RECTRON 1N4948, 1N4947, 1N4946, 1N4944, 1N4942 Datasheet

RECTRON

1.0 (25.4)
MIN.

.166 (4.2)

.205 (5.2)

1.0 (25.4)
MIN.

.107 (2.7)
.080 (2.0)

DIA.

.034 (0.9)
.028 (0.7)

DIA.

SEMICONDUCTOR

TECHNICAL SPECIFICA TION

FAST RECOVERY RECTIFIER

VOLTAGE RANGE 200 to 1000 Volts CURRENT 1.0 Ampere

FEATURES

* High switching capability
* Low leakage
* Low forward voltage drop
* High current capability
* High surge current capability

MECHANICAL DATA

* Case: Molded plastic
* Epoxy: Device has UL flammability classification 94V-O
* Lead: MIL-STD-202E method 208C guaranteed
* Mounting position: Any
* Weight: 0.33 gram

1N4942

THRU

1N4948

DO-41

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

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

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

at TA = 75oC
Peak Forward Surge Current 8.3 ms single half sine-wave

superimposed on rated load (JEDEC method)
Typical Junction Capacitance (Note 2)
Operating and Storage Temperature Range

ELECTRICAL CHARACTERISTICS

Maximum Instantaneous Forward Voltage at 1.0A DC Volts
Maximum DC Reverse Current

at Rated DC Blocking Voltage TA = 25oC
Maximum Full Load Reverse Current Full Cycle

Average, .375” (9.5mm) lead length at TL = 55oC
Maximum Reverse Recovery Time (Note 1)

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

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

(At TA = 25oC unless otherwise noted)

RATINGS

(At TA = 25oC unless otherwise noted)

CHARACTERISTICS

SYMBOL

V

RRM

V

RMS

V

DC

I

O

I

FSM

C

J

TJ, T

STG

SYMBOL

V

F

I

R

trr

1N4942 1N4946 1N4947 1N49481N4944

200 600 800 1000400
140 420 560 700280
200 600 800 1000400

30
15

-65 to + 150

1.3

5.0

100

150 500

250

UNITS

Volts
Volts
Volts

Amps1.0

Amps

pF

0

C

UNITS1N4942 1N4946 1N4947 1N49481N4944

uAmps

uAmps

nSec

2001-5

RATING AND CHARACTERISTIC CURVES

(

1N4942 THRU 1N4948

)

FIG. 1 - TYPICAL FORWARD CURRENT

DERATING CURVE

1.0

.8

.6

.4

Single Phase
Half Wave 60Hz

.2

Resistive or
Inductive Load

0

AVERAGE FORWARD CURRENT, (A)

0 25 50 75 100 125 150 175

AMBIENT TEMPERATURE, ( )

FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD

50

SURGE CURRENT

8.3ms Single Half Sine-Wave
(JEDED Method)

40

30

20

10

1

FORWARD SURGE CURRENT, (A)

FIG. 2 - TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

10

1.0

.1

TJ = 25

Pulse Width=300uS
1% Duty Cycle

.01

.4 .6 .8 1.0 1.2 1.4 1.6

INSTANTANEOUS FORWARD CURRENT, (A)

INSTANTANEOUS FORWARD VOLTAGE, (V)

FIG. 4 - TYPICAL REVERSE CHARACTERISTICS

20
10

TJ = 125

1.0

TJ = 75

.1

TJ = 25

0

20 4 6 8 10 20 40 6080100

NUMBER OF CYCLES AT 60Hz

FIG. 3 - TYPICAL JUNCTION CAPACITANCE

200
100

60
40

20
10

6

TJ = 25

4
2

JUNCTION CAPACITANCE, (pF)

1

.1 .2 .4 1.0 2 4 10 20 40 100

REVERSE VOLTAGE, ( V )

INSTANTANEOUS REVERSE CURRENT, (uA)

FIG. 6 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY

50
NONINDUCTIVE10NONINDUCTIVE

D.U.T

( + )

25 Vdc
(approx)

( - )

1
NON­INDUCTIVE

1 Rise Time = 7ns max. Input Impedance =

NOTES:

1 megohm. 22pF.

2. Rise Time = 10ns max. Source Impedance =
50 ohms.

OSCILLOSCOPE

(NOTE 1)

.01

0 20 40 60 80 100 120 140

PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)

TIME CHARACTERISTIC

trr

0

1cm

SET TIME BASE FOR
50/100 ns/cm

( - )

PULSE

GENERATOR

(NOTE 2)

( + )

+0.5A

-0.25A

-1.0A

RECTRON