ARF648 FAST RECOVERY DIODE
FINAL SPECIFICATION feb 00 - ISSUE : 01
SWITCHING CHARACTERISTICS
FORWARD RECOVERY VOLTAGE
30
25
20
15
10
5
Tj = 150 °C
Tj = 25 °C
IF
VFR
VF
0
0
200
400
600
800
1000 1200
di/dt [A/µs]
REVERSE RECOVERY CURRENT
Tj=150°C
REVERSE RECOVERY CHARGE
Tj=150°C
1400
1200
1000
800
600
400
200
0
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
2000
2000 A
1000A
500 A
1000 A
500 A
0
0
100
200
300
400
0
100
200
300
400
di/dt [A/µs]
di/dt [A/µs]
IF
d i/d t
ta
ta = Irr / (di/dt)
tb = trr - ta
tb
Softness (s factor) s = tb / ta
Energy dissipation during recovery Er = Vr (Qrr - Irr ta /
Irr
Vr