Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

MF-LS Series - PTC Resettable Fuses

Product Dimensions

Model

A

B

C

D

F

Pkg.

Style

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

MF-LS100S

20.9

(0.823)

23.1

(0.909)

4.9

(0.193)

5.2

(0.205)

0.6

(0.024)

1.0

(0.039)

4.1

(0.161)

5.5

(0.217)

3.8

(0.150)

4.1

(0.161)

S

MF-LS180

24.0

(0.945)

26.0

(1.024)

4.9

(0.193)

5.2

(0.205)

0.6

(0.024)

1.0

(0.039)

4.1

(0.161)

5.5

(0.217)

3.8

(0.150)

4.1

(0.161)

Std.

MF-LS180L

35.0

(1.38)

37.5

(1.48)

4.9

(0.193)

5.6

(0.22)

0.6

(0.024)

1.0

(0.039)

9.6

(0.38)

10.0

(0.40)

3.8

(0.150)

4.2

(0.17)

Std.

MF-LS180S

24.0

(0.945)

26.0

(1.024)

4.9

(0.193)

5.2

(0.205)

0.6

(0.024)

1.0

(0.039)

4.1

(0.161)

5.5

(0.217)

3.8

(0.150)

4.1

(0.161)

S

MF-LS190

21.3

(0.839)

23.4

(0.921)

10.2

(0.402)

11.0

(0.433)

0.5

(0.020)

1.1

(0.043)

5.0

(0.197)

7.6

(0.299)

4.8

(0.189)

5.4

(0.213)

Std.

MF-LS190RU

19.8

(0.780)

20.8

(0.819)

13.3

(0.524)

14.3

(0.563)

0.4

(0.016)

0.76

(0.030)

8.1

(0.319)

9.5

(0.374)

3.8

(0.150)

4.1

(0.161)

RU

MF-LS260

24.0

(0.945)

26.0

(1.024)

10.8

(0.425)

11.9

(0.469)

0.6

(0.024)

1.0

(0.039)

5.0

(0.197)

7.0

(0.276)

5.9

(0.232)

6.1

(0.240)

Std.

MF-LS300

28.4

(1.118)

31.8

(1.252)

13.0

(0.512)

13.5

(0.531)

0.5

(0.020)

1.1

(0.043)

6.3

(0.248)

8.9

(0.350)

6.0

(0.236)

6.6

(0.260)

Std.

MF-LS340

24.0

(0.945)

26.0

(1.024)

14.8

(0.583)

15.9

(0.626)

0.6

(0.024)

1.0

(0.039)

4.0

(0.158)

5.0

(0.197)

6.0

(0.236)

6.1

(0.240

Std.

Packaging:

Bulk - 500 pcs. per bag.

Tape and Reel - Consult factory.

DIMENSIONS:

MM

(INCHES)

Typical Part Marking

Represents total content. Layout may vary.

NOTE: Longer lead option available. Consult factory.

F

B

D

D

A

F

B

D

D

A

D

B

F

F

A

C

C

C

SLIT

NOMINAL

0.5

(.020)

4.0

(.157)

X

Terminal material: quarter-hard nickel

Standard Style

“RU” Style

“S” Style

MANUFACTURER'S

TRADEMARK

PART

IDENTIFICATION

LOT NO.

(T = TAIWAN

S = CHINA)

LS180

0144T

DATE CODE

(FIRST DIGIT =

LAST DIGIT OF YEAR;

NEXT THREE DIGITS =

DAY OF YEAR)

Applications

Any application that requires extra protection

at elevated ambient temperatures, which the

100 °C trip temperature provides.