UG18ACT THRU UG18DCT
ULTRAFAST EFFICIENT PLASTIC RECTIFIER
Reverse Voltage - 50 to 200 Volts
Forward Current - 18.0 Amperes
TO-220AB
FEATURES
♦ Plastic package has Underwriters Laboratories
Flammability Classification 94V-0
♦ Ideally suited for use in very
0.185 (4.70)
0.415 (10.54) MAX.
0.175 (4.44)
0.370 (9.40)
0.360 (9.14)
0.154 (3.91)
0.148 (3.74)
0.055 (1.39)
0.045 (1.14)
DIA.
high frequency switching
power supplies, inverters
0.113 (2.87)
0.103 (2.62)
0.145 (3.68)
0.135 (3.43)
and as a free wheeling diode
0.560 (14.22)
0.530 (13.46)
♦ Ultrafast 25 nanosecond reverse recovery times
♦ Soft recovery characteristics
♦ Excellent high temperature switching
♦ Glass passivated junctions
0.410 (10.41)
0.390 (9.91)
0.350 (8.89)
0.330 (8.38)
0.635 (16.13)
0.625 (15.87)
PIN
1.148 (29.16)
1.118 (28.40)
2
1
3
0.110 (2.79)
0.100 (2.54)
0.160 (4.06)
0.140 (3.56)
0.560 (14.22)
0.530 (13.46)
♦ High temperature soldering guaranteed:
250°C, 0.16” (4.06mm) case for 10 seconds
0.105 (2.67)
0.095 (2.41)
0.037 (0.94)
0.027 (0.68)
MECHANICAL DATA
Case: JEDEC TO-220AB molded plastic body over
passivated chips
Terminals: Plated leads solderable per MIL-STD-750,
Method 2026
0.022 (0.56)
0.014 (0.35)
0.105 (2.67)
0.095 (2.41)
0.205 (5.20)
0.195 (4.95)
PIN 2
PIN 1
PIN 3
CASE
Polarity: As marked
Mounting Position: Any
Dimensions in inches and (millimeters)
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
VRRM
VRMS
VDC
UG18ACT
50
UG18BCT
100
UG18CCT
150
UG18DCT
200
UNITS
Volts
Volts
Volts
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
35
50
70
100
105
150
140
200
Maximum average forward rectified current at TC=105°C
I(AV)
18.0
Amps
Peak forward surge current
8.3ms single half sine-wave superimposed
on rated load (JEDEC Method) per leg at TC=105°C
IFSM
175.0
Amps
Maximum instantaneous forward voltage per leg at 9.0A
1.10
1.20
0.95
20A
5.0A, TJ=100°C
VF
Volts
Maximum DC reverse current
at rated DC blocking voltage per leg
TA=25°C
TA=100°C
10.0
300.0
IR
trr
trr
µA
ns
ns
Maximum reverse recovery time per leg (NOTE 1)
20.0
Maximum reverse recovery time per leg TJ=25°C
30.0
50.0
TJ=100°C
Maximum recovered stored charge per leg TJ=25°C
TJ=100°C
(NOTE 2)
20.0
45.0
Qrr
nC
(NOTE 2)
Typical junction capacitance per leg (NOTE 3)
Typical thermal resistance per leg (NOTE 4)
Operating junction and storage temperature range
CJ
30.0
4.0
pF
°C/W
°C
RΘJC
TJ, TSTG
-65 to +150
NOTES: (1) Reverse recovery test conditions: IF=0.5A, IR=1.0A, Irr=0.25A
(2) trr and Qrr measured at: IF=9.0A, VR=30V, di/dt=50A/µs, Irr=10% IRM
(3) Measured at 1.0 MHZ and applied reverse voltage of 4.0 Volts
(4) Thermal resistance from junction to case per leg
4/98