HER251 THRU HER258

HIGH EFFICIENCY RECTIFIERS

Reverse Voltage - 50 to 1000 Volts

Forward Current - 2.5 Amperes

The plastic package carries Underwriters Laboratory

Flammability Classification 94V-0

High speed switching for high efficiency

Low reverse leakage

High forward surge current capability

High temperature soldering guaranteed:

5 lbs. (2.3kg) tension

FEATURES

MECHANICAL DATA

Dimensions in inches and (millimeters)

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

50

35

50

100

70

100

200

140

200

400

280

400

600

420

600

800

560

800

VOLTS

VOLTS

VOLTS

SYMBOLS

UNITS

Amps

Amps

Volts

2.5

60.0

1.3

Operating junction and storage temperature range

Maximum repetitive peak reverse voltage

Maximum RMS voltage

Maximum DC blocking voltage

Maximum average forward rectified current

0.375

Peak forward surge current

8.3ms single half sine-wave superimposed on

rated load (JEDEC Method)

Maximum instantaneous forward voltage at 2.5A

Maximum DC reverse current

at rated DC blocking voltage

5.0

100.0

R

50.0

-65 to +150

pF

C

A

µ

Typical thermal resistance (NOTE 3)

C/W

Typical junction capacitance (NOTE 2)

Maximum reverse recovery time

(NOTE 1)

50

70

ns

HER

251

HER

252

HER

253

HER

254

HER

255

HER

256

HER

257

1000

700

1000

HER

258

300

210

300

Ratings at 25 C ambient temperature unless otherwise specified.

Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%.

1.0

1.70

2.Measured at 1MHz and applied reverse voltage of 4.0V D.C.

3.Thermal resistance from junction to ambient at 0.375

”(9.5mm)lead length,P.C.B. mounted

30.0

20.0

MDD Catalog Number

R-3

Min.1.0 ( 25.4 )

0.160(4.1)

0.040(1.0)

0.042(1.1)

φ 0.160( 4.1 )

φ0.138 ( 3.5 )

0.138(3.5)

Min.1.0 ( 25.4 )

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:0.012 ounce, 0.58 grams