EIC FR257-STR, FR257, FR255, FR254, FR256 Datasheet

FR251 - FR257-STR

FAST RECOVERY

RECTIFIER DIODES

PRV : 50 - 1000 Volts

Io : 2.5 Amperes

FEATURES :

MECHANICAL DATA :

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Rating at 25

°

C ambient temperature unless otherwise specified.

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

For capacitive load, derate current by 20%.

FR257

-STR

Notes :

D2A

* High current capability
* High surge current capability
* High reliability
* Low reverse current
* Low forward voltage drop
* Fast switching for high efficiency

* Case : D2A 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 : 0.645 gram

RATING

Maximum Recurrent Peak Reverse Voltage V
Maximum RMS Voltage V
Maximum DC Blocking Voltage V
Maximum Average Forward Current

0.375"(9.5mm) Lead Length Ta = 55 °C
Peak Forward Surge Current,

8.3ms Single half sine wave Superimposed
on rated load (JEDEC Method)
Maximum Peak Forward Voltage at IF = 2.5 A V

Maximum DC Reverse Current Ta = 25 °C
at Rated DC Blocking Voltage Ta = 100 °C
Maximum Reverse Recovery Time ( Note 1 )
Typical Junction Capacitance ( Note 2 ) C
Junction Temperature Range T
Storage Temperature Range T

SYMBOL FR251 FR252 FR253 FR254 FR255 FR256 FR257

F(AV)

I

I

I

RRM
RMS

DC

FSM

R

I

R(H)

Trr

STG

0.161 (4.1)

0.154 (3.9)

0.040 (1.02)

0.0385 (0.98)

1.00 (25.4)
MIN.

0.284 (7.2)

0.268 (6.8)

1.00 (25.4)
MIN.

Dimensions in inches and ( millimeters )

UNIT

50 100 200 400 600 800 1000 1000 V
35 70 140 280 420 560 700 700 V
50 100 200 400 600 800 1000 1000 V

A2.5

100

F

150 250 500 250 ns

J
J

1.3 V
10

500

28 pf

- 65 to + 150

- 65 to + 150

A

µA
µA

°C
°C

( 1 ) Reverse Recovery Test Conditions : IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A.
( 2 ) Measured at 1.0 MHz and applied reverse voltage of 4.0 V

Page 1 of 2 Rev. 01 : April 2, 2002

DC

RATING AND CHARACTERISTIC CURVES ( FR251 - FR257 )

+

20

+ 0.5 A

0

- 0.25 A

- 1.0 A

1 cm

FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM

50 Ω 10 Ω

D.U.T.

50 Vdc

(approx)

1 Ω

NOTES : 1. Rise Time = 7 ns max., Input Impedance = 1 megaohm, 22 pF.

2. Rise time = 10 ns max., Source Impedance = 50 ohms.

3. All Resistors = Non-inductive Types.

OSCILLOSCOPE

( NOTE 1 )

PULSE

GENERATOR

( NOTE 2 )

Trr

SET TIME BASE FOR 50/100 ns/cm

FIG.2 - DERATING CURVE FOR OUTPUT FIG.3 - MAXIMUM NON-REPETITIVE PEAK
RECTIFIED CURRENT FORWARD SURGE CURRENT

2.5

2.0

1.5

1.0

0.5

CURRENT, AMPERES

AVERAGE FORWARD OUTPUT

60Hz RESISTIVE OR INDUCTIVE LOAD

0

0 25 50 75 100 125 150 175 1 2 4 6 10 20 40 60 100

AMBIENT TEMPERATURE, ( °C)

100

80

60

40

CURRENT, AMPERES

20

PEAK FORWARD SURGE

0

8.3 ms SINGLE HALF SINE WAVE

NUMBER OF CYCLES AT 60Hz

Ta = 50 °C

FIG.4 - TYPICAL FORWARD CHARACTERISTICS FIG.5 - TYPICAL REVERSE CHARACTERISTICS

100 10

Pulse Width = 300 µs

10

1.0

2% Duty Cycle

TJ = 25 °C

1.0

0.1

MICROAMPERES

TJ = 100 °C

TJ = 25 °C

REVERSE CURRENT,

0.1

FORWARD CURRENT, AMPERES

0.01
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

0.01

PERCENT OF RATED REVERSE VOLTAGE, (%)

FORWARD VOLTAGE, VOLTS

Page 2 of 2 Rev. 01 : April 2, 2002