Littelfuse 0272.062V Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0272.062V is a 62 mA, 125 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in electronic circuits requiring overcurrent protection. This component is part of the MICRO™ 272 series and maintains active product status with full regulatory compliance. Substitute parts may be required due to inventory constraints, supply chain considerations, or design revision requirements while maintaining identical electrical and mechanical performance.

Substiute Parts

0272.062V

Littelfuse Inc.In Stock: 20100272.062V Datasheet

Current PartRFQ

0278.062V

Littelfuse Inc.In Stock: 10620278.062V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0278.062V qualifies as a parametric equivalent to the 0272.062V based on strict alignment of all critical electrical and mechanical specifications. Substitution eligibility is determined by the following parameters:

• Current Rating: 62 mA (identical)
• Voltage Rating: 125 V AC / 125 V DC (identical)
• Response Time: Fast Blow (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: Radial, Can, Vertical (identical)
• Breaking Capacity @ Rated Voltage: 10 kA (identical)
• Operating Temperature Range: -55°C to 125°C (identical)
• Physical Dimensions: 0.235" Dia x 0.287" H (5.97 mm x 7.30 mm) (identical)
• DC Cold Resistance: 2.32 Ohms (identical)
• Melting I²t: 0.000115 (identical)
• Regulatory Compliance: CSA, QPL, UL (identical)
• RoHS Status: ROHS3 Compliant (identical)

The primary distinction between these parts is the series designation (MICRO™ 272 versus MICRO™ 278), which does not affect electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 0272.062V and 0278.062V are active products from Littelfuse Inc. with identical electrical specifications and mechanical form factors. Selection between these parts should be based on availability and supply chain requirements. Both components carry full regulatory certifications (CSA, QPL, UL) and maintain ROHS3 compliance, ensuring compatibility with modern manufacturing and environmental standards. The parts are functionally interchangeable in all circuit applications requiring 62 mA fast-blow fuse protection at 125 V AC/DC ratings.

Frequently Asked Questions (FAQ)

Q: Can the 0278.062V be used as a direct replacement for the 0272.062V?

A: Yes. The 0278.062V is a parametric equivalent with identical current rating, voltage rating, response time, mounting type, physical dimensions, and regulatory certifications. Direct substitution is supported without circuit modification.

Q: What is the difference between the MICRO™ 272 and MICRO™ 278 series?

A: The series designation indicates different product lines within Littelfuse's fuse portfolio. For the 0272.062V and 0278.062V, all electrical and mechanical parameters are identical, making them functionally equivalent.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts measure 0.235" diameter by 0.287" height (5.97 mm x 7.30 mm) and use identical radial, can, vertical through-hole mounting configurations.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 0272.062V and 0278.062V carry CSA, QPL, and UL approvals and are ROHS3 compliant.

Q: What is the breaking capacity of these fuses?

A: Both parts have a breaking capacity of 10 kA at rated voltage (125 V AC/DC).

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 125 V AC and 125 V DC operation with identical performance characteristics in either application.