Littelfuse 0274.015V Equivalent & Substitute Parts

Part Overview

The Littelfuse 0274.015V is a 15 mA, 125 V AC/DC board mount fuse in radial, can, vertical package configuration. This component is classified as Active product status and is designed for through-hole mounting applications requiring fast-blow response characteristics. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when design requirements permit cross-platform compatibility within the same electrical and mechanical specifications.

Substiute Parts

0274.015V

Littelfuse Inc.In Stock: 10780274.015V Datasheet

Current PartRFQ

0279.015V

Littelfuse Inc.In Stock: 9520279.015V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0274.015V are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

• Current Rating: 15 mA (exact match required)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 10 kA (exact match required)
• Physical Dimensions: 0.250" Dia x 0.350" H (exact match required)
• DC Cold Resistance: 44 Ohms (exact match required)
• Melting I²t: 1.23E-06 (exact match required)

The Littelfuse 0279.015V meets all substitution criteria and is classified as a parametric equivalent. Both parts belong to the Littelfuse MICRO™ series and maintain identical electrical performance and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0274.015V and 0279.015V are Active product status components with identical electrical specifications and mechanical form factors. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

The 0279.015V is a direct parametric equivalent suitable for applications where the 0274.015V is unavailable. Both components carry CSA, QPL, and UL approvals, ensuring compliance with industry standards and regulatory requirements. Both maintain ROHS3 compliance and are unaffected by REACH regulations.

Component selection should prioritize availability and lead time requirements, as electrical and mechanical performance are equivalent across both part numbers.

Frequently Asked Questions (FAQ)

Q: Can the 0279.015V be used as a direct replacement for the 0274.015V?

A: Yes. The 0279.015V is a parametric equivalent with identical current rating (15 mA), voltage ratings (125 V AC/DC), response time (Fast Blow), package configuration (Radial, Can, Vertical), and all electrical characteristics. Direct substitution is supported without circuit modification.

Q: Are there any differences in approval certifications between these parts?

A: No. Both the 0274.015V and 0279.015V carry identical approvals: CSA, QPL, and UL. Both are ROHS3 compliant and REACH unaffected.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of current rating (15 mA), voltage ratings (125 V AC and 125 V DC), response time (Fast Blow), mounting type (Through Hole), package configuration (Radial, Can, Vertical), breaking capacity (10 kA), physical dimensions (0.250" Dia x 0.350" H), DC cold resistance (44 Ohms), and melting I²t (1.23E-06).

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts share identical dimensions of 0.250" Dia x 0.350" H (6.35 mm x 8.89 mm), ensuring mechanical compatibility in through-hole PCB applications.

Q: What is the difference between the MICRO™ 274 and MICRO™ 279 series designations?

A: The series designation reflects internal Littelfuse product line organization. Both series maintain identical electrical and mechanical specifications for this 15 mA, 125 V rating. Series designation does not affect functional compatibility or performance characteristics.