Datasheet > 250R_06

250R_06

更新时间： 2024-10-14 03:55:39

品牌	Logo	应用领域
力特 - LITTELFUSE		/
页数	文件大小	规格书
6页	383K
描述
POLYFUSE Resettable PTCs Radial Leaded

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250R_06 数据手册

POLYFUSE^®Resettable PTCs

Radial Leaded

250R Series

Description

• The 250R series is designed to protect against short

duration high voltage fault currents (power cross or

power induction surge) typically found in telecom

applications (250Vrms). The series can be used to help

telecom networking equipment meet the protection

requirements speciﬁed in ITU K.20 and K.21.

Features

• RoHS compliant and

lead-free

• Fast time-to-trip

• 0.08 – 0.18 Hold current

range, 60VDC operating

voltage

Agency Approvals

• Binned and sorted narrow

resistance ranges available

• 250VAC interrupt rating

AGENCY

AGENCY FILE NUMBER

E183209

Applications

R50082521

• Customer Premises

Equipment (CPE)

• LAN/WAN Equipment

• Access equipment

• Central Ofﬁce (CO)/

Telecom Centers

Electrical Characteristics

Maximum Time

Agency

Resistance

R _typ

V_max

/ V

To Trip

Approvals

ma^dx.

(W)

I _hold

(A)

I _trip

(A)

I _max

(A)

Part Number

R _min

(Ω)

R _1max

(Ω)

Current

Time

int

(A)

0.35

(Sec.)

(Ω)

250R080T

250R080

0.08

0.12

0.145

0.18

0.16

0.24

0.29

0.65

250/60

250R120

1.5

1.0

0.85

0.7

0.8

0.7

250R120-RA

250R120-RC

250R120-RF

250R120-R1

250R120-R2

250R120-R3

250R120T

250R145

5.4

7.5

10.5

1.2

2.5

250R145-RA

250R145-RB

250R145T

250R180

5.5

2.5

2.0

4.5

5.4

0.8

1.4

7.5

2.2

3.9

1.8

250R180T

4.5

*typical value

C: coated device

T: pre-tripped device

250R Series

ꢀ

www.littelfuse.com

Speciﬁcations are subject to change without notice.

Electronics Designers Guide

12 3 4 5 6

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