RATING CHARACTERISTIC CURVES ( UCM31PT THRU UCM38PT )
FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC
50
NONINDUCTIVE
10
NONINDUCTIVE
trr
+0.5A
(-)
0
PULSE
GENERATOR
(NOTE 2)
1
NON-
INDUCTIVE
OSCILLOSCOPE
(NOTE 1)
(+)
-1.0A
NOTES: 1. Rise Time = 7 ns max. Input Impedance =
1 megohm. 22 pF.
2. Rise Time = 10 ns max. Source Impedlance=
50 ohms.
1cm
SET TIME BASE FOR
10 nS/cm
-0.25A
AVERAGE FORWARD CURRENT, ( A )
FIG. 2 - TYPICAL FORWARD
CURRENT DERATING CURVE
3.0
2.5
2.0
1.5
1.0
0.5
0
0
Single Phase
Half Wave 60Hz
Resistive or
Inductive Load
(+)
25 Vdc
(approx)
(-)
D.U.T
25 50 75 100 125 150 175
LEAD TEMPERATURE (
O
C )
FIG. 3 - TYPICAL REVERSE CHARACTERISTICS
100
INSTANTANEOUS FORWARD CURRENT, ( A )
INSTANTANEOUS REVERSE CURRENT, (uA)
10
FIG. 4 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
CM
34
PT
M3
5
PT
UC
T
J
=75 C
o
1.0
0.1
.1
T
J
=25
o
C
T
J
=25 C
o
.01
.01
0
20
40
60
80
100
120
140
PERCENT OF RATED PEAK REVERSE VOLTAGE, ( % )
.001
0
.2
.4
.6
.8
1.0
1.2 1.4
1.6
INSTANTANEOUS FORWARD VOLTAGE, ( V )
1.8
FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
PEAK FORWARD SURGE CURRENT, ( A )
140
JUNCTION CAPACITANCE, ( pF )
120
100
80
60
40
20
0
1
2
5
10
20
NUMBER OF CYCLES AT 60 Hz
50
100
8.3ms Single Half Sine-Wave
(JEDEC Method)
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
200
100
60
40
20
10
6
4
2
1
.1
.2
.4
1.0
2
4
10
20
REVERSE VOLTAGE, ( V )
40
100
T
J
=25 C
o
UCM
31PT
UCM
36PT
~UCM
35PT
~UCM
38PT
UC
M
36
PT
10
1.0
~U
CM
M3
1
UC
38
T
J
=100
o
C
PT
Pulse Width = 300uS
1% Duty Cycle
~U
PT
CHENMKO [ CHENMKO ENTERPRISE CO. LTD. ]
