CFS04 American Accurate Components, CFS04 Datasheet - Page 9

• Manufacturer Part Number: CFS04
• Description: Lead Free Thin Film Chip Fuse
• Manufacturer: American Accurate Components

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■ Determination of the type of fuse
Calculating the required rating of fuse needed .
e.g.,
Condition :
◆ Normal operating voltage : DC 12 V
◆ Following bottom index-table :
◆ Calculating value =2.255 A , 2.255A < rating current of fuse
◎ Safety coefficient : 70 % is safety coefficient from practical experience
◎
e.g.,
Lead Free Thin Film Chip Fuse
Condition :
Normal Operating Current
0.7 x derating ratio
2.255 < rating current of fuse
0.7 x 0.95
Safety coefficient
Ambient temperature 40 ℃ : Derating ratio ≒ 0.95
Normal operating current =1.5 A
1.5
< rating current of fuse
Ambient temperature
< rating current of fuse
TA-I TECHNOLOGY CO., LTD
Document No TCFS-04OS049D
Issued date
Page
2007/7/25
9/15