Littelfuse 0262.125V Fuse Board Mount - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0262.125V is a 125 mA, 125 V AC/DC board mount fuse in the Micro™ 262 series. This fast-blow fuse is designed for through-hole radial mounting in vertical orientation and is actively produced. Equivalent parts may be required due to inventory constraints, design revisions, or supply chain considerations while maintaining identical electrical and mechanical specifications.

Substiute Parts

0262.125V

Littelfuse Inc.In Stock: 8060262.125V Datasheet

Current PartRFQ

0269.125V

Littelfuse Inc.In Stock: 9680269.125V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0269.125V qualifies as a parametric equivalent to the 0262.125V based on identical electrical and mechanical specifications. Both parts share the following critical substitution parameters:

• Current Rating: 125 mA
• Voltage Rating: 125 V AC / 125 V DC
• Response Time: Fast Blow
• Mounting Configuration: Through Hole, Radial, Can, Vertical
• Breaking Capacity: 10 kA
• Physical Dimensions: 0.235" Dia x 0.290" H (5.97 mm x 7.37 mm)
• DC Cold Resistance: 1 Ohm
• Operating Temperature Range: -55°C to 125°C
• Approval Agencies: CSA, QPL, UL
• Compliance: ROHS3 Compliant, REACH Unaffected

The substitution is valid across both AC and DC applications within the specified voltage and current parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 0262.125V and 0269.125V are active products from Littelfuse Inc. with identical electrical performance, mechanical compatibility, and regulatory compliance. Selection between these parts may be based on inventory availability or supply chain requirements without compromising circuit protection performance or board-level integration.

Both parts carry CSA, QPL, and UL approvals, confirming suitability for applications requiring third-party certification. ROHS3 compliance and REACH unaffected status ensure environmental and regulatory alignment for global deployment.

Frequently Asked Questions (FAQ)

Q: Can the 0269.125V replace the 0262.125V in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including current rating, voltage rating, response time, physical dimensions, and mounting configuration. Direct substitution is valid without circuit redesign.

Q: Are there any differences in breaking capacity or fault protection?

A: No. Both parts have identical breaking capacity of 10 kA at rated voltage, ensuring equivalent protection performance in fault conditions.

Q: Do both parts support AC and DC applications?

A: Yes. Both the 0262.125V and 0269.125V are rated for 125 V AC and 125 V DC operation, making them suitable for dual-voltage circuit protection.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.235" diameter by 0.290" height (5.97 mm x 7.37 mm) and use identical radial, can, vertical through-hole mounting, ensuring PCB footprint compatibility.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 125°C, supporting applications in standard and extended temperature environments.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for global markets.