Littelfuse 027201.5V Equivalent & Substitute Parts

Part Overview

The Littelfuse 027201.5V is a 1.5 A, 125 V AC/DC board mount fuse in the MICRO™ 272 series, designed for through-hole radial mounting in vertical orientation. This fast-blow fuse is actively produced and widely used in circuit protection applications requiring compact form factors with reliable performance across industrial and commercial equipment. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

027201.5V

Littelfuse Inc.In Stock: 1131027201.5V Datasheet

Current PartRFQ

027201.5H

Littelfuse Inc.In Stock: 1161027201.5H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 027201.5V are determined by strict equivalence across the following critical parameters:

• Current Rating: 1.5 A
• Voltage Rating: 125 V AC / 125 V DC
• Response Time: Fast Blow
• Mounting Type: Through Hole
• Package / Case: Radial, Can, Vertical
• Breaking Capacity: 10 kA
• Melting I²t: 0.16
• Operating Temperature Range: -55°C to 125°C
• Physical Dimensions: 0.235" Dia x 0.287" H (5.97 mm x 7.30 mm)
• DC Cold Resistance: 0.0578 Ohms
• Regulatory Compliance: CSA, QPL, UL approval

The substitute part 027201.5H meets all these criteria and belongs to the same MICRO™ 272 series, ensuring direct functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 027201.5V and 027201.5H are active products from Littelfuse Inc. with identical electrical, mechanical, and thermal specifications. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

Both parts carry CSA, QPL, and UL approvals, ensuring compliance with industry standards for circuit protection applications. Both are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial deployment.

The 027201.5H is a direct parametric equivalent suitable for applications where the 027201.5V is specified, with no design modifications or re-qualification required.

Frequently Asked Questions (FAQ)

Q: Can the 027201.5H be used as a direct replacement for the 027201.5V?

A: Yes. The 027201.5H is a parametric equivalent with identical current rating, voltage rating, response time, breaking capacity, physical dimensions, and thermal characteristics. No circuit modifications are required.

Q: Are there any differences in regulatory compliance between these parts?

A: No. Both parts carry identical CSA, QPL, and UL approvals and are ROHS3 compliant. Regulatory compliance is equivalent.

Q: Do these parts have the same physical footprint?

A: Yes. Both parts share identical dimensions of 0.235" Dia x 0.287" H (5.97 mm x 7.30 mm) and use the same radial, can, vertical package configuration for through-hole mounting.

Q: What is the melting I²t value, and why is it important?

A: The melting I²t value of 0.16 defines the thermal energy required to melt the fuse element. This parameter is identical across both parts and ensures consistent protection characteristics in circuit applications.

Q: Are both parts actively manufactured?

A: Yes. Both the 027201.5V and 027201.5H are active products with current production status, ensuring long-term availability and supply chain stability.