HFA120MD40D

PD-2.508 rev. A 12/98

5

2

R(RATED)

V

DECAY

TIME

Fig. 11 - Avalanche Test Circuit and Waveforms

Fig. 10 - Reverse Recovery Waveform and

Definitions

Fig. 9 - Reverse Recovery Parameter Test

Circuit

0.5

di(rec)M/dt

5

4

3

2

0

1

di /dt

f

through zero crossing

3. trr - Reverse recovery time measured

from zero crossing point of negative

extrapolated to zero current

REVERSE RECOVERY CIRCUIT

IRFP250

D.U.T.

L = 70µH

V

= 200V

R

0.01

Ω

G

D

S

dif/dt

ADJUST

CURRENT

MONITOR

HIGH-SPEED

SWITCH

DUT

Rg = 25 ohm

+

FREE-WHEEL

DIODE

Vd = 50V

L = 100µH

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Fax-On-Demand: +44 1883 733420

Data and specifications subject to change without notice.

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