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HFA320NJ40D Datasheet, PDF (1/5 Pages) International Rectifier – Ultrafast, Soft Recovery Diode
HEXFREDTM
Features
• Reduced RFI and EMI
• Reduced Snubbing
• Extensive Characterization of
Recovery Parameters
PD -2.513 rev. A 02/99
HFA320NJ40D
Ultrafast, Soft Recovery Diode
Anode
1
Cathode
2
Base AC
VR = 400V
VF(typ.)ƒ = 1V
IF(AV) = 320A
Qrr (typ.) = 420nC
IRRM(typ.) = 8.7A
trr(typ.) = 45ns
di(rec)M/dt (typ.)ƒ = 280A/µs
Description
HEXFREDTM diodes are optimized to reduce losses and EMI/RFI in high frequency
power conditioning systems. An extensive characterization of the recovery
behavior for different values of current, temperature and di/dt simplifies the
calculations of losses in the operating conditions. The softness of the recovery
eliminates the need for a snubber in most applications. These devices are ideally
suited for power converters, motors drives and other applications where
switching losses are significant portion of the total losses.
Absolute Maximum Ratings (per Leg)
Parameter
VR
IF @ TC = 25°C
IF @ TC = 100°C
IFSM
EAS
PD @ TC = 25°C
PD @ TC = 100°C
TJ
TSTG
Cathode-to-Anode Voltage
Continuous Forward Current
Continuous Forward Current
Single Pulse Forward Current 
Non-Repetitive Avalanche Energy ‚
Maximum Power Dissipation
Maximum Power Dissipation
Operating Junction and
Storage Temperature Range
Max.
400
321
160
1200
1.4
625
250
-55 to +150
TO-244AB
Units
V
A
mJ
W
C
Thermal - Mechanical Characteristics
Parameter
Min.
Typ.
Max. Units
RthJC
RthCS
Wt
Junction-to-Case, Single Leg Conducting
Junction-to-Case, Both Legs Conducting
Case-to-Sink, Flat, Greased Surface
Weight
Mounting Torque „
Mounting Torque Center Hole
Terminal Torque
––––
––––
––––
––––
30 (3.4)
12 (1.4)
30 (3.4)
––––
––––
0.10
79 (2.8)
––––
––––
––––
0.24
0.12
––––
––––
40 (4.6)
18 (2.1)
40 (4.6)
°C/W
K/W
g (oz)
lbf•in
(N•m)
Vertical Pull
2 inch Lever Pull
––––
––––
––––
––––
80
lbf•in
35
Note:  Limited by junction temperature
‚ L = 100µH, duty cycle limited by max TJ
ƒ 125°C
„ Mounting surface must be smooth, flat, free or burrs or other
protrusions. Apply a thin even film or thermal grease to mounting
surface. Gradually tighten each mounting bolt in 5-10 lbf•in steps
until desired or maximum torque limits are reached. Module
1