ARF774 FAST RECOVERY DIODE
FINAL SPECIFICATION June 17 - Issue: 5
FORWARD RECOVERY VOLTAGE
60
Tj = 125 °C
50
40
Tj=25°C
30
IF
VFR
20
10
0
VF
0
200
400
600
800
1000 1200
di/dt [A/µs]
REVERSE RECOVERY CURRENT
Tj = 140 °C
REVERSE RECOVERY CHARGE
Tj = 140 °C
3000
2500
2000
1500
1000
500
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
1000 A
1000 A
500 A
500 A
250 A
250A
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 = Irr / (di/dt)
Softness (s factor) s = tb / ta
Energy dissipation during recovery Er = Vr ·(Qrr - Irr ·ta / 2)
tb = trr - ta
ta
tb
Irr
Vr
POSEICO [ POWER SEMICONDUCTORS ]
