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BY251 THRU BY255

3.0 AMPS. Silicon Rectifiers

Voltage Range

200 to 1300 Volts

Current

3.0 Amperes

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

Polarity: Color band denotes cathode end

High temperature soldering guaranteed:

260

lengths at 5 lbs., (2.3kg) tension

Weight: 1.2 grams

DO-201AD

Dimensions in inches and (millimeters)

Maximum Ratings and Electrical Characteristics

Rating at 25

℃ambient temperature unless otherwise specified.

Single phase, half wave, 60 Hz, resistive or inductive load.

For capacitive load, derate current by 20%

Type Number

Symbol

BY251 BY252 BY253 BY254 BY255 Units

Maximum Recurrent Peak Reverse Voltage

200

400

600

800

1300

V

Maximum RMS Voltage

140

280

420

560

910

V

Maximum DC Blocking Voltage

200

400

600

800

1300

V

Maximum Average Forward Rectified

Current . 375 (9.5mm) Lead Length

℃

3.0

A

Peak Forward Surge Current, 8.3 ms Single

Half Sine-wave Superimposed on Rated

Load (JEDEC method )

150

A

Maximum Instantaneous Forward Voltage

@ 3.0A

1.0

V

℃

℃

5.0

100

uA

uA

Maximum Full Load Reverse Current, Full

Cycle Average .375”(9.5mm) Lead Length

℃

HTIR

30

uA

Typical Junction Capacitance

( Note 1 )

Cj

40

pF

Typical Thermal Resistance ( Note 2 )

R

40

℃/W

Operating Temperature Range

-65 to +150

℃

Storage Temperature Range

-65 to +150

℃

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

2. Mount on Cu-Pad Size 16mm x 16mm on P.C.B.