UG8AT THRU UG8DT
ULTRAFAST EFFICIENT PLASTIC RECTIFIER
Reverse Voltage - 50 to 200 Volts Forward Current - 8.0 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 reverse
recovery time for high efficiency
Soft recovery characteristics
Excellent high temperature switching
Glass passivated chip junction
High temperature soldering guaranteed:
250C, 0.16" (4.06) from case for 10 seconds
MECHANICAL DATA
Case: JEDEC TO-220AC molded plastic body over
passivated chip
Terminals: Plated axial leads, solderable per MIL-STD-750,
Method 2026
Polarity: As marked
Mounting Position: Any
Mounting Torque: 5in. - lbs. max.
Weight: 0.064 ounce, 1.81 grams
MAXIMUM RATINGS AND CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified.
SYMBOLS
UG8AT
UG8BT
UG8CT
UG8DT
UNITS
Maximum repetitive peak reverse voltage
V
RRM
50
100
150
200
Volts
Maximum RMS voltage
V
RMS
35
70
105
140
Volts
Maximum DC blocking voltage
V
DC
50
100
150
200
Volts
Maximum average forward rectified current
at T
C
=100C
I
(AV)
8.0
Amps
Peak forward surge current
8.3 ms single half sine-wave superimposed
I
FSM
150.0
Amps
on rated load (JEDEC Method) at T
C
=100C
Maximum instantaneous forward voltage at 8.0
1.00
20A
V
F
1.20
Volts
5.0A, T
J
=150C
0.95
Maximum DC reverse current
T
A
=25C
10.0
at rated DC blocking voltage
T
A
=100C
I
R
300.0
A
Maximum reverse recovery time
(NOTE 1)
t
rr
20.0
ns
Maximum reverse recovery time
T
J
=25C
30.0
(NOTE 2)
T
J
=100C
t
rr
50.0
ns
Maximum recovered stored charge
T
J
=25C
20.0
(NOTE 2)
T
J
=100C
Q
rr
45.0
nC
Typical junction capacitance
(NOTE 3)
C
J
45.0
pF
Typical thermal resistance
(NOTE 4)
R
JC
4.0
C/W
Operating junction and storage temperature range
T
J
, T
STG
-55 to+150
C
NOTES:
(1) Reverse recovery test conditions: I
F
=0.5A, I
R
=1.0A, I
rr
=0.25A
(2) t
rr
and Q
rr
measured at I
F
=8.0A, V
R
=30V, di/dt=50A/
s, I
rr
=10% I
RM
for meaurement of t
rr
(3) Measured at 1.0 MH
Z
and applied reverse voltage of 4.0 Volts
(4) Thermal resistance from junction to case
10/23/98
0.154 (3.91)
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 (0.36)
0.110 (2.79)
0.100 (2.54)
1
2
1.148 (29.16)
1.118 (28.40)
0.105 (2.67)
0.095 (2.41)
0.410 (10.41)
0.390 (9.91)
0.635 (16.13)
0.625 (15.87)
0.560 (14.22)
0.530 (13.46)
PIN
PIN 1
PIN 2
CASE
0.415 (10.54) MAX.
0.370 (9.40)
0.360 (9.14)
TO-220AC
Dimensions in inches and (millimeters)
RATINGS AND CHARACTERISTIC CURVES UG8AT THRU UG8DT
0
25
50
75
100
125
150
175
0
2.0
4.0
6.0
8.0
10
12
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.01
0.1
1
10
100
0
25
50
75
100
125
150
175
0
10
20
30
40
50
60
1
10
100
10
100
1,000
0
20
40
60
80
100
0.01
0.1
1
10
100
1,000
0.01
0.1
1
10
100
0.1
1
10
100
FIG. 1 - FORWARD CURRENT DERATING
CURVE
CASE TEMPERATURE, C
A
VERA
GE FOR
W
ARD RECTIFIED CURRENT
,
AMPERES
FIG. 2 - MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
NUMBER OF CYCLES AT 60 Hz
PEAK FOR
W
ARD SURGE CURRENT
,
AMPERES
FIG. 3 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
FIG. 4 - TYPICAL REVERSE
CHARACTERISTICS
INST
ANT
ANEOUS FOR
W
ARD CURRENT
,
AMPERES
INST
ANT
ANEOUS REVERSE LEAKA
GE CURRENT
,
MICR
O
AMPERES
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
PERCENT OF RATED PEAK REVERSE
VOLTAGE, %
FIG. 5 - REVERSE SWITCHING
CHARACTERISTICS
RECO
VERED ST
ORED CHARGE/REVERSE
RECO
VER
Y TIME
nC/ns
JUNCTION TEMPERATURE, C
FIG. 6 - TYPICAL JUNCTION CAPACITANCE
JUNCTION CAP
A
CIT
ANCE, pF
REVERSE VOLTAGE, VOLTS
T
C
=100
C
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
T
J
=100C
T
J
=25C
T
J
=25C
PULSE WIDTH=300
s
1% DUTY CYCLE
T
J
=25C
f=1.0 MH
Z
Vsig=50mVp-p
di/dt=20A/
s
di/dt=150A/
s
di/dt=100A/
s
di/dt=50A/
s
di/dt= 150A/
s
di/dt=20A/
s
di/dt=50A/
s
di/dt=100A/
s
T
J
=125C
I
F
=4.0A
V
R
=30V
t
rr
Q
rr
RESISTIVE OR INDUCTIVE LOAD
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