SF21 datasheet(2/2 Pages) CHENG-YI

2 / 2 page

RATING AND CHARACTERISTICS CURVES

SF21 THRU SF26

CHENG- YI

ELECTRONIC

SUPER FAST RECTIFIER

Fig.3 - TYPICAL REVERSE

CHARACTERISTICS

PERCENT OF RATED PEAK

REVERSE VOLTAGE, (%)

0.1

1.0

100

.01

100

120

T =150C

T =100C

T =25C

Fig. 4 - TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

INSTANTANEOUS FORWARD VOLTAGE, VOLTS

.01

.001

1.0

10.0

1.0

1.2 1.4

Pulse Width-300 s

1% DUTY CYCLE

= 25 C

Fig.6 - TYPICAL JUNCTION CAPACITANCE

REVERSE VOLTAGE, (V)

100

200

100

1.0

= 25 C

Fig.1 - TEST CIRCUIT DIAGRAM AND REVERSE

RECOVERY TIME CHARACTERISTIC

(+)

(-)

Fig. 2 - TYPICAL FORWARD

CURRENT DERATING CURVE

trr

SINGLE PHASE

HALF WAVE

60Hz

RESISTIVE OR

INOUCTIVE LOAD

1.0

2.0

3.0

50 75 100

150

125

175

AMBIENT TEMPERATURE, C

-1.0A

-0.25

+0.5A

SET TIME BASE

FOR 10 /20 ns/cm

1cm

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

1 megohm, 22pF.

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

50 ohms.

NONINDUCTIVE

25 Vdc

(approx.)

NON-

INDUCTIVE

D.U.T.

OSCILLOSCOPE

(NOTE 1)

PULSE

GENERATOR

(NOTE 2)

SF2

1~S

F24

SF25

~SF2

Fig.5 -MAXIMUM NON-REPETITIVE

FORWARD SURGE CURRENT

NUMBER OF CYCLES AT 60 Hz

100

8.3ms Single Half Sine Wave

JEDEC Method

SF21 thru SF26

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