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025103.5MRT1L Board mount fuse from Littelfuse, rated 3.5A at 125VAC/VDC. Very fast-acting with axial leads and 50A AC / 300A DC interrupting rating.
Mfr Part #:

025103.5MRT1L

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Board mount fuse from Littelfuse, rated 3.5A at 125VAC/VDC. Very fast-acting with axial leads and 50A AC / 300A DC interrupting rating.
Total Stock: 1,000 pcs

025103.5MRT1L Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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1,000 pcs
1000 pcs On Request 1 On Request On Request On Request On Request On Request

025103.5MRT1L Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity @ Rated Voltage
Breaking Capacity AC
Breaking Capacity DC
Cold Resistance
Current Rating
Current Rating (Amps)
Fuse Type
Halogen Free
Lead Style
Medical Grade
Melting I²t
Mounting Type
Operating Temperature
Package / Case
Response Time
SVHC Present
Size / Dimension
Tape & Reel
Termination Style
Voltage Drop
Voltage Rating

025103.5MRT1L Description

Short technical summary and product information.

The 025103.5MRT1L is a board mount fuse from Littelfuse, part of the 251 Series PICO II family. It is a very fast-acting fuse designed for space-constrained applications requiring reliable overcurrent protection.

 

Electrical specifications include a current rating of 3.5A, voltage rating of 125V AC/DC, and interrupting ratings of 50A AC and 300A DC. The fuse has a fast blow response time, melting I²t of 1.58 A²s, nominal cold resistance of 0.024 Ω, and nominal voltage drop of 0.1205 V.

 

The component is packaged in an axial lead through-hole format with dimensions 0.110" diameter by 0.280" length (2.80mm x 7.11mm). It operates over a temperature range of -55°C to 125°C. Agency approvals include CSA, cURus, PSE, and TUV.

025103.5MRT1L Quick Information

Product Type: Board Mount Fuse
Series: 251
Canonical Name: Littelfuse 251 Series PICO II Very Fast-Acting Fuse, 3.5A, 125VAC/VDC, Axial Lead
Subcategory: Fast-Acting Fuse

025103.5MRT1L Compliance

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

025103.5MRT1L Features

  • Rated for 3.5A at 125VAC/VDC.
  • Very fast-acting response time.
  • 50A AC and 300A DC breaking capacity.
  • Axial lead through-hole mounting package.
  • Operating temperature range -55°C to 125°C.

025103.5MRT1L Applications

  • Suitable for LCD backlight inverter circuits.
  • Used in power supply secondary protection.
  • Ideal for space-constrained board level applications.

025103.5MRT1L FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 025103.5MRT1L?

3.5 A

What is the voltage rating?

125 V AC/DC

What is the breaking capacity?

50 A AC and 300 A DC

What is the response time?

Fast Blow (Very Fast-Acting)

What is the package type?

Axial, through-hole mount

What is the melting I²t value?

1.58 A²s

What is the operating temperature range?

-55°C to 125°C

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