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©2006 Littelfuse

250R Series

Specifications are subject to change without notice.

2

Electronics Designers Guide

Radial Leaded

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

50

60

70

80

10%

30%

50%

70%

90%

110%

130%

150%

170%

Temperature (°C)

Average Time Current Curves

CURRENT IN AMPERES

0.001

0.010

0.100

1

10

100

1000

10000

100000

0.100

1

10

100

0.02

250R Series

Specifications are subject to change without notice.

Note: 1.00 means the number one with two decimal places.

AKL V3.9 06.05.18

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.