GLASS PASSIVATED SUPER FAST RECTIFIER

VOLTAGE RANGE  50 to 200 Volts   CURRENT 8.0 Amperes

RECTRON

SEMICONDUCTOR

TECHNICAL  SPECIFICATION

FEATURES

* High  reliability
* Low  leakage
* Low forward voltage
* High current capability
* Super fast switching speed
* High surge capability
* Good for switching mode circuit

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Ratings at 25 

o

C ambient temperature unless otherwise specified.

Single phase, half wave, 60 Hz, resistive or inductive load.

For capacitive load, derate current by 20%.

ELECTRICAL CHARACTERISTICS (At T

A

 = 25

o

C unless otherwise noted)

USF81

THRU

USF84

TO-220A

MAXIMUM RATINGS (At T

A

 = 25

o

C unless otherwise noted)

NOTES : 1. Test Conditions: I

F

=0.5A, I

R

=-1.0A, I

RR

=-0.25A.

2. Measured at 1 MH

Z

 and applied reverse voltage of 4.0 volts. 

Dimensions in inches and (millimeters)

MECHANICAL DATA

* Case:  TO-220  Molded plastic
* Epoxy:  Device has UL flammability classification 94V-O
* Lead: MIL-STD-202E method 208C guaranteed
* Mounting position: Any
* Weight: 2.24 grams

2002-7

RATINGS

Maximum Recurrent Peak Reverse Voltage

Maximum RMS Volts

Maximum DC Blocking Voltage

Maximum Average Forward Current
at T

C

 = 100

o

C

Peak Forward Surge Current I

FM

 (surge):8.3 ms single half

sine-wave superimposed on rated load (JEDEC method)

Typical Junction Capacitance (Note 2)

Operating and Storage Temperature Range

SYMBOL

V

RRM

V

DC

I

O

I

FSM

C

J

T

J

, T

STG

V

RMS

Volts

Volts

Volts

Amps

8.0

150

45

-55 to + 150

Amps

pF

0

C

UNITS

USF81

USF84

USF82

USF83

50

200

100

150

35

140

70

105

50

200

100

150

at Rated DC Blocking Voltage

CHARACTERISTICS

Maximum Reverse Recovery Time (Note 1)

V

F

SYMBOL

I

R

trr

UNITS

0.95

10

uAmps

nSec

Maximum DC Reverse Current

Maximum Forward Voltage at 8.0A DC

Volts

@T

A 

= 25

o

C

@T

A 

=100

o

C

USF81

USF84

USF82

USF83

500

20

.153 (3.9)

.413 (10.5)

.108

.051

.04MAX.

.374 (9.5)

(2.75)

(1.3)

(1.0)

.148 (3.8)

.053 (1.3)
.047 (1.2)

.270 (6.9)

.610 (15.5)

.583 (14.8)

.102 (2.6)
.091 (2.3)

.583 (14.8)

.157

.126

(4.0)

(3.2)

.531 (13.5)

.022 (0.56)

.014 (0.36)

.230 (5.8)

.187 (4.7)

.146 (3.7)

.035 (0.9)
.028 (0.7)

RECTRON

RATING AND CHARACTERISTIC CURVES ( USF81 THRU USF84 )

FIG. 6 - TYPICAL JUNCTION CAPACITANCE

JUNCTION CAPACITANCE, (pF)

REVERSE VOLTAGE, ( V )

200

100

60

40

20

10

6
4

2

1

.1

.2

.4

1.0

2

4

10

20 40

100

TJ = 25

FIG. 1 - TEST CIRCUIT DIAGRAM  AND REVERSE RECOVERY TIME CHARACTERISTIC

50
NONINDUCTIVE

10
NONINDUCTIVE

D.U.T

25 Vdc
(approx)

( - )

( - )

( + )

( + )

1
NON-
INDUCTIVE

OSCILLOSCOPE

(NOTE 1)

PULSE

GENERATOR

(NOTE 2)

NOTES: 1  Rise Time = 7ns max. Input Impedance =

    1 megohm. 22pF.
2. Rise Time = 10ns max. Source Impedance = 
    50 ohms.

trr

+0.5A

0

-0.25A

-1.0A

1cm

SET TIME BASE FOR
10 ns/cm

FIG. 2 - TYPICAL FORWARD
CURRENT DERATING CURVE

AVERAGE FORWARD CURENT, (A)

AMBIENT TEMPERATURE (     )

14

12

10

6

8

4

0

25 50 75 100 125 150 175

2

Single Phase
Half Wave 60Hz
Resistive or
Inductive Load

FIG. 3 - TYPICAL REVERSE CHARACTERISTICS

INSTANTANEOUS REVERSE CURRENT, (uA)

PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)

TJ = 25

TJ = 100

TJ = 150

100

10

1.0

.1

.01

40

0

20

60

80

100

120

140

FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT

PEAK FORWARD SURGE CURRENT, (A)

NUMBER OF CYCLES AT 60Hz

175

150

125

100

75

50

25

0

1

2

5

10

20

50

100

8.3ms Single Half Sine-Wave
(JEDEC Method)

INSTANTANEOUS FORWARD VOLTAGE, (V)

FIG. 4 - TYPICAL INSTANTANEOUS

INSTANTANEOUS FORWARD CURRENT, (A)

0

.2

.4

.6

.8

1.0

1.2

1.4

.01

.1

1

10

100

FORWARD CHARACTERISTICS    

Pulse Width = 300uS
1% Duty Cycle

TJ = 25