RCH
www.vishay.com
OVERLOADS
The applied voltage must always be lower than the
maximum overload voltage as shown in the special features
table. ?
The values indicated on the graph below are applicable to
Vishay Sfernice
POWER RATING
For resistors mounted onto heatsink and thermal resistance
of 1 °C/W. ?
To improve the thermal conductivity, surfaces in contact
should be coated with a silicone grease.
resistors in air or mounted onto a heatsink.
100
ENERGY CURVE
100
75
RCH 25
RCH 5
RCH 10
10
1
RCH50
RCH25
RCH10
50
25
RCH 50
RCH5
0.1
0
0
20
40
60
80
100
120
140
0.01
AMBIENT TEMPERATURE IN °C
10
10
10
10
10
10
10 -7
-6
-5
-4
-3
-2
-1
10
0
POWER CURVE
1 000 000
100 000
OVERLOAD DURATION IN s
MARKING
Model, style, resistance value (in ? ), tolerance (in %),
manufacturing date, Vishay Sfernice trademark.
10 000
1000
RCH10
RCH50
RCH25
RCH5
100
10
10 -7
10 -6
10 -5
10 -4
10 -3
10 -2
10 -1
10 0
OVERLOAD DURATION IN s
Revision: 01-Aug-13
4
Document Number: 50006
For technical questions, contact: sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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