General Semiconductor UG8AT, UG8DT, UG8CT, UG8BT Datasheet

UG8A T THRU UG8DT

ULTRAFAST EFFICIENT PLASTIC RECTIFIER

Reverse Volta ge - 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:

250°C, 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 T orque: 5in. - lbs. max.
Weight: 0.064 ounce, 1.81 grams

MAXIMUM RATINGS AND CHARACTERISTICS

Ratings at 25°C 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

=100°C

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 TC=100°C
Maximum instantaneous forward voltage at 8.0 1.00

20A

V

F

1.20

Volts

5.0A, TJ=150°C 0.95

Maximum DC reverse current T

A

=25°C 10.0

at rated DC blocking voltage TA=100°C

I

R

300.0

µA

Maximum reverse recovery time

(NOTE 1)

t

rr

20.0 ns

Maximum reverse recovery time T

J

=25°C 30.0

(NOTE 2)

TJ=100°C

t

rr

50.0

ns

Maximum recovered stored charge T

J

=25°C 20.0

(NOTE 2)

TJ=100°C

Q

rr

45.0

nC

Typical junction capacitance

(NOTE 3)

C

J

45.0 pF

Typical ther mal resistance

(NOTE 4)

R

ΘJC

4.0 °C/W

Operating junction and storage temperature range T

J

, T

STG

-55 to+150 °C

NOTES:

(1) Reverse recovery test conditions:IF=0.5A, IR=1.0A, Irr=0.25A
(2) t

rr

and Qrrmeasured at IF=8.0A, VR=30V, di/dt=50A/µs, Irr=10% I

RM

for meaurement of t

rr

(3) Measured at 1.0 MHZand applied reverse voltage of 4.0 Volts
(4) Thermal resistance from junction to case

10/23/98

TO-220AC

Dimensions in inches and (millimeters)

0.160 (4.06)

0.140 (3.56)

0.415 (10.54) MAX.

0.370 (9.40)

0.360 (9.14)

0.410 (10.41)

0.390 (9.91)

PIN

12

0.154 (3.91)

0.148 (3.74)

0.113 (2.87)

0.103 (2.62)

0.635 (16.13)

0.625 (15.87)

0.185 (4.70)

0.175 (4.44)

DIA.

0.145 (3.68)

0.135 (3.43)

0.350 (8.89)

0.330 (8.38)

1.148 (29.16)

1.118 (28.40)

0.560 (14.22)

0.530 (13.46)

0.055 (1.39)

0.045 (1.14)

0.560 (14.22)

0.530 (13.46)

0.110 (2.79)

0.100 (2.54)

0.105 (2.67)

0.095 (2.41)

0.037 (0.94)

0.027 (0.68)

0.205 (5.20)

0.195 (4.95)

0.022 (0.56)

0.014 (0.36)

PIN 1

PIN 2

CASE

RATINGS AND CHARACTERISTIC CURVES UG8AT THRU UG8DT

FIG. 1 - FORWARD CURRENT DERATING

CURVE

CASE TEMPERATURE, °C

AVERAGE FORWARD RECTIFIED CURRENT,

AMPERES

FIG. 2 - MAXIMUM NON-REPETITIVE PEAK

FORWARD SURGE CURRENT

NUMBER OF CYCLES AT 60 Hz

PEAK FORWARD SURGE CURRENT,

AMPERES

FIG. 3 - TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

FIG. 4 - TYPICAL REVERSE

CHARACTERISTICS

INSTANTANEOUS FORWARD CURRENT,

AMPERES

INSTANTANEOUS REVERSE LEAKAGE CURRENT,

MICROAMPERES

INSTANTANEOUS FORWARD VOLTAGE,

VOLTS

PERCENT OF RATED PEAK REVERSE

VOLTAGE, %

FIG. 5 - REVERSE SWITCHING

CHARACTERISTICS

RECOVERED STORED CHARGE/REVERSE

RECOVER Y TIME nC/ns

JUNCTION TEMPERATURE, °C

FIG. 6 - TYPICAL JUNCTION CAPACITANCE

JUNCTION CAPACITANCE, pF

REVERSE VOLTAGE, V OLTS

TC=100°C

8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)

TJ=100°C

TJ=25°C

TJ=25°C
PULSE WIDTH=300µs
1% DUTY CYCLE

TJ=25°C
f=1.0 MH

Z

Vsig=50mVp-p

di/dt=

20A/µs

di/dt=

150A/µs

di/dt=

100A/µs

di/dt=

50A/µs

di/dt= 150A/µs

di/dt=20A/µs

di/dt=50A/µs

di/dt=100A/µs

TJ=125°C

IF=4.0A
V

R

=30V

t

rr

Q

rr

RESISTIVE OR INDUCTIVE LOAD

12

10

8.0

6.0

4.0

2.0

0

0 25 50 75 100 125 150 175

100

10

1

0.1

1,000

100

10

1,000

100

0.1

1

10

10

1

100

0.01

0.4

0.6

60

50

40

30

20

10

0

0 25 50 75 100 125 150 175

0.8

1.0

1.2

1.4

1.6

0.01
0

20

40

60

80

100

100

10

1

0.1

0.01

0.1

1

10

100