Littelfuse 0274.062V Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0274.062V is a 62 mA, 125 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in compact electronic assemblies. This component belongs to the MICRO™ 274 series and maintains active product status with full regulatory compliance. Substitute parts may be required due to inventory constraints, supply chain disruptions, or design revision requirements while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

0274.062V

Littelfuse Inc.In Stock: 10090274.062V Datasheet

Current PartRFQ

0273.062V

Littelfuse Inc.In Stock: 8650273.062V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0273.062V qualifies as a parametric equivalent to the 0274.062V based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

• Current Rating: 62 mA (exact match required)
• Voltage Rating: 125 V AC / 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 10 kA (exact match required)
• Melting I²t: 0.000115 (exact match required)
• Mounting Type: Through Hole (exact match required)
• Physical Dimensions: 0.250" Dia x 0.350" H (exact match required)
• DC Cold Resistance: 2.32 Ohms (exact match required)
• Regulatory Compliance: CSA, QPL, UL (exact match required)

The 0273.062V belongs to the MICRO™ 273 series and maintains full compatibility with applications designed for the 0274.062V, with no functional or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

Both the 0274.062V and 0273.062V maintain active product status with identical regulatory certifications (CSA, QPL, UL) and full ROHS3 compliance. Selection between these parts is based on availability and supply chain requirements rather than functional differentiation. The 0273.062V operates across the temperature range of -55°C to 85°C, providing defined thermal performance boundaries. Both components are suitable for direct substitution in applications requiring 62 mA protection at 125 V AC/DC with fast blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 0273.062V replace the 0274.062V in existing designs?

A: Yes. The 0273.062V is a parametric equivalent with identical electrical ratings (62 mA, 125 V AC/DC), response time (fast blow), breaking capacity (10 kA), physical dimensions (0.250" Dia x 0.350" H), and regulatory approvals (CSA, QPL, UL). No circuit modifications or PCB layout changes are required.

Q: Are there differences in series designation between these parts?

A: The 0274.062V belongs to the MICRO™ 274 series, while the 0273.062V belongs to the MICRO™ 273 series. Series designation reflects internal product line organization but does not affect electrical or mechanical compatibility.

Q: What is the operating temperature range for each part?

A: The 0274.062V does not specify an operating temperature range in the provided data. The 0273.062V operates from -55°C to 85°C. Both parts are suitable for standard industrial and consumer electronics applications within normal operating conditions.

Q: Do both parts have identical package dimensions?

A: Yes. Both the 0274.062V and 0273.062V use radial, can, vertical package configuration with dimensions of 0.250" Dia x 0.350" H (6.35 mm x 8.89 mm). PCB footprints and mounting hole spacing are identical.

Q: Are there inventory considerations for part selection?

A: The 0274.062V has 993 pieces in stock, while the 0273.062V has 763 pieces in stock. Selection may depend on delivery timeline and supply availability requirements.