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Vishay Intertechnology Electronic Components Datasheet


S494D

Fast Soft Recovery Rectifier



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S494D pdf
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
95 10526
Absolute Maximum Ratings
Tj = 25_C
Parameter
Reverse voltage
=Repetitive peak reverse voltage
Peak forward surge current
Average forward current
Junction and storage temperature range
Test Conditions
tp=8.3ms, half–sinewave
l= 10mm, Tamb=38°C
Type
Symbol
VR
=VRRM
IFSM
IFAV
Tj=Tstg
Value
600
30
1.25
–65...+175
Unit
V
A
A
°C
Maximum Thermal Resistance
Tj = 25_C
Parameter
Test Conditions
Junction ambient
lead length l = 10mm, TL = constant
Symbol
RthJA
Value
60
Unit
K/W
Electrical Characteristics
Tj = 25_C
Parameter
Test Conditions
Forward voltage
Reverse current
Reverse recovery time
IF=1A
VR=VRRM
VR=VRRM, Tj=150°C
IF=0.5A, IR=1A, iR=0.25A
Type Symbol Min Typ Max Unit
VF 1.3 V
IR 500 nA
IR 150 mA
trr 200 ns
Document Number 86058
Rev. 2, 24-Jun-98
www.vishay.de FaxBack +1-408-970-5600
1 (3)



No Preview Available !

S494D pdf
S494D
Vishay Telefunken
Characteristics (Tj = 25_C unless otherwise specified)
100 250
10
Tj = 175°C
1
Tj = 25°C
0.1
200 RthJA=
60K/W
150 110K/W
150K/W
100
VR = VRRM
0.01 50
0.001
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
15962
VF – Forward Voltage ( V )
Figure 1. Forward Current vs. Forward Voltage
1.4
VR = VR RM
1.2 half sinewave
1.0
RthJA=60K/W
0.8 l=10mm
0.6
0.4
0.2
RthJA=110K/W
PCB: d=10mm
0
0 20 40 60 80 100 120 140 160 180
15963
Tamb – Ambient Temperature ( °C )
Figure 2. Average Forward Current vs.
Ambient Temperature
0
25 50 75 100 125 150 175
15964
Tj – Junction Temperature ( °C )
Figure 3. Max. Reverse Power Dissipation vs.
Junction Temperature
1000.0
100.0
VR = VRRM
10.0
1.0
0.1
25 50 75 100 125 150 175
15965
Tj – Junction Temperature ( °C )
Figure 4. Reverse Current vs. Junction Temperature
Dimensions in mm
Standard Glass Case
DOT 30 B
Weight max. 0.5 g
Cathode Identification
3 max.
technical drawings
according to DIN
specifications
95 10524
0.82 max.
26 min.
www.vishay.de FaxBack +1-408-970-5600
2 (3)
4.2 max.
26 min.
Document Number 86058
Rev. 2, 24-Jun-98



Part Number S494D
Description Fast Soft Recovery Rectifier
Maker Vishay Telefunken - Vishay Telefunken
Total Page 3 Pages
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