Littelfuse 250S Series - Manual (Page 2)

58
Revised: July 29, 2012
POLY-FUSE ® Resettable PTCs
© 2012 Littelfuse, Inc.
Surface Mount > 250S Series
250S Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250S.html for current information.
Ambient Operation Temperature
-40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C
Part Number Hold Current (A)
250S130 0.21 0.19 0.17 0.13 0.11 0.10 0.09 0.07 0.05
Temperature Rerating
Temperature Rerating Curve Average Time Current Curves
The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.
200.00
160.00
120.00
80.00
40.00
0.00
-40.00 0.00 40.00 80.00 120.00
Device Ambient Temperature ºC
Percentage of rated current %
Protection Application Guide
Region/
Specification
Application
Device
Selection
South America/
Asia/Europe


*56
,
Access network equipment
Remote terminal
Repeaters


8"/
FRVJQNFOU
Cross –connect
250S130
250S130V
250S130-RA
250S130-RB
250S130-RC
South America/
Asia/Europe


*56
,
Customer and IT equipment
Analog modems
"%4-

Y%4-
Phone sets, PBX systems
Internet appliances
POS terminals
250S130
250S130V
250S130-RA
250S130-RB
250S130-RC
South America/
Asia/Europe


*56
,
Central Office
1054*4%/
MJOFDBSET
T1/E1/J1 linecards
"%4-7%4-
TQMJUUFST
$46%46
250S130
250S130V
250S130-RA
250S130-RB
250S130-RC
Agency Specification Selection Guide For Telecom
and Networking Applications
Product Lightning Power Cross
250S130
250S130V
250S130-RA
250S130-RB
250S130-RC
*56
,
o

1.5kV 10/700μs *56
,
o

230Vac, 10Ω
250S
0.10
1
10
100
1000
0.1 1 10 100
Current in Amperes
Time in Seconds
0.13A