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0451.500MRL Board mount fuse, 500mA, 125VAC/VDC, fast blow, surface mount package.
Mfr Part #:

0451.500MRL

Available from 6 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Board mount fuse, 500mA, 125VAC/VDC, fast blow, surface mount package.
Total Stock: 49,916 pcs

0451.500MRL Available from 6 distributors

Authorised
Non-Authorised

0451.500MRL Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Approval Agency
Automotive Grade
Breaking Capacity
Breaking Capacity @ Rated Voltage
Current Rating
Current Rating (Amps)
Fuse Type
Halogen Free
Height
Industrial Grade
Length
Medical Grade
Melting I²t
Military Grade
Mounting Type
Operating Temperature
Package / Case
Response Time
Tape & Reel
Voltage Rating
Width

0451.500MRL Description

Short technical summary and product information.

The Littelfuse 0451.500MRL is a 500mA, 125V very fast-acting fuse in a surface mount package (2-SMD, square end block). It is part of the 451 series of Nano2 SMF fuses designed for overcurrent protection in secondary side circuits. Key specifications include a breaking capacity of 50A at rated voltage, melting I²t of 0.0795 A²s, and an operating temperature range of -55°C to 125°C. This fuse is RoHS compliant and halogen free, with approvals from CSA and UL. It is suitable for use in notebook PCs, LCD displays, power supplies, networking equipment, and other electronic devices requiring reliable overcurrent protection.

0451.500MRL Quick Information

Product Type: Fuse
Series: 451
Canonical Name: Littelfuse 0451.500MRL 500mA 125V Fast Blow Board Mount Fuse
Subcategory: Board Mount Fuses

0451.500MRL Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

0451.500MRL Features

  • 500mA current rating with fast blow response.
  • Rated for 125VAC/VDC operation.
  • 50A breaking capacity at rated voltage.
  • Surface mount package for compact designs.
  • RoHS compliant and halogen free.

0451.500MRL Applications

  • Overcurrent protection in notebook PCs.
  • Used in LCD display and TV circuits.
  • Suitable for power supply and networking equipment.
  • Ideal for battery charging circuit protection.

0451.500MRL FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0451.500MRL?

500 mA.

What is the voltage rating of the 0451.500MRL?

125 V.

What is the breaking capacity of the 0451.500MRL?

50A at 125VAC/VDC.

What is the response time of the 0451.500MRL?

Fast Blow (very fast-acting).

What is the package/case of the 0451.500MRL?

2-SMD, Square End Block.

What is the operating temperature range of the 0451.500MRL?

-55°C to 125°C.

What approvals does the 0451.500MRL have?

CSA and UL.

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