3121.25 The Littelfuse 3121.25 is a 1.25 Amp fast-acting cartridge fuse. It is RoHS3 Compliant and has an MSL of 1.
Mfr Part #:

3121.25

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse 3121.25 is a 1.25 Amp fast-acting cartridge fuse. It is RoHS3 Compliant and has an MSL of 1.
✓ Total Stock: 4,200 pcs
$ Price Range: $0.99

3121.25 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
4,200 pcs
4200 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

3121.25 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current Rating
SVHC Present

3121.25 Description

Short technical summary and product information.

The Littelfuse 3121.25 is a cartridge fuse designed for circuit protection. It features a current rating of 1.25 Amps and is fast-acting.

 

This fuse is manufactured by Littelfuse and falls under the Cartridge Fuses category. It is noted as RoHS3 Compliant and has a Moisture Sensitivity Level (MSL) of 1, indicating it is unaffected by moisture.

 

As a component in the Circuit Protection family, the 3121.25 serves a critical role in safeguarding electrical systems from overcurrents and short circuits. Its fast-acting nature ensures quick response to fault conditions.

3121.25 Quick Information

Product Type: Cartridge Fuse
Series: 312
Canonical Name: Littelfuse 3121.25 Cartridge Fuse
Subcategory: Cartridge Fuse

3121.25 Compliance

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

3121.25 Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

3121.25 Features

  • Rated for 1.25 A current.
  • Fast-acting 3AG cartridge fuse.
  • RoHS3 compliant and REACH unaffected.
  • MSL Level 1 for unlimited floor life.
  • Manufactured by Littelfuse for reliability.

3121.25 Applications

  • Overcurrent protection for sensitive electronic circuits
  • Fast-acting protection for power supply inputs
  • Used in industrial control equipment
  • Ideal for battery charging circuits

3121.25 FAQs

4 frequently asked questions generated from this part’s specifications.
What is the current rating of the Littelfuse 3121.25 fuse?

The Littelfuse 3121.25 fuse has a current rating of 1.25 Amps.

What is the RoHS status of the 3121.25 fuse?

The 3121.25 fuse is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the 3121.25 fuse?

The 3121.25 fuse has an MSL of 1 Unlimited.

What is the REACH status for the 3121.25 fuse?

The 3121.25 fuse is REACH Unaffected.

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