1.Feature & Dimensions

* Plastic package has Underwriters Laboratory

Flammability Classification 94V-0

* High temperature metallurgically bonded construction

* Deffused junction

* Capable of meeting environmental standards of MIL-S-19500

* 2.5 A operation at TA=55°C with no thermal runaway

* For use in high frequency rectifier circuits

* Fast switching for high efficiency

* Typical IR less than 1.0µA

* High temperature soldering guaranteed:

260°C/10 seconds

* 0.375" (9.5mm) lead length, 5 lbs. (2.3kg) tension

2.Mechanical Data

Case

: JEDEC R-3, molded plastic body

Terminals

: Plated axial leads, solderable per

MIL-STD-750, Method 2026

Polarity

: Color band denotes cathode end

Mounting Position

: Any

Weight

: 0.015 oz., 0.40 g

Handling precautin

:None

3.Electrical Characteristic

Parameter Symbol

symbol

FR

251

FR

252

FR

253

FR

254

FR

255

FR

255P

FR

256

FR

257

FR

257P

Unit

Maximum repetitive peak reverse voltage

50

100

200

400

600

600

800

1000 1000

V

Maximum RMS voltage

35

70

140

280

420

420

560

700

700

V

Maximum DC blocking voltage

50

100

200

400

600

600

800

1000 1000

V

Maximum average forward rectified current

IF(AV)

A

Peak forward surge current 8.3ms single half

sine-wave superimposed on rated load (JEDEC

Method)

A

Maximum full load reverse current, full cycle

C

IR(AV)

µA

Typical thermal resistance (Note 2)

RθJA

°C/W

Operating junction and storage temperature range TJ, TSTG

°C

Parameter Symbol

symbol

FR

251

FR

252

FR

253

FR

254

FR

255

FR

255P

FR

256

FR

257

FR

257P

Unit

Maximum instantaneous forward voltage at 2.5A

V

Maximum DC reverse current TA = 25°C

at rated DC blocking voltage TA = 100°C

IR

µA

Typical reverse recovery time (Note 1)

trr

250

150

250

ns

Typical junction capacitance at 4.0V, 1MHz

CJ

PF

NOTES:

1. IF = 0.5A, IR = 1.0A, IRR = 0.25A

2. Thermal resistance from junction to ambient at 0.375” (9.5mm) lead length, P.C.B. mounted

–50 to +150

1.3

5.0

200

500

15

FR251 thru FR257

150

2.5

150

100

45

Reverse Voltage 50 to 1000V

Forward Current 2.5A

Fast Switching Rectifiers

We declare that the material of product

compliance with RoHS requirements.

LESHAN RADIO COMPANY, LTD.

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