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©2006 Littelfuse

250R Series

Specifications are subject to change without notice.

5

Electronics Designers Guide

Radial Leaded

Part Marking System

B

B

C

A

A

Figure 1

E

D

C

E

Marking

Marking

Figure 2

D

F

F

250

080

XXXX

Voltage Rating

Current Rating

Date Code

(Contact Littelfuse

for additional

information)

Littelfuse

Trademark

Voltage Rating

Current Rating

Date Code

(Contact Littelfuse

for additional

information)

Littelfuse

Trademark

250

120

XXXX

Dimensions

B

B

C

A

A

Figure 1

E

D

C

E

Marking

Marking

Figure 2

D

F

F

250

080

XXXX

Voltage Rating

Current Rating

Date Code

(Contact Littelfuse

for additional

information)

Littelfuse

Trademark

Voltage Rating

Current Rating

Date Code

(Contact Littelfuse

for additional

information)

Littelfuse

Trademark

250

120

XXXX

Figure 2

Figure 

Part Number

A

B

C

D

E

Physical Characteristics

Inches

mm

Inches

mm

Inches

mm

Inches

mm

Inches

mm

Lead (dia)

Material Figure

Max.

Max.

Max.

Max.

Max.

Max.

Min.

Min.

Typ.

Typ.

Inches

mm

250R080

0.23

5.8

0.39

9.9

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

1

250R080T

0.23

5.8

0.39

9.9

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

1

250R120

0.26

6.5

0.43

11

0.15

3.8

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-RA

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-RC

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-RF

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-R1

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-R2

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120-R3

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R120T

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R145

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R145-RA

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R145-RB

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R145T

0.26

6.5

0.43

11

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

2

250R180

0.37

9.5

0.47

12

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

1

250F180T

0.37

9.5

0.47

12

0.18

4.6

0.19

4.7

0.20

5.1

0.026

0.65

Sn/Cu

1