Datasheet SF28G Specification

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SF21 THRU SF28

2.0 AMPS. Super Fast Rectifiers

Features

 Low forward voltage drop
 High current capability
 High reliability
 High surge current capability

Mechanical Data

 Cases: Molded plastic
 Epoxy: UL 94V-O rate flame retardant
 Lead: Axial leads, solderable per

MIL-STD-202, Method 208 guaranteed

 Polarit
 High temperature soldering guaranteed:

260

: Color band denotes cathode end

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C/10 seconds/.375”,(9.5mm) lead

lengths at 5 lbs., (2.3kg) tension

 Weight: 0.40 gram

Dimen s io ns in inche s a nd (millime t e rs)

Maximum Ratings and Electrical Characteristics

Rating at 25℃ambient temperature unless otherw ise specified.
Single phase, half w ave, 60 Hz, resistive or inductive load.

For capacitive load, derate current by 20%

=

A

Symbol

V

RRM

V

RMS

VDC
I

(AV)

I

FSM

VF

IR

Trr

Cj

θ

R

JA

J

STG

SF

SF 22SF

21

50 100 150 200 300 400 500 600 V
35 70 105 140 210 280 350 420 V

23

50 100 150 200 300 400 500 600 V

0.95 1.3 1.7 V

40 30 pF

Type Nu mber

Maximum Recurrent Peak Reverse
Voltage
Maximum RMS Voltage

Maximum DC Blocking Voltage
Maximum Average Forward Rectified

Current .375 (9.5mm) Lead Length @T
55℃

Peak Forward Surge Current, 8.3 m s
Single Half Sine-w ave Superimposed on
Rated Load (JEDEC method )
Maximum Instantaneous Forward Voltage
@ 2.0A
Maximum DC Reverse Current

=25℃at Rated DC Blocking Voltage

@ T

A

@ T

=100℃

A

Maximum Reverse Recovery Time
(Note 1)
Typical Junction Capacitance (Note 2)

Typical Therm al Resistance (Note 3)
Operating Temperature Range T
Storage Temperature Range T

Notes: 1. Reverse Recovery Test Conditions: IF=0.5A, IR=1.0A, IRR=0.25A

2. Measured at 1 MHz and Applied Reverse Voltage of 4.0 V D .C.

3. Mount on Cu-Pad Size 10mm x 10mm on PCB .

Voltage Range
50 to 600 Volts

Current

2.0 Amperes

DO-15

SF

SF

24

25

2.0 A

50 A

5.0

100

35 nS

65

-65 to +125

-65 to +150

SF 26SF

27

SF

28

Units

uA
uA

℃/W

℃
℃

- 180 -

RATINGS AND CHARACTERISTIC CURVES (SF21 THRU SF28)

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

50W
NONINDUCTIVE

(+)
50Vdc
(approx)
(-)

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

FIG.3- TYPICAL REVERSE CHARACTERISTICS

10000

1000

100

10

1

INSTANTANEOUS REVERSE CURRENT.( A)

.1

PERCENT OF RATED PEAK REVERSE VOLTAGE. (%)

10W
NONINDUCTIVE

DUT

1W

NON
INDUCTIVE

1 megohm 22pf

2. Rise Time=10ns max. Sourse Impedance=
50 ohms

20 40 60 80 100 120

OSCILLOSCOPE
(NOTE 1)

0

Tj=100 C

0

Tj=25 C

PULSE
GENERATOR
(NOTE 2)

+0.5A

(-)

-0.25A

(+)

-1.0A

trr

0

1cm

SET TIME BASE FOR
5/ 10ns/ cm

FIG.4- TYPICAL FORWARD CHARACTERISTICS

100.0

10.0

1.0

0.1

INSTANTANEOUS FORWARD CURRENT. (A)

.01

.4 .6 .8 1.0 1.2 1.4 1.6 1.8

FIG.2- MAXIMUM AVERAGE
FORWARD CURRENT DERATING

3.0

2.5

2.0

1.5

1.0

0.5

0

AVERAGE FORWARD CURRENT. (A)

25 50 75 100 125 150 175

AMBIENT TEMPERATURE. ( C)

SF21~SF24

SF25~SF26

SF27~SF28

o

Tj=25 C
Pulse Width=300 s
1% Duty Cycle

FORWARD VOLTAGE. (V)

Single Phase
Half Wave 60Hz
Resistive or
Inductive Load

0.375" (9.5mm)
Lead Length

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FIG.5- MAXIMUM NON-REPETITIVE FORWARD

SURGE CURRENT

60

50

40

30

20

10

PEAK FORWARD SURGE CURRENT. (A)

0

1

2 5 10 20 10050

NUMBER OF CYCLES AT60Hz

8.3ms Single Half Sine Wave
JEDEC Method

- 181 -

FIG.6- TYPICAL JUNCTION CAPACITANCE

150

125

100

75

50

JUNCTION CAPACITANCE.(pF)

25

0

.1 .5 1 52 10 20 50 100 200 500 1000

SF21~SF24

SF25~SF28

REVERSE VOLTAGE. (V)

Tj=25 C

0