TeleLink Fuse
Temperature Derating Curve
Operating temperature is -55 °C to +125 °C with proper correction factor applied.
150
140
130
120
110
100
90
80
70
60
Effect on
Current Rating
50
40
30
-55 -60 -40 -20
0
20 40 60 80 100 125
Ambient ˚C
Chart of Correction Factor
Maximum Temperature Rise
TeleLink Fuse
F0500T
Temperature Reading
?75 °C (167 °F) *
?75 °C (167 °F) *
?75 °C (167 °F) *
F1250T
F1251T
* Higher currents and PCB layout designs can affect this parameter.
Notes:
•
•
Readings are measured at rated current after temperature stabilizes
The F1250T meets the requirements of UL 248-14. However, board layout, board trace widths, and ambient
temperature values can cause higher than expected rises in temperature. During UL testing, the typical
recorded heat rise for the F1250T at 2.2 A was 120 °C.
Package Symbolization
Manufactured in
USA
Manufactured in
Taiwan
Marking
FU
FT
JU
JT
F0500T
F
F
F1250T
F1251T
U
U
U
T
T
T
J
J
NU
NT
N
N
© 2002 Teccor Electronics
2 - 69
http://www.teccor.com
+1 972-580-7777
®
SIDACtor Data Book and Design Guide
TECCOR [ TECCOR ELECTRONICS ]
