AXIAL SILASTIC GUARD JUNCTION STANDARD RECTIFIER

VOLTAGE RANGE

200 to 1300 Volts

BY251 THRU BY255

CURRENT

3.0 Ampere

Web Site:

FEATURES

•

Low coat construction

•

Low forward voltage drop

•

Low reverse leakage

•

High forward surge current capability

•

High temperature soldering guaranteed:

260℃/10 secods/.375”(9.5mm)lead length at 5 lbs(2.3kg) tension

MECHANICAL DATA

•

Case: Transfer molded plastic

•

Epoxy: UL94V-O rate flame retardant

•

Polarity: Color band denotes cathode end

•

Lead: Plated axial lead, solderable per MIL-STD-202E method 208C

•

Mounting position: Any

•

Weight: 0.042 ounce, 1.19 grams

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

•

Ratings at 25

•

Single Phase, half wave, 60Hz, resistive or inductive load

•

For capacitive load derate current by 20%

SYMBOLS

BY251

BY252

BY253

BY254

BY255

UNIT

Maximum Repetitive Peak Reverse Voltage

200

400

600

800

1300

Volts

Maximum RMS Voltage

140

280

420

560

910

Volts

Maximum DC Blocking Voltage

200

400

600

800

1300

Volts

Maximum Average Forward Rectified Current

3.0

Amps

Peak Forward Surge Current

8.3mS single half sine wave superimposed on

rated load (JEDEC method)

125

Amps

Maximum Instantaneous Forward Voltage @ 3.0A

1.1

Volts

5.0

Maximum DC Reverse Current at Rated

DC Blocking Voltage per element

50

µA

Maximum Full Load Reverse Current, full cycle average

500

µA

Typical Junction Capacitance (Note 1)

40

pF

Typical Thermal Resistance (Note 2)

30

℃

/W

Operating Junction Temperature Range

-55 to +150

℃

Storage Temperature Range

-55 to +150

℃

Notes:

1.

Measured at 1.0MHz and Applied Reverse Voltage of 4.0V DC.

2.

Thermal Resistance from junction to ambient at .375”(9.5mm) lead length, P.C.board mounted.

DIA.

.052(1.3)

.048(1.2)

.220(5.6)

.197(5.0)

1.0(25.4)

MIN.

.375(9.5)

.335(8.5)

1.0(25.4)

MIN.

DO-27

Dimensions in inches and (millimeters)

DIA.

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