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GLASS PASSIVATED SUPER FAST RECTIFIER

VOLTAGE 200 Volts   CURRENT 4.0 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)

SF44

DO-201AD

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: Molded plastic
* Epoxy:  Device has UL flammability classification 94V-O
* Lead: MIL-STD-202E method 208C guaranteed
* Mounting position: Any
* Weight: 1.18 grams

2005-8

REV:A

RATINGS

Maximum Recurrent Peak Reverse Voltage

Maximum RMS Volts

Maximum DC Blocking Voltage

Maximum Average Forward Current
at T

A

 = 55

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

4.0

125

50

-55 to + 175

Amps

pF

0

C

UNITS

SF44

200

140

200

at Rated DC Blocking Voltage

CHARACTERISTICS

Maximum Reverse Recovery Time (Note 1)

V

F

SYMBOL

I

R

trr

UNITS

0.95

5.0

uAmps

nSec

Maximum DC Reverse Current

Maximum Forward Voltage at 4.0A DC

Volts

@T

= 25

o

C

@T

=150

o

C

SF44

50

20

.220 (5.6)

.197 (5.0)

DIA.

.052 (1.3)
.048 (1.2)

DIA.

1.0 (25.4)

MIN.

.335 (8.5)

.375 (9.5)

1.0 (25.4)

MIN.

sf44-html.html
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RECTRON

RATING AND CHARACTERISTIC CURVES ( SF44 )

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 (     )

7.0

6.0

5.0

3.0

4.0

2.0

0

25 50 75 100 125 150 175

1.0

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

.001

.01

.1

1.0

10

FORWARD CHARACTERISTICS    

Pulse Width = 300uS
1% Duty Cycle

TJ = 25