140

Revised: April 3, 2009

©2009 Littelfuse, Inc.

72R Series

Radial Leaded > 72R Series

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/72R.html for current information.

Ambient OperationTemperature

-40°C

-20°C

0°C

23°C

40°C

50°C

60°C

70°C

85°C

Part Number

Hold Current (A)

72R020X

0.31

0.27

0.24

0.20

0.16

0.14

0.13

0.11

0.08

72R025X

0.39

0.34

0.30

0.25

0.20

0.18

0.16

0.14

0.10

72R030X

0.47

0.41

0.36

0.30

0.24

0.22

0.19

0.16

0.12

72R040X

0.62

0.54

0.48

0.40

0.32

0.29

0.25

0.22

0.16

72R050X

0.78

0.68

0.60

0.50

0.41

0.36

0.32

0.27

0.20

72R065X

1.01

0.88

0.77

0.65

0.53

0.47

0.41

0.35

0.26

72R075X

1.16

1.02

0.89

0.75

0.61

0.54

0.47

0.41

0.30

72R090X

1.40

1.22

1.07

0.90

0.73

0.65

0.57

0.49

0.36

72R110X

1.71

1.50

1.31

1.10

0.89

0.79

0.69

0.59

0.44

72R135X

2.09

1.84

1.61

1.35

1.09

0.97

0.85

0.73

0.54

72R160X

2.48

2.18

1.90

1.60

1.30

1.15

1.01

0.86

0.64

72R185X

2.87

2.52

2.20

1.85

1.50

1.33

1.17

1.00

0.74

72R250X

3.88

3.40

2.98

2.50

2.03

1.80

1.58

1.35

1.00

72R300X

4.65

4.08

3.57

3.00

2.43

2.16

1.89

1.62

1.20

72R375X

5.81

5.10

4.46

3.75

3.04

2.70

2.36

2.03

1.50

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.

-40

-30

-20

-10

0

10

20

30

40

50

60

70

80

10%

30%

50%

70%

90%

110%

130%

150%

170%

Temperature (°C)

Temperature Rerating Curve

Temperature Rerating

72R

0.01

0.1

1

10

100

0.1

1

10

100

Current in Amperes