Littelfuse 250S Series Bedienungsanleitung PDF herunterladen (Seite 2)

Revised: July 29, 2012

POLY-FUSE

Resettable PTCs

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 Cur

rent (A)

250S130 0.21

0.1

9 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/

sia/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

250S1

30V

250S130-RA

250S130-RB

250S130-RC

*56,o

1.5kV 10/700μs

*56,o

230Vac, 10Ω

250S

0.10

100

1000

0.1 1 10 100

Current in Amperes

Time in Seconds

0.13A

1 2 3 4 5

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