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HFA90NH40R Datasheet, PDF (1/5 Pages) International Rectifier – ultrafast, soft recovery diode
HEXFREDTM
PD -2.469 rev. B 02/99
HFA90NH40R
Ultrafast, Soft Recovery Diode
Features
• Reduced RFI and EMI
• Reduced Snubbing
• Extensive Characterization of
Recovery Parameters
LUG
TERMINAL
CATHODE
a
d
BASE ANODE
VR = 400V
VF(typ.)ƒ = 1V
IF(AV) = 90A
Qrr (typ.) = 420nC
IRRM(typ.) = 9.3A
trr(typ.) = 36ns
di(rec)M/dt (typ.)ƒ = 260A/µs
Description
HEXFREDTMdiodes 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.
HALF-PAK
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
Thermal - Mechanical Characteristics
Parameter
RthJC
RthCS
Wt
Junction-to-Case
Case-to-Sink, Flat, Greased Surface
Weight
Mounting Torque „
Terminal Torque
Vertical Pull
2 inch Lever Pull
Max.
400
148
72
600
1.4
260
104
-55 to +150
Units
V
A
mJ
W
°C
Min.
––––
––––
––––
15 (1.7)
30 (3.4)
––––
––––
Typ.
––––
0.15
26 (0.9)
––––
––––
––––
––––
Max.
0.48
––––
––––
25 (2.8)
40 (4.6)
80
40
Units
°C/W
K/W
g (oz)
lbf•in
(N•m)
lbf•in
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
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