0251.500HAT1L Board mount fuse rated 500mA at 125VAC/VDC with fast-blow characteristic. Axial through-hole package, 0.110" diameter.
Mfr Part #:

0251.500HAT1L

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Board mount fuse rated 500mA at 125VAC/VDC with fast-blow characteristic. Axial through-hole package, 0.110" diameter.
Total Stock: 10 pcs

0251.500HAT1L Available from 1 distributor

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0251.500HAT1L 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
Melting I²t
Mounting Type
Nominal Cold Resistance
Nominal Voltage Drop
Operating Temperature
Package / Case
Response Time
Size
Size / Dimension
Voltage Rating

0251.500HAT1L Description

Short technical summary and product information.

The Littelfuse 0251.500HAT1L is a PICO II 251 Series very fast-acting board mount fuse, designed for secondary protection in space-constrained applications. It is rated for 0.5A (500mA) at 125VAC/VDC and features a fast-blow response to protect sensitive circuits from overcurrent events.

 

Electrical characteristics include a breaking capacity of 50A AC and 300A DC, a nominal cold resistance of 0.302 Ohm, a melting I²t of 0.0598 A²s, and a nominal voltage drop of 0.2165V at rated current. The fuse operates over a wide temperature range of -55°C to 125°C.

 

The component comes in an axial through-hole package (0.110" diameter x 0.280" length) for easy PCB mounting. It is approved by CCC, CSA, cURus, and TUV agencies, ensuring compliance with international safety standards.

0251.500HAT1L Quick Information

Product Type: Fuse
Series: 251
Canonical Name: 0251.500HAT1L — PICO II 251 Series Very Fast-Acting Board Mount Fuse
Subcategory: Axial Fuses

0251.500HAT1L Compliance

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

0251.500HAT1L Features

  • Fast-blow response for sensitive circuit protection.
  • Board mount axial through-hole package.
  • Rated 500mA at 125VAC/VDC.
  • Breaking capacity 50A AC / 300A DC.
  • Wide operating temperature -55°C to 125°C.

0251.500HAT1L Applications

  • Secondary protection in space-constrained applications.
  • Overcurrent protection in power supplies and lighting systems.
  • Suitable for LCD monitor backlight inverters.
  • Used in medical equipment and office machines.

0251.500HAT1L FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the Littelfuse 0251.500HAT1L?

The current rating is 0.5A (500mA).

What voltage rating does this fuse have?

It is rated for 125VAC and 125VDC.

What is the breaking capacity of the 0251.500HAT1L?

The breaking capacity is 50A at 125VAC and 300A at 125VDC.

Is this fuse fast-acting or slow-blow?

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

What package does the 0251.500HAT1L come in?

It comes in an axial through-hole package measuring 0.110" diameter by 0.280" length.

What is the operating temperature range of this fuse?

It operates from -55°C to 125°C.

What agency approvals does the 0251.500HAT1L have?

It is approved by CCC, CSA, cURus, and TUV.

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