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©2006 Littelfuse

LR Series

Specifications are subject to change without notice.



Electronics Designers Guide

Axial Leaded Strap

LR Series

The new LR series device provides reliable, noncycling

protection against overcharging and short circuits events

for rechargeable battery cells where resettable protection

is desired.

Agency Approvals

Electrical Characteristics

Part Number

I

hold

(A)

I

trip

(A)

V

max

(Vdc)

I

max

(A)

P

d

max.

(W)

Maximum Time

To Trip

Resistance

Agency

Approvals

Current

(A)

Time

(Sec.)

R

min

(

Ω)

R

typ

(

Ω)

R

1max

(

Ω)

15LR190

1.9

3.9

15

100

1.2

9.50

5.00

0.039

0.072

0.102

X

X

15LR190S

1.9

3.9

15

100

1.2

9.50

5.00

0.039

0.072

0.102

X

X

15LR260

2.6

5.8

15

100

2.5

13.00

5.00

0.020

0.042

0.063

X

X

15LR260S

2.6

5.8

15

100

2.5

13.00

5.00

0.020

0.042

0.063

X

X

15LR380

3.8

8.3

15

100

2.5

19.00

5.00

0.013

0.026

0.037

X

X

20LR450

4.5

8.9

20

100

2.5

22.50

5.00

0.011

0.020

0.028

X

X

20LR550

5.5

10.5

20

100

2.8

27.50

5.00

0.009

0.016

0.022

X

X

20LR600

6.0

11.7

20

100

2.8

30.00

5.00

0.007

0.014

0.019

X

X

20LR730

7.3

14.1

20

100

3.3

30.00

5.00

0.006

0.012

0.015

X

X

I

I

V

I

P

R

R

R

soldering of 260°C for 20 sec.

Caution: Operation beyond the specified rating may result in damage and possible arcing

and flame.

Description

Features

Applications

• RoHS compliant and

lead-free

• Weldable nickel terminals

• Slim, low profile design

• Compact design saves

board space

• Low resistance

• Rechargeable battery cell

protection

AGENCY

AGENCY FILE NUMBER

E183209

R50082521