100

Revised: July 12, 2010

© 2010 Littelfuse, Inc.

250R Series

Radial Leaded > 250R Series

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/250R.html for current information.

Ambient Operation Temperature

-40°C

-20°C

0°C

23°C

40°C

50°C

60°C

70°C

85°C

Part Number

Hold Current (A)

250R080

0.12

0.11

0.09

0.08

0.06

0.05

0.05

0.04

0.03

250R080T

0.12

0.11

0.09

0.08

0.06

0.05

0.05

0.04

0.03

250R120

0.18

0.16

0.14

0.12

0.10

0.09

0.08

0.06

0.05

250R120T

0.18

0.16

0.14

0.12

0.10

0.09

0.08

0.06

0.05

250R145

0.26

0.20

0.17

0.145

0.12

0.11

0.09

0.08

0.06

250R145T

0.26

0.20

0.17

0.145

0.12

0.11

0.09

0.08

0.06

250R180

0.28

0.23

0.21

0.18

0.16

0.13

0.10

0.11

0.083

250R180T

0.28

0.23

0.21

0.18

0.16

0.13

0.10

0.11

0.083

Temperature Rerating

Temperature Rerating Curve

-40 -30 -20

-10

0

10

20

30

40

5060

70

80

10%

30%

50%

70%

90%

110%

130%

150%

170%

Temperature (°C)

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.

0.01

0.1

1

10

100

1000

10000

100000

250R

0.1

1

10

100

Current in Amperes