VISHAY S494D Datasheet

Fast Soft Recovery Rectifier

Features

D

Hermetically sealed axial–leaded
glass envelope

D

Glass passivated

D

Very low reverse current

D

Soft recovery characteristics

S494D

Vishay Telefunken

Applications

Switched–mode power supplies
High–frequency inverter circuits
Electronic ballast

Absolute Maximum Ratings

Tj = 25_C

Parameter Test Conditions Type Symbol Value Unit

Reverse voltage
=Repetitive peak reverse voltage

Peak forward surge current tp=8.3ms, half–sinewave I
Average forward current l= 10mm, T
Junction and storage temperature range Tj=T

=38°C I

amb

=V

Maximum Thermal Resistance

Tj = 25_C

Parameter Test Conditions Symbol Value Unit

Junction ambient lead length l = 10mm, TL = constant R

thJA

95 10526

V

R

RRM

FSM

FAV

–65...+175°C

stg

60 K/W

600 V

30 A

1.25 A

Electrical Characteristics

Tj = 25_C

Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=1A V
Reverse current VR=V

Reverse recovery time IF=0.5A, IR=1A, iR=0.25A t

Document Number 86058
Rev. 2, 24-Jun-98

VR=V

RRM

, Tj=150°C I

RRM

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F

I

R
R
rr

1.3 V
500 nA
150
200 ns

m

1 (3)

A

S494D

Vishay Telefunken

Characteristics (Tj = 25_C unless otherwise specified)

100

10

Tj=175°C

1

Tj=25°C

0.1

0.01

F

I – Forward Current ( A )

0.001
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

VF – Forward Voltage ( V )15962

Figure 1. Forward Current vs. Forward Voltage

1.4

1.2

1.0

0.8

0.6

VR=V

RRM

half sinewave

R

=60K/W

thJA

l=10mm

250

VR = V

RRM

R

=

200

150

100

50

R

P – Reverse Power Dissipation ( mW )

0

25 50 75 100 125 150 175

Tj – Junction Temperature ( °C )15964

thJA

60K/W

110K/W

150K/W

Figure 3. Max. Reverse Power Dissipation vs.

Junction Temperature

1000.0

1000.0
VR = V

RRM

100.0

100.0

m

10.0

10.0

0.4
R

=110K/W

0.2

FAV

I – Average Forward Current ( A )

0

0 20 40 60 80 100 120 140 160 180

thJA

PCB: d=10mm

T

– Ambient Temperature ( °C )15963

amb

Figure 2. Average Forward Current vs.

Ambient Temperature

Dimensions in mm

Standard Glass Case
DOT 30 B
Weight max. 0.5g

Cathode Identification

1.0

1.0

R

I – Reverse Current ( A )

0.1

0.1
25 50 75 100 125 150 175

25 50 75 100 125 150 175

Tj – Junction Temperature ( °C )15965

Figure 4. Reverse Current vs. Junction Temperature

∅ 3 max.

technical drawings
according to DIN
specifications

95 10524

∅ 0.82 max.

26 min. 26 min.

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2 (3)

4.2 max.

Document Number 86058

Rev. 2, 24-Jun-98