Littelfuse 0279002.V Equivalent & Substitute Parts

Part Overview

The Littelfuse 0279002.V is a 2 A, 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. Substitute parts become necessary when addressing supply chain constraints, inventory availability, or design revision requirements while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

0279002.V

Littelfuse Inc.In Stock: 11840279002.V Datasheet

Current PartRFQ

0273002.H

Littelfuse Inc.In Stock: 14280273002.H Datasheet

Parametric EquivalentRFQ

0273002.V

Littelfuse Inc.In Stock: 12240273002.V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0279002.V are qualified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

• Current Rating: 2 A (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 @ Rated Voltage: 10 kA (exact match required)
• Size / Dimension: 0.250" Dia x 0.350" H (exact match required)
• DC Cold Resistance: 0.0425 Ohms (exact match required)
• Operating Temperature Range: -55°C ~ 85°C (exact match required)
• Melting I²t: 0.3 (exact match required)
• Approval Agencies: CSA, QPL, UL (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The substitute parts identified (0273002.H and 0273002.V) meet all specified electrical and mechanical parameters, differing only in series designation (MICRO™ 273 versus MICRO™ 279) while maintaining full functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All three parts (0279002.V, 0273002.H, and 0273002.V) maintain Active product status with identical electrical and mechanical specifications. Selection between these parts is based on inventory availability and supply chain considerations rather than technical performance differentiation. All parts carry CSA, QPL, and UL approvals, and all are ROHS3 compliant, meeting regulatory requirements for equivalent circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can 0273002.H or 0273002.V be used as direct replacements for 0279002.V?

A: Yes. Both substitute parts meet all specified electrical parameters (2 A, 125 V AC/DC, fast-blow response), mechanical dimensions (0.250" Dia x 0.350" H), and performance characteristics (10 kA breaking capacity, 0.0425 Ohms DC cold resistance). The series designation difference (MICRO™ 273 versus MICRO™ 279) does not affect functional equivalence.

Q: Are there any package or mounting differences between these parts?

A: No. All three parts use identical through-hole mounting configuration with radial, can, vertical package orientation and matching physical dimensions.

Q: Do all substitute parts carry the same certifications?

A: Yes. All parts are certified by CSA, QPL, and UL, and all are ROHS3 compliant with REACH Unaffected status.

Q: What is the difference between the 0273002.H and 0273002.V variants?

A: Both parts are electrically and mechanically identical. The designation suffix (.H versus .V) indicates packaging or tape configuration variants, but electrical performance and physical specifications remain equivalent.

Q: Are operating temperature ranges identical across all three parts?

A: Yes. All parts operate within the -55°C ~ 85°C temperature range with identical melting I²t characteristics (0.3).