Littelfuse 0273005.V Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0273005.V is a 5 A, 125 V AC/DC board mount fuse in the MICRO™ 273 series, designed for through-hole radial mounting applications. This fast-blow fuse is rated for 10 kA breaking capacity and operates across -55°C to 85°C. The part maintains active product status with full compliance to CSA, QPL, and UL approval agencies. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series and manufacturer specifications.

Substiute Parts

0273005.V

Littelfuse Inc.In Stock: 8430273005.V Datasheet

Current PartRFQ

0273005.H

Littelfuse Inc.In Stock: 11830273005.H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0273005.V are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following key parameters that must remain identical:

• Current Rating: 5 A
• Voltage Rating (AC/DC): 125 V
• Response Time: Fast Blow
• Mounting Type: Through Hole
• Package / Case: Radial, Can, Vertical
• Breaking Capacity @ Rated Voltage: 10 kA
• Size / Dimension: 0.250" Dia x 0.350" H (6.35mm x 8.89mm)
• DC Cold Resistance: 0.0156 Ohms
• Melting I²t: 2.21
• Approval Agencies: CSA, QPL, UL
• RoHS Status: ROHS3 Compliant

The substitute part 0273005.H meets all these criteria and is manufactured by Littelfuse Inc. within the same MICRO™ 273 series.

Parameter Comparison

Engineering Selection Recommendations

Both the 0273005.V and 0273005.H are active products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and lead time considerations. The 0273005.H currently has higher inventory availability (1143 Pcs) compared to the 0273005.V (776 Pcs). Both parts maintain full compliance with CSA, QPL, and UL certifications, ROHS3 compliance, and REACH unaffected status. Either part is suitable for direct substitution in applications requiring a 5 A, 125 V AC/DC fast-blow board mount fuse with 10 kA breaking capacity.

Frequently Asked Questions (FAQ)

Q: Can the 0273005.H be used as a direct replacement for the 0273005.V?

A: Yes. Both parts are identical in all critical electrical and mechanical parameters, including current rating, voltage rating, response time, mounting type, package dimensions, and approval certifications.

Q: Are there any differences in performance between these two parts?

A: No. The parts share identical specifications for breaking capacity, melting I²t, DC cold resistance, operating temperature range, and all other electrical characteristics.

Q: What determines whether a part can substitute for the 0273005.V?

A: A substitute part must maintain identical values for current rating (5 A), voltage ratings (125 V AC/DC), response time (Fast Blow), mounting type (Through Hole), package configuration (Radial, Can, Vertical), physical dimensions (0.250" Dia x 0.350" H), breaking capacity (10 kA), and approval agency certifications (CSA, QPL, UL).

Q: Are both parts RoHS compliant?

A: Yes. Both the 0273005.V and 0273005.H are ROHS3 compliant and REACH unaffected.

Q: What is the physical footprint compatibility between these parts?

A: Both parts have identical dimensions of 0.250" Dia x 0.350" H (6.35mm x 8.89mm) and use the same radial, can, vertical package configuration, ensuring direct PCB footprint compatibility.