CFS12 American Accurate Components, CFS12 Datasheet - Page 9

• Manufacturer Part Number: CFS12
• Description: Document No Tcfs-12os051d Issued Date 2007/7/25 Lead Free Thin Film Chip Fuse Page 1/15
• Manufacturer: American Accurate Components

█ Derating ratio for different ambient Temperature
█
Calculating the required rating of fuse needed .
◎ Referring to bottom figure and select the appropriate derating ratio :
◎ Safety coefficient : 70 % is safety coefficient from practical experience
◎
e.g., Ambient temperature is 60 degree C
e.g.,
Lead Free Thin Film Chip Fuse
Condition :
Normal Operating Current
the derating ratio ≒ 0.95
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
Issued date
Page
105
TCFS-12OS051D
2007/7/25
9/15