
UG18ACT THRU UG18DCT
ULTRAFAST EFFICIENT PLASTIC RECTIFIER
Reverse Voltage -
50 to 200 Volts
Forward Current -
18.0 Amperes
FEATURES
Plastic package has Underwriters Laboratories
Flammability Classification 94V-0
Ideally suited for use in very
high frequency switching
power supplies, inverters
and as a free wheeling diode
Ultrafast 25 nanosecond reverse recovery times
Soft recovery characteristics
Excellent high temperature switching
Glass passivated junctions
High temperature soldering guaranteed:
250°C, 0.16” (4.06mm) case for 10 seconds
MECHANICAL DATA
Case:
JEDEC TO-220AB molded plastic body over
passivated chips
Terminals:
Plated leads solderable per MIL-STD-750,
Method 2026
Polarity:
As marked
Mounting Position:
Any
Mounting Torque:
5 in. - lbs. max.
Weight:
0.08 ounce, 2.24 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
SYMBOLS
V
RRM
V
RMS
V
DC
I
(AV)
UG18ACT
50
35
50
UG18BCT
100
70
100
UG18CCT
150
105
150
18.0
UG18DCT
200
140
200
UNITS
Volts
Volts
Volts
Amps
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current at T
C
=105°C
Peak forward surge current
8.3ms single half sine-wave superimposed
on rated load (JEDEC Method) per leg at T
C
=105°C
Maximum instantaneous forward voltage per leg at 9.0A
I
FSM
175.0
Amps
1.10
1.20
0.95
10.0
300.0
20.0
30.0
50.0
20.0
45.0
30.0
4.0
20A
5.0A, T
J
=100°C
T
A
=25°C
T
A
=100°C
V
F
Volts
Maximum DC reverse current
at rated DC blocking voltage per leg
Maximum reverse recovery time per leg
(NOTE 1)
Maximum reverse recovery time per leg T
J
=25°C
(NOTE 2)
Maximum recovered stored charge per leg T
J
=25°C
(NOTE 2)
Typical junction capacitance per leg
(NOTE 3)
Typical thermal resistance per leg
(NOTE 4)
Operating junction and storage temperature range
I
R
μ
A
t
rr
ns
T
J
=100°C
t
rr
ns
T
J
=100°C
Q
rr
nC
C
J
pF
R
Θ
JC
T
J
, T
STG
°C/W
°C
-65 to +150
NOTES:
(1) Reverse recovery test conditions: I
F
=0.5A, I
R
=1.0A, Irr=0.25A
(2) t
rr
and Q
rr
measured at: I
F
=9.0A, V
R
=30V, di/dt=50A/
μ
s, I
rr=
10% I
RM
(3) Measured at 1.0 MH
Z
and applied reverse voltage of 4.0 Volts
(4) Thermal resistance from junction to case per leg
4/98
0.415 (10.54) MAX.
0.148 (3.74)DIA.
0.113 (2.87)
0.103 (2.62)
0.185 (4.70)
0.175 (4.44)
0.055 (1.39)
0.045 (1.14)
0.145 (3.68)
0.135 (3.43)
0.350 (8.89)
0.330 (8.38)
0.160 (4.06)
0.140 (3.56)
0.037 (0.94)
0.027 (0.68)
0.205 (5.20)
0.195 (4.95)
0.560 (14.22)
0.530 (13.46)
0.022 (0.56)
0.014 (0.35)
0.110 (2.79)
0.100 (2.54)
PIN
2
1
3
PIN 1
PIN 3
CASE
1.148 (29.16)
1.118 (28.40)
0.105 (2.67)
0.095 (2.41)
0.410 (10.41)
0.390 (9.91)
0.105 (2.67)
0.095 (2.41)
0.635 (16.13)
0.625 (15.87)
0.560 (14.22)
0.530 (13.46)
PIN 2
0.370 (9.40)
0.360 (9.14)
Dimensions in inches and (millimeters)
TO-220AB