ Units Conditions
Parameters 408CNQ Units Conditions
408CNQ060
3
Bulletin PD-20581 rev. A 07/01
www.irf.com
Fig. 4 - Max. Thermal Impedance ZthJC 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)
t1, Rectangular Pulse Duration (Seconds)
Thermal Impedance ZthJC (°C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
1000
10000
100000
0 102030405060
T = 25˚C
J
.001
0.01
0.1
1
0.00001 0.0001 0.001 0.01 0.1 1 10
Single Pulse
(Thermal Resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
2
t
1
t
P
DM
1
10
100
1000
0 0.2 0.4 0.6 0.8 1 1.2 1.4
T = 150˚C
T = 125˚C
T = 25˚C
J
J
J
0.01
0.1
1
10
100
1000
0 102030405060
125˚C
T = 150˚C
75˚C
J
25˚C
100˚C
50˚C
408CNQ060
4
Bulletin PD-20581 rev. A 07/01
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 - tp (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
Allowable Case Temperature (°C)
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
1000
10000
100000
10 100 1000 10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
Non-Repetitive Surge Current - I FSM (A)
90
100
110
120
130
140
150
160
0 50 100 150 200 250 300
DC
see note (2)
Square wave (D = 0.50)
80% Rated Vr applied
0
20
40
60
80
100
120
140
160
180
200
0 50 100 150 200 250 300
DC
RMS Limit
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
408CNQ060
5
Bulletin PD-20581 rev. A 07/01
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. 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.
