CP04V3TR50 Datasheet, PDF (10/17 Pages) List of Unclassifed Manufacturers – Thin Film Chip Fuse

Thin Film Chip Fuse
Document No TCP-XXOS006H
Issued date
2012/06/28
Page
10/17
█ Derating ratio for different ambient Temperature
◎ Referring to bottom figure and select the appropriate derating ratio :
e.g., Ambient temperature is 60 degree C
the derating ratio ≒ 0.95
105
█ Calculating the required rating of fuse needed .
◎ Safety coefficient : 70 % is safety coefficient from practical experience
Normal Operating Current
◎
0.7 x derating ratio
< rating current of fuse
Ambient temperature
Safety coefficient
e.g.,
Condition : Normal operating current =1.5 A
Ambient temperature 40 ℃ : Derating ratio ≒ 0.95
1.5
0.7 x 0.95
< rating current of fuse
2.255 < rating current of fuse
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