FMS SF31, SF32, SF33, SF34, SF35 User Manual

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3.0 AMP SUPER FAST RECTIFIERS

FEATURES

SF31 THRU SF37

VOLTAGE RANGE

50 to 600 Volts

CURRENT

3.0 Amperes

* Low forward voltage drop
* High current capability
* High reliability
* High surge current capability
* Good for switching mode application

.220(5.6)
.197(5.0)

DIA.

DO-27

MECHANICAL DATA

* Case: Molded plastic
* Epoxy: UL 94V-0 rate flame retardant
* Lead: Axial leads, solderable per MIL-STD-202,
method 208 guranteed
* Polarity: Color band denotes cathode end
* Mounting position: Any

* Weight: 1.10 grams

.052(1.3)
.048(1.2)

DIA.

Dimensions in inches and (millimeters)

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Rating 25 C ambient temperature uniess otherwies specified.
Single phase half wave, 60Hz, resistive or inductive load.
For capacitive load, derate current by 20%.

TYPE NUMBER

Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current

.375"(9.5mm) Lead Length at Ta=55 C
Peak Forward Surge Current, 8.3 ms single half sine-wave

superimposed on rated load (JEDEC method)

Maximum Instantaneous Forward Voltage at 3.0A
Maximum DC Reverse Current Ta=25 C

at Rated DC Blocking Voltage Ta=100 C

Maximum Reverse Recovery Time (Note 1)

Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range TJ, TSTG

SF31 SF32 SF33 SF34 SF35 SF36 SF37 UNITS

50 100 150 200 300 400 600 V
35 70 105 140 210 280 420
50 100 150 200 300 400 600 V

3.0

125

0.95

5.0

50

35
50

-65 +150

1.0(25.4)
MIN.

.375(9.5)
.285(7.2)

1.0(25.4)
MIN.

1.25

1.50

V

A

A
V

mA
mA

nS

pF

C

NOTES:

1. Reverse Recovery Time test condition: IF=0.5A, IR=1.0A, IRR=0.25A

2. Measured at 1MHz and applied reverse voltage of 4.0V D.C.

RATING AND CHARACTERISTIC CURVES (SF31 THRU SF37)

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

50

W

NONINDUCTIVE

(+)
25Vdc

(approx.)
( )

NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF.

2. Rise Time= 10ns max., Source Impedance= 50 ohms.

D.U.T.

1

W

NON­INDUCTIVE

W

10
NONINDUCTIVE

OSCILLISCOPE
(NOTE 1)

FIG.3-TYPICAL FORWARD

( )

PULSE
GENERATOR
(NOTE 2)

(+)

+0.5A

0

-0.25A

-1.0A

trr

|
|
|
|
|
|
|
|

1cm

SET TIME BASE FOR
50 / 10ns / cm

FIG.4-TYPICAL REVERSE

CHARACTERISTICS

50

10

3.0

1.0

4

36

31~SF3

SF

F

~

S

35

37

F

F

S

S

50

10

3.0

1.0

FIG.2-TYPICAL FORWARD CURRENT

DERATING CURVE

3.0

2.5

2.0

1.5

1.0

Single Phase
Half Wave 60Hz
Resistive Or Inductive Load

0.375"(9.5mm) Lead Length

0.5

AVERAGE FORWARD CURRENT,(A)

0

0 25 50 75 100 125 150 175

AMBIENT TEMPERATURE,( C)

CHARACTERISTICS

Tj=100 C

0.1

Pulse Width 300us
1% Duty Cycle

INSTANTANEOUS FORWARD CURRENT,(A)

.01

.4 .6 .8 1.0 1.2 1.4 1.6 1.8

FORWARD VOLTAGE,(V)

FIG.5-MAXIMUM NON-REPETITIVE FORWARD

SURGE CURRENT

125

100

75

50

25

PEAK FORWARD SURGE CURRENT,(A)

0

1 10 5

NUMBER OF CYCLES AT 60Hz

Tj=25 C

Tj=25 C

8.3ms Single Half
Sine Wave
JEDEC method

50

100

0.1

Tj=25 C

REVERSE LEAKAGE CURRENT, (mA)

.01

0

20 40 60 80 100 120 140

PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)

FIG.6-TYPICAL JUNCTION CAPACITANCE

175

150

125

100

75

50

JUNCTION CAPACITANCE,(pF)

25

0

.01 .05 .1 .5 1 5 10 50 100

REVERSE VOLTAGE,(V)