RECTRON FR257, FR257P, FR254, FR256, FR255P Datasheet

RECTRON		FR251
		THRU
SEMICONDUCTOR

TECHNICAL SPECIFICATION

FR257

FAST RECOVERY RECTIFIER

VOLTAGE RANGE 50 to 1000 Volts CURRENT 2.5 Amperes

FEATURES

* Fast switching

* Low leakage

* Low forward voltage drop

* High current capability

* High current surge

R-3

* High reliability

MECHANICAL DATA

* Case: Molded plastic

* Epoxy: Device has UL flammability classification 94V-O

.042 (1.1)

DIA.

* Lead: MIL-STD-202E method 208C guaranteed

1.0 (25.4)

.040 (1.0)

* Mounting position: Any

MIN.

* Weight: 0.54 gram

.160 (4.1)

.138 (3.5)

.160 (4.1)

DIA.

.138 (3.5)

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

1.0 (25.4)

MIN.

Ratings at 25 oC ambient temperature unless otherwise specified.

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

For capacitive load, derate current by 20%.

Dimensions in inches and (millimeters)

MAXIMUM RATINGS (At TA = 25oC unless otherwise noted)

RATINGS

SYMBOL

FR251

FR252

FR253

FR254

FR255

FR255P

FR256

FR257

FR257P

UNITS

Maximum Recurrent Peak Reverse Voltage

VRRM

50

100

200

400

600

600

800

1000

1000

Volts

Maximum RMS Voltage

VRMS

35

70

140

280

420

420

560

700

700

Volts

Maximum DC Blocking Voltage

VDC

50

100

200

400

600

600

800

1000

1000

Volts

Maximum Average Forward Rectified Current

IO

2.5

Amps

at TA= 75oC

Peak Forward Surge Current 8.3 ms single half sine-wave

IFSM

150

Amps

superimposed on rated load (JEDEC method)

Typical Junction Capacitance (Note 2)

CJ

60

pF

Operating and Storage Temperature Range

TJ, TSTG

-65 to + 150

0 C

ELECTRICAL CHARACTERISTICS (At TA = 25oC unless otherwise noted)

CHARACTERISTICS

SYMBOL

FR251

FR252

FR253

FR254

FR255

FR255P

FR256

FR257

FR257P

UNITS

Maximum Instantaneous Forward Voltage at 2.5A DC

VF

1.3

Volts

Maximum DC Reverse Current

5.0

uAmps

at Rated DC Blocking Voltage TA = 25oC

IR

Maximum Full Load Reverse Current Average,

100

uAmps

Full Cycle .375” (9.5mm) lead length at TL = 55oC

Maximum Reverse Recovery Time (Note 1)

trr

150

250

150

500

250

nSec

NOTES : 1. Test Conditions: IF = 0.5A, IR = -1.0A, IRR = -0.25A

2001-5

2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts