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0251.500MRT1  Littelfuse PICO II 0251.500MRT1 is a 500 mA, 125 V very fast-acting board mount fuse in an axial through-hole package.
Mfr Part #:

0251.500MRT1

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse PICO II 0251.500MRT1 is a 500 mA, 125 V very fast-acting board mount fuse in an axial through-hole package.
Total Stock: 755 pcs

0251.500MRT1 Available from 1 distributor

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755 pcs
755 pcs On Request 1 On Request On Request On Request On Request On Request

0251.500MRT1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity
Breaking Capacity @ Rated Voltage
Current Rating
Current Rating (Amps)
Fuse Type
Lead Style
Medical Grade
Melting I²t
Mounting Type
Nominal Cold Resistance
Nominal Voltage Drop
Operating Temperature
Package Type
Response Time
Tape & Reel
Voltage Rating

0251.500MRT1 Description

Short technical summary and product information.

The Littelfuse 0251.500MRT1 is from the PICO II series of very fast-acting fuses. It is designed for overcurrent protection in space-constrained applications. This fuse is rated at 500 mA and 125 V AC/DC with a breaking capacity of 50 A AC and 300 A DC. It features a fast blow response time and a nominal melting I²t of 0.0598 A²s. The fuse has a nominal cold resistance of 0.302 Ω and a nominal voltage drop of 0.2165 V. It is housed in an axial package designed for through-hole mounting, with dimensions of 0.110" Dia x 0.280" L (2.80mm x 7.11mm). The operating temperature range is -55°C to 125°C. The part has approvals from CCC, CSA, cURus, and TUV.

0251.500MRT1 Quick Information

Product Type: Fuse
Series: 251
Canonical Name: Littelfuse 0251.500MRT1 PICO II Very Fast-Acting Fuse, 500mA, 125V, Axial Through Hole
Subcategory: Very Fast-Acting Fuse

0251.500MRT1 Compliance

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

0251.500MRT1 Features

  • Very fast-acting fuse with 500 mA rating.
  • Rated for 125 V AC or DC operation.
  • High interrupting rating of 50 A AC.
  • Axial through-hole package for easy mounting.
  • Wide operating temperature range from -55°C.

0251.500MRT1 Applications

  • Overcurrent protection for flat-panel displays.
  • Used in LCD monitor backlight inverters.
  • Protects power supply input circuits.
  • Suitable for medical equipment secondary protection.
  • Ideal for space-constrained board designs.

0251.500MRT1 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0251.500MRT1 fuse?

The fuse is rated at 500 mA (0.5 A).

What is the voltage rating for this Littelfuse fuse?

It is rated for 125 V AC and DC.

What is the breaking capacity of the 0251.500MRT1?

The breaking capacity is 50 A AC and 300 A DC at the rated voltage.

How fast does the 0251.500MRT1 fuse blow?

It is a very fast-acting (fast blow) fuse.

What package type is the 0251.500MRT1?

It comes in an axial package for through-hole mounting.

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