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04291.25WRM Fuse Board Mount 1.25A 63VAC/VDC Fast Blow Surface Mount 1206. Littelfuse 429 series.
Mfr Part #:

04291.25WRM

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Fuse Board Mount 1.25A 63VAC/VDC Fast Blow Surface Mount 1206. Littelfuse 429 series.
Total Stock: 1,335 pcs

04291.25WRM Available from 1 distributor

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,335 pcs
1335 pcs On Request 1 On Request On Request On Request On Request On Request

04291.25WRM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Body Material
Cold Resistance
Current Rating
Current Rating (Amps)
Failure Rate
Fuse Type
Height
Insulation Resistance
Interrupting Rating
Length
Marking Code
Melting I²t
Mounting Type
Operating Temperature
Package / Case
Response Time
Standard Package Qty
Tape & Reel
Termination Material
Termination Style
Voltage Rating
Width

04291.25WRM Description

Short technical summary and product information.

The Littelfuse 04291.25WRM is a 1.25A, 63V fast blow surface mount fuse from the 429 series. It is designed for overcurrent protection in a compact 1206 (3216 metric) package.

 

Electrical specifications include a cold resistance of 0.07475 ohms, melting I²t of 0.065 A²s, and an interrupting rating of 50A at rated voltage. The response time is fast blow, with a maximum opening time of 5 seconds at 200% of rated current.

 

The fuse is built on an epoxy substrate with copper/nickel/tin-lead terminations. Operating temperature range is -55°C to 90°C. It is packaged in tape and reel with 3000 pieces per reel per EIA-RS481-1.

04291.25WRM Quick Information

Product Type: Fuse
Series: 429
Canonical Name: Littelfuse 429 Series 1.25A 63V Fast Blow SMD Fuse
Subcategory: Fuses

04291.25WRM Compliance

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

04291.25WRM Features

  • Surface mount 1206 package for compact designs.
  • Fast blow response with 5-second max at 200% current.
  • Rated for 63VAC/VDC with 50A interrupting capacity.
  • Operating temperature range from -55°C to 90°C.
  • Melting I²t of 0.065 A²s for coordination.

04291.25WRM Applications

  • Overcurrent protection in power supply circuits.
  • Protection of DC/DC converter input stages.
  • Used in industrial control and automation equipment.
  • Suitable for battery management systems.

04291.25WRM FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the 04291.25WRM?

1.25A.

What is the voltage rating?

63VAC/VDC.

What is the interrupting rating?

50A at rated voltage (63V).

What is the response time?

Fast blow; opens within 5 seconds at 200% of rated current.

What package is the fuse available in?

1206 (3216 metric) surface mount package.

What is the melting I²t?

0.065 A²s.

What is the operating temperature range?

-55°C to 90°C.

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