Littelfuse 0272001.V Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0272001.V is a 1 A, 125 V AC/DC board mount fuse with fast blow response time, designed for through-hole radial mounting in electronic circuits. This component is classified as Active product status with full CSA, QPL, and UL approval certifications. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product category, ensuring direct interchangeability in circuit board applications without design modification.

Substiute Parts

0272001.V

Littelfuse Inc.In Stock: 8700272001.V Datasheet

Current PartRFQ

0278001.V

Littelfuse Inc.In Stock: 11980278001.V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0272001.V are identified based on strict electrical and mechanical parameter matching within the board mount fuse category. The substitution criteria are:

• Current Rating: 1 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: 10 kA (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Physical Dimensions: 0.235" Dia x 0.287" H (exact match required)
• DC Cold Resistance: 0.088 Ohms (exact match required)
• Melting I²t: 0.0648 (exact match required)

The Littelfuse 0278001.V meets all specified parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the 0272001.V and 0278001.V are Active status products manufactured by Littelfuse Inc. with identical electrical, mechanical, and compliance certifications. Selection between these parts may be based on inventory availability and supply chain considerations. The 0278001.V currently maintains higher inventory levels (1132 Pcs) compared to the 0272001.V (779 Pcs). Both parts carry CSA, QPL, and UL approvals, ROHS3 compliance, and REACH unaffected status, making them suitable for regulated applications. The series designation differs (MICRO™ 272 versus MICRO™ 278), but this does not affect functional interchangeability given the identical parameter specifications.

Frequently Asked Questions (FAQ)

Q: Can the 0278001.V be used as a direct replacement for the 0272001.V?

A: Yes. The 0278001.V is a parametric equivalent with identical current rating, voltage rating, response time, mounting type, package dimensions, and all electrical characteristics. Direct substitution is supported without circuit board modification.

Q: Are there any differences in approval certifications between these parts?

A: No. Both parts carry identical CSA, QPL, and UL approvals. Both are ROHS3 compliant and REACH unaffected, meeting the same regulatory requirements.

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

A: The series designation reflects internal Littelfuse product line organization. From an engineering standpoint, both series share identical electrical and mechanical specifications for this 1 A, 125 V fast blow fuse configuration, ensuring functional equivalence.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.235" Dia x 0.287" H (5.97mm x 7.30mm) and use identical radial, can, vertical package configuration, ensuring PCB footprint compatibility.

Q: Can I mix these parts in the same circuit board design?

A: Yes. Since all electrical parameters, mechanical dimensions, and certifications are identical, both parts can be used interchangeably within the same design without performance or safety implications.