Vr
+18V
0V
D.U.T.
30µH
di
F
/dt Adjust
APT20M36BLL
APT60D20LCT(G)
trr/Qrr
Waveform
PEARSON 2878
CURRENT
TRANSFORMER
Figure 9. Diode Test Circuit
1
2
3
4
I
F
- Forward Conduction Current
di
F
/dt - Rate of Diode Current Change Through Zero Crossing.
I
RRM
- Maximum Reverse Recovery Current.
Zero
1
4
5
3
2
trr - Reverse
Recovery
Time, measured from zero crossing where diode
current goes from positive to negative, to the point at which the straight
line through I
RRM
and 0.25 I
RRM
passes through zero.
Qrr - Area Under the Curve Defined by I
RRM
and trr.
0.25 IRRM
5
Figure 10, Diode Reverse Recovery Waveform and Definitions
TO-264 (LCT) Package Outline
e1 SAC: Tin, Silver, Copper
4.60 (.181)
5.21 (.205)
1.80 (.071)
2.01 (.079)
19.51 (.768)
20.50 (.807)
3.10 (.122)
3.48 (.137)
5.79 (.228)
6.20 (.244)
Common Cathode
25.48 (1.003)
26.49 (1.043)
2.29 (.090)
2.69 (.106)
19.81 (.780)
21.39 (.842)
2.29 (.090)
2.69 (.106)
4-2005
Anode 1
Common Cathode
Anode 2
053-2007 Rev C
0.48 (.019)
0.84 (.033)
2.59 (.102)
3.00 (.118)
0.76 (.030)
1.30 (.051)
2.79 (.110)
3.18 (.125)
5.45 (.215) BSC
2-Plcs.
Dimensions in Millimeters and (Inches)
APT’s products are covered by one or more of U.S.patents 4,895,810 5,045,903 5,089,434 5,182,234 5,019,522
5,262,336 6,503,786 5,256,583 4,748,103 5,283,202 5,231,474 5,434,095 5,528,058 and foreign patents. US and Foreign patents pending. All Rights Reserved.
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