BY251 - BY255

SILICON RECTIFIER DIODES

PRV : 200 - 1300 Volts

Io : 3.0 Amperes

FEATURES :

* High current capability

* High surge current capability

* High reliability

* Low reverse current

* Low forward voltage drop

MECHANICAL DATA :

* Case : DO-201AD Molded plastic

* Epoxy : UL94V-O rate flame retardant

* Lead : Axial lead solderable per MIL-STD-202,

Method 208 guaranteed

* Polarity : Color band denotes cathode end

* Mounting position : Any

* Weight :

0.929 grams

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Rating at 25

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

For capacitive load, derate current by 20%.

SYMBOL

BY251

BY252

BY253

BY254

BY255

UNIT

Maximum Repetitive 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 Current

0.375"(9.5mm) Lead Length Ta = 50

°C

Peak Forward Surge Current

8.3ms Single half sine wave Superimposed

on rated load (JEDEC Method)

1.1

V

Maximum DC Reverse Current

Ta = 25

°C

20

µA

at rated DC Blocking Voltage

Ta = 100

°C

50

µA

Typical Junction Capacitance (Note1)

50

pF

Typical Thermal Resistance (Note2)

R

18

°C/W

Junction Temperature Range

- 65 to + 175

°C

Storage Temperature Range

- 65 to + 175

°C

Notes :

(2) Thermal resistance from Junction to Ambient at 0.375" (9.5mm) Lead Lengths, P.C. Board Mounted.

Page 1 of 2

Rev. 01 : Mar 23, 2002

100

A

RATING

3.0

A

DO - 201AD

Dimensions in inches and ( millimeters )

0.21 (5.33)

0.19 (4.83)

0.375 (9.53)

0.285 (7.24)

0.052 (1.32)

0.048 (1.22)

1.00 (25.4)

MIN.

1.00 (25.4)

MIN.