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HFA180NH40R 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 -2.451 rev. B 03/99
HFA180NH40R
Ultrafast, Soft Recovery Diode
LUG
TERMINAL
CATHODE
a
d
BASE ANODE
VR = 400V
VF(typ.)ƒ = 1.1V
IF(AV) = 180A
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.
HALF-PAK
Absolute Maximum Ratings (per Leg)
VR
IF @ TC = 25°C
IF @ TC = 100°C
IFSM
EAS
PD @ TC = 25°C
PD @ TC = 100°C
TJ
TSTG
Parameter
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
280
138
1200
1.4
521
208
-55 to +150
Units
V
A
mJ
W
°C
Thermal - Mechanical Characteristics
Parameter
Min.
Typ.
Max. Units
RthJC
RthCS
Wt
Junction-to-Case
Case-to-Sink, Flat, Greased Surface
Weight
––––
––––
––––
––––
0.15
26 (0.9)
0.20
––––
––––
°C/W
K/W
g (oz)
Mounting Torque „
Terminal Torque
15 (1.7)
30 (3.4)
––––
––––
25 (2.8) lbf•in
40 (4.6) (N•m)
Vertical Pull
2 inch Lever Pull
––––
––––
––––
––––
80
lbf•in
40
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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