RATING AND CHARACTERISTIC CURVES ( FR251G - FR257G-STR )

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

+

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

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

3. All Resistors = Non-inductive Types.

FIG.2 - DERATING CURVE FOR OUTPUT

FIG.3 - MAXIMUM NON-REPETITIVE PEAK

RECTIFIED CURRENT

FORWARD SURGE CURRENT

0

25

50

75

100

125

150

175

1

2

4

6

10

20

40

60 100

AMBIENT TEMPERATURE, (

NUMBER OF CYCLES AT 60Hz

FIG.4 - TYPICAL FORWARD CHARACTERISTICS

FIG.5 - TYPICAL REVERSE CHARACTERISTICS

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

FORWARD VOLTAGE, VOLTS

Page 2 of 2

Rev. 02 : March 24, 2005

60Hz RESISTIVE OR INDUCTIVE LOAD

2.0

1.5

1.0

0.5

2.5

100

10

1.0

80

0

10

0

60

40

20

0.1

10

80

0.01

0.01

1.0

0.1

100

0

20

40

60

PERCENT OF RATED REVERSE

VOLTAGE, (%)

°C

°C

°C

Pulse Width = 300

µs

2% Duty Cycle

8.3 ms SINGLE HALF SINE WAVE

Ta = 50

°C

SET TIME BASE FOR 50/100 ns/cm

Trr

+ 0.5

0

- 0.25

- 1.0 A

1 cm

OSCILLOSCOPE

( NOTE 1 )

1

Ω

50

Ω

10

Ω

D.U.T.

50 Vdc

(approx

)

PULSE

GENERATOR

( NOTE 2 )

120

140