Vr
+18V
0V
D.U.T.
30µH
di
F
/dt Adjust
APT40GT60BR
APT40DQ60B(G)_S(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
6
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.
di
M
/dt - Maximum Rate of Current Increase During the Trailing Portion of trr.
0.25 IRRM
Slope = di
M
/dt
5
6
Figure 10, Diode Reverse Recovery Waveform and Definitions
TO-247 Package Outline
e1 SAC: Tin, Silver, Copper
4.69 (.185)
5.31 (.209)
1.49 (.059)
2.49 (.098)
6.15 (.242) BSC
15.49 (.610)
16.26 (.640)
5.38 (.212)
6.20 (.244)
D PAK Package Outline
e3 100% Sn
4.90 (.193)
5.10 (.201)
1.45 (.057)
1.60 (.063)
15.85 (.624)
16.05(.632)
13.30 (.524)
13.60(.535)
3
Cathode
(Heat Sink)
1.00 (.039)
1.15(.045)
Cathode
20.80 (.819)
21.46 (.845)
3.50 (.138)
3.81 (.150)
18.70 (.736)
19.10 (.752)
0.40 (.016)
0.65 (.026)
12.40 (.488)
12.70 (.500)
8-2005
4.50 (.177) Max.
0.40 (.016)
0.79 (.031)
1.65 (.065)
2.13 (.084)
1.01 (.040)
1.40 (.055)
19.81 (.780)
20.32 (.800)
0.020 (.001)
0.250 (.010)
2.70 (.106)
2.90 (.114)
1.15 (.045)
1.45 (.057)
1.20 (.047)
1.90 (.075) 1.40 (.055)
2.10 (.083)
5.45 (.215) BSC
(2 Plcs.)
2.40 (.094)
2.70 (.106)
(Base of Lead)
053-4212 Rev C
Anode
2.21 (.087)
2.59 (.102)
Heat Sink (Cathode)
and Leads
are Plated
Cathode
10.90 (.430) BSC
Dimensions in Millimeters and (Inches)
Anode
Cathode
Dimensions in Millimeters (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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