Part

Number

Maximum Ambient Temperature

-40°C

A

-20°C

0°C

20°C

25°C

40°C

50°C

60°C

70°C

80°C

85°C

125°C Typical Activation

SRP

SRP120F

1.9

1.7

1.5

1.20

1.17

1.0

0.9

0.8

0.6

0.5

0.4

SRP175F

2.5

2.2

2.0

1.75

1.68

1.4

1.3

1.2

1.0

0.9

0.8

SRP200F

3.1

2.8

2.5

2.00

1.97

1.7

1.5

1.4

1.2

1.0

0.9

SRP350F

5.3

4.8

4.3

3.50

3.44

3.0

2.7

2.5

2.1

1.8

1.7

SRP420F

6.3

5.7

5.1

4.20

4.11

3.6

3.3

3.0

2.6

2.2

2.1

LR4

LR4-190F

2.8

2.5

2.3

1.9

1.86

1.6

1.5

1.4

1.2

1.1

1.0

LR4-260F

3.8

3.4

3.1

2.6

2.54

2.2

2.0

1.9

1.7

1.4

1.3

LR4-380F

5.4

4.9

4.4

3.8

3.64

3.3

3.0

2.8

2.5

2.3

2.1

LR4-380XF

5.4

4.9

4.4

3.8

3.64

3.3

3.0

2.8

2.5

2.3

2.1

LR4-450F

6.5

5.8

5.3

4.5

4.38

3.9

3.6

3.3

2.9

2.6

2.4

LR4-550F

7.6

6.9

6.2

5.5

5.32

4.7

4.3

4.0

3.6

3.2

3.0

LR4-600F

8.7

7.8

7.1

6.0

5.86

5.2

4.7

4.4

3.9

3.4

3.2

LR4-600XF

8.7

7.8

7.1

6.0

5.86

5.2

4.7

4.4

3.9

3.4

3.2

LR4-730F

10.5

9.5

8.6

7.3

7.13

6.3

5.7

5.4

4.7

4.2

4.0

LR4-900F

12.7

11.4

10.0

9.0

8.50

7.5

6.8

6.2

5.5

4.9

4.5

LR4-1300SSF

17.9

16.2

14.5

13.0

12.40

11.1

10.3

9.5

8.6

7.7

7.2

* Product electrical characteristics determined at 25°C.

Part

Number

Maximum Ambient Temperature

-40°C

A

-20°C

0°C

20°C

25°C

40°C

50°C

60°C

70°C

75°C

80°C

85°C

90°C

120°C Typical Activation

MXP*

MXP180

—

—

2.45

—

1.8

—

—

0.80

—

—

—

—

—

MXP190BB

—

—

2.6

—

1.9

—

—

0.85

—

—

—

—

—

MXP250K

—

—

3.6

—

2.5

—

—

1.3

—

—

—

—

—

MXP270

—

—

3.8

—

2.7

—

—

1.4

—

—

—

—

0.3

MXP310

—

—

5.0

—

3.1

—

—

1.9

—

1.0

—

—

—

MXP370BD

—

—

5.0

—

3.7

—

—

1.9

—

—

—

—

—

120˚C Typical Activation

MGP

MGP450

—

—

—

—

4.5

—

—

2.6

—

—

—

—

—

MGP500

—

—

—

—

5.0

—

—

3.0

2.0

—

—

—

—

Table B2 —Thermal Derating [Hold Current (A) at AmbientTemperature (°C)]

Part

Number

Maximum Ambient Temperature

-40°C

A

-20°C

0°C

20°C

25°C

40°C

50°C

60°C

70°C

80°C

85°C

85°C Typical Activation

VLR*

VLR170F

3.5

2.9

2.4

1.84

1.70

1.2

1.0

0.7

0.3

—

—

VLR175F

3.5

2.9

2.4

1.87

1.75

1.3

1.0

0.8

0.3

—

—

VLR175LF

3.5

2.9

2.4

1.87

1.75

1.3

1.0

0.8

0.3

—

—

VLR230F

5.0

4.2

3.4

2.52

2.30

1.7

1.3

0.9

0.4

—

—

90°C Typical Activation

VLP*

VLP120UF

2.4

2.1

1.8

1.30

1.20

1.0

0.7

0.6

0.3

0.2

0.1

VLP175UAF

3.2

2.7

2.3

1.70

1.75

1.2

1.0

0.9

0.5

0.2

0.1

VLP210F

4.3

3.6

2.9

2.31

2.10

1.6

1.3

1.0

0.6

0.3

0.1

VLP220F

4.5

3.8

3.0

2.45

2.20

1.7

1.4

1.1

0.7

0.3

0.1

VLP270F

5.6

4.7

4.0

3.05

2.70

2.2

1.7

1.4

0.9

0.4

0.1

VTP*

VTP110F

2.0

1.7

1.4

1.12

1.10

0.85

0.75

0.7

0.4

0.2

0.1

VTP170F

3.2

2.7

2.2

1.80

1.70

1.3

1.0

0.8

0.5

0.3

0.1

VTP170XSF

3.2

2.7

2.2

1.80

1.70

1.3

1.0

0.8

0.5

0.3

0.1

VTP175F

3.2

2.7

2.2

1.84

1.75

1.3

1.0

0.8

0.5

0.3

0.1

VTP175LF

3.2

2.7

2.2

1.84

1.75

1.3

1.0

0.8

0.5

0.3

0.1

VTP210GF

4.1

3.5

2.9

2.26

2.10

1.6

1.3

1.0

0.7

0.4

0.1

VTP210SF

4.1

3.5

2.9

2.26

2.10

1.6

1.3

1.0

0.7

0.4

0.1

RoHS Compliant, ELV Compliant

Specifications subject to change without notice. ©2016 Littelfuse, Inc.

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