20GF120BRD/SRD
MIN TYP MAX
70 85
70
160
255
255
712
12 20
660
1640
15
20
245
160
UNIT
nS
Amps
nC
Volts
A/µS
Characteristic/ Test Conditions
Reverse Recovery Time, IF = 1.0A, diF/dt = -15A/µS, VR = 30V, TJ = 25°C
Reverse Recovery Time TJ = 25°C
IF = 20A, diF/dt = -240 A/ µS, VR = 650V TJ = 100°C
Forward Recovery Time TJ = 25°C
IF = 20A, diF/dt = 240 A/ µS, V R = 650V TJ = 100°C
Reverse Recovery Current TJ = 25°C
IF = 20A, diF/dt = -240 A/ µS, VR = 650V TJ = 100°C
Recovery Charge TJ = 25°C
IF = 20A, diF/dt = -240 A/ µS, VR = 650V TJ = 100°C
Forward Recovery Voltage TJ = 25°C
IF = 20A, diF/dt = 240 A/ µS, V R = 650V TJ = 100°C
Rate of Fall of Recovery Current TJ = 25°C
IF = 20A, diF/dt = -240A/µS, VR = 650V (See Figure 18) TJ = 100°C
DYNAMIC CHARACTERISTICS (FRED)
Symbol
trr1
trr2
trr3
tfr1
tfr2
IRRM1
IRRM2
Qrr1
Qrr2
Vfr1
Vfr2
diM/dt
PEARSON 411
CURRENT
TRANSFORMER
0.5 IRRM
di
F
/dt Adjust
30µH
D.U.T.
+15v
-15v
0v
Vr
4
3
1
2
5
5
0.75 IRRM
trr/Qrr
Waveform
Zero
6
1
2
3
4
6
di
F
/dt - Current Slew Rate, Rate of Forward
Current Change Through Zero Crossing.
I
F
- Forward Conduction Current
I
RRM
- Peak Reverse Recovery Current.
trr - Reverse Recovery Time Measured from Point of I
F
Qrr - Area Under the Curve Defined by I
RRM
and trr.
diM/dt - Maximum Rate of Current Change During the Trailing Portion of trr.
Current Falling Through Zero to a Tangent Line
{
diM/dt
}
Extrapolated Through Zero Defined by 0.75 and 0.50 I
RRM
.
6
Figure 17, Diode Reverse Recovery Test Circuit and Waveforms
Figure 18, Diode Reverse Recovery Waveform and Definitions
Qrr = 1/2
(
trr . I
RRM)
052-6252 Rev C 4-2003