ENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT GLASS PASSIVATED
SUPER FAST SILICON RECTIFIER
RANGE 50 - 1000 Volts CURRENT 3.0 Amperes
UCM31PT
THRU
UCM38PT
d applications
e
times for high efficiency
ded construction
s Underwriters Laboratory
fication 94V-0
nction
oldering guaranteed :
at terminals
0.245(6.22)
0.220(5.59)
(1)
(2)
SMC
0.125(3.17)
0.115(2.92)
DATA
0.280(7.11)
0.260(6.60)
0.012(0.305)
0.006(0.152)
0.103(2.62)
0.079(2.06)
0.060(1.52)
0.030(0.76)
0.008(0.203)(max)
molded plastic
ated, solderable per MIL-STD-750,
026
y cathode band
s, 0.093 gram
AND ELECTRICAL CHARACTERISTICS
emperature unless otherwise specified.
60 H
Z
, resistive or inductive load.
e current by 20%.
0.320(8.13)
0.305(7.75)
Dimensions in inches and (millimeters)
SMC
UNITS
Volts
Volts
Volts
Amps
A
= 25 C unless otherwise noted )
o
RATINGS
SYMBOL
V
RRM
V
RMS
V
DC
I
O
UCM31PT UCM32PT UCM33PT UCM34PT UCM35PT UCM36PT UCM37PT UCM38PT
everse Voltage
50
35
50
100
70
100
200
140
200
300
210
300
3.0
400
280
400
600
420
600
800
560
800
1000
700
1000
ge
Rectified Current T
L
= 100
o
C
8.3 ms single half sine-wave
I
FSM
100
Amps
(JEDEC method)
C
J
T
J
, T
STG
50
-65 to +150
30
pF
o
e (Note 1)
erature Range
C
STICS
( At T
A
= 25
o
C unless otherwise noted )
SYMBOL
V
F
o
CTERISTICS
UCM31PT UCM32PT UCM33PT UCM34PT UCM35PT UCM36PT UCM37PT UCM38PT
UNITS
Volts
uAmps
uAmps
ward Voltage at 3.0 A DC
@ T
A
= 25 C
@ T
A
= 100 C
o
0.95
10
1.27
1.75
ent
I
R
200
trr
35
45
nSec
e
Time (Note 2)
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
4P
M3
UC
T
M3
5
T~
1P
M3
UC
UC
10
T
J
=75
o
C
1.0
1.0
0.1
UC
M
.1
T
J
=25 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
o
C
UCM
31PT
~UCM
UCM
36PT
35PT
~UCM
38PT
36
o
PT
~U
CM
38
T
J
=100
o
C
PT
Pulse Width = 300uS
1% Duty Cycle
PT
