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-R Series - PTC Resettable Fuses

Product Dimensions (see previous page for dimensions)

A

E

B

D

B

D

C

Style 1

A

E

B

D

C

Style 2

A

E

C

Style 3

Style 4

AE

B

D

C

NOTE: Kinked lead option is

available for board standoff.

Contact factory for details.

NOTE: Also available with

straight leads. Contact

factory for details.

Thermal Derating Chart - Ihold / Itrip (Amps)

Model

Ambient Operating Temperature

-40 ºC

-20 ºC

0 ºC

23 ºC

40 ºC

50 ºC

60 ºC

70 ºC

85 ºC

MF-R005

0.08 / 0.16

0.07 / 0.14

0.06 / 0.12

0.05 / 0.10

0.04 / 0.08

0.04 / 0.08

0.03 / 0.07

0.03 / 0.07

0.02 / 0.05

MF-R010

0.16 / 0.32

0.14 / 0.28

0.12 / 0.24

0.10 / 0.20

0.08 / 0.16

0.07 / 0.14

0.06 / 0.12

0.05 / 0.10

0.04 / 0.08

MF-R017

0.26 / 0.52

0.23 / 0.46

0.20 / 0.40

0.17 / 0.34

0.14 / 0.28

0.12 / 0.24

0.11 / 0.22

0.09 / 0.18

0.07 / 0.14

MF-R020

0.31 / 0.62

0.27 / 0.54

0.24 / 0.48

0.20 / 0.40

0.16 / 0.32

0.14 / 0.28

0.13 / 0.26

0.11 / 0.22

0.08 / 0.16

MF-R025

0.39 / 0.78

0.34 / 0.68

0.30 / 0.60

0.25 / 0.50

0.20 / 0.40

0.18 / 0.36

0.16 / 0.32

0.14 / 0.28

0.10 / 0.20

MF-R030

0.47 / 0.94

0.41 / 0.82

0.36 / 0.72

0.30 / 0.60

0.24 / 0.48

0.22 / 0.44

0.19 / 0.38

0.16 / 0.32

0.12 / 0.24

MF-R040

0.62 / 1.24

0.54 / 1.08

0.48 / 0.96

0.40 / 0.80

0.32 / 0.64

0.29 / 0.58

0.25 / 0.50

0.22 / 0.44

0.16 / 0.32

MF-R050

0.78 / 1.56

0.68 / 1.36

0.60 / 1.20

0.50 / 1.00

0.41 / 0.82

0.36 / 0.72

0.32 / 0.64

0.27 / 0.54

0.20 / 0.40

MF-R065

1.01 / 2.02

0.88 / 1.76

0.77 / 1.54

0.65 / 1.30

0.53 / 1.06

0.47 / 0.94

0.41 / 0.82

0.35 / 0.70

0.26 / 0.52

MF-R075

1.16 / 2.32

1.02 / 2.04

0.89 / 1.78

0.75 / 1.50

0.61 / 1.22

0.54 / 1.08

0.47 / 0.94

0.41 / 0.82

0.30 / 0.60

MF-R090

1.40 / 2.80

1.22 / 2.44

1.07 / 2.14

0.90 / 1.80

0.73 / 1.46

0.65 / 1.30

0.57 / 1.14

0.49 / 0.98

0.36 / 0.72

MF-R090-0-9

1.40 / 2.80

1.22 / 2.44

1.07 / 2.14

0.90 / 1.80

0.73 / 1.46

0.65 / 1.30

0.57 / 1.14

0.49 / 0.98

0.36 / 0.72

MF-R110

1.60 / 3.20

1.43 / 2.86

1.27 / 2.54

1.10 / 2.20

0.91 / 1.82

0.85 / 1.70

0.75 / 1.50

0.67 / 1.34

0.57 / 1.14

MF-R135

1.96 / 3.92

1.76 / 3.52

1.55 / 3.10

1.35 / 2.70

1.12 / 2.24

1.04 / 2.08

0.92 / 1.84

0.82 / 1.64

0.70 / 1.40

MF-R160

2.32 / 4.64

2.08 / 4.16

1.84 / 3.68

1.60 / 3.20

1.33 / 2.66

1.23 / 2.46

1.09 / 2.18

0.98 / 1.96

0.83 / 1.66

MF-R185

2.68 / 5.36

2.41 / 4.82

2.13 / 4.26

1.85 / 3.70

1.54 / 3.08

1.42 / 2.84

1.26 / 2.52

1.13 / 2.26

0.96 / 1.92

MF-R250

3.63 / 7.26

3.25 / 6.50

2.88 / 5.76

2.50 / 5.00

2.08 / 4.16

1.93 / 3.86

1.70 / 3.40

1.53 / 3.06

1.30 / 2.60

MF-R250-0-10

3.63 / 7.26

3.25 / 6.50

2.88 / 5.76

2.50 / 5.00

2.08 / 4.16

1.93 / 3.86

1.70 / 3.40

1.53 / 3.06

1.30 / 2.60

MF-R300

4.35 / 8.70

3.90 / 7.80

3.45 / 6.90

3.00 / 6.00

2.49 / 4.98

2.31 / 4.62

2.04 / 4.08

1.83 / 3.66

1.56 / 3.12

MF-R400

5.80 / 11.6

5.20 / 10.4

4.60 / 9.20

4.00 / 8.00

3.32 / 6.64

3.08 / 6.16

2.72 / 5.44

2.44 / 4.88

2.08 / 4.16

MF-R500

7.25 / 14.5

6.50 / 13.0

5.75 / 11.5

5.00 / 10.0

4.15 / 8.30

3.85 / 7.70

3.40 / 6.80

3.05 / 6.10

2.60 / 5.20

MF-R600

8.70 / 17.4

7.80 / 15.6

6.90 / 13.8

6.00 / 12.0

4.98 / 9.96

4.62 / 9.24

4.08 / 8.16

3.66 / 7.32

3.12 / 6.24

MF-R700

10.1 / 20.3

9.10 / 18.2

8.05 / 16.1

7.00 / 14.0

5.81 / 11.6

5.39 / 10.7

4.76 / 9.52

4.27 / 9.44

3.64 / 7.28

MF-R800

11.6 / 23.2

10.4 / 20.8

9.20 / 18.4

8.00 / 16.0

6.64 / 13.2

6.16 / 12.3

5.44 / 10.8

4.88 / 9.76

4.16 / 8.32

MF-R900

13.0 / 26.1

11.7 / 23.4

10.3 / 20.7

9.00 / 18.0

7.47 / 14.9

6.93 / 12.7

6.12 / 12.2

5.49 / 10.9

4.68 / 9.36

MF-R1100

16.1 / 32.0

14.6 / 29.2

13.1 / 26.2

11.0 / 22.1

9.40 / 18.4

8.80 / 17.6

7.80 / 15.6

6.90 / 13.8

5.20 / 10.4