Littelfuse 0272003.V Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0272003.V is a 3 A, 125 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in electronic assemblies. This component is classified as Active product status with full compliance to RoHS3, REACH, and international approval agencies including CSA, QPL, and UL. Substitute parts are identified when identical electrical and mechanical parameters are required for component procurement, inventory management, or supply chain continuity.

Substiute Parts

0272003.V

Littelfuse Inc.In Stock: 6950272003.V Datasheet

Current PartRFQ

0272003.H

Littelfuse Inc.In Stock: 10100272003.H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0272003.H is identified as a parametric equivalent to the 0272003.V based on strict alignment of all critical electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

• Current Rating: 3 A (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)
• Melting I²t: 0.759 (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• Size / Dimension: 0.235" Dia x 0.287" H (5.97mm x 7.30mm) (identical)
• DC Cold Resistance: 0.0275 Ohms (identical)
• Approval Agencies: CSA, QPL, UL (identical)
• RoHS Status: ROHS3 Compliant (identical)

Both parts belong to the MICRO™ 272 series and maintain identical functional and physical specifications, making them direct substitutes within the same product family.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0272003.V and 0272003.H maintain Active product status with identical compliance certifications (CSA, QPL, UL) and RoHS3 compliance. Selection between these parts is based on inventory availability and supply chain requirements rather than functional or electrical differences. The 0272003.H currently maintains higher inventory levels (902 Pcs) compared to the 0272003.V (654 Pcs), making it suitable for high-volume procurement scenarios. Both parts satisfy identical circuit protection requirements for 3 A, 125 V AC/DC applications with fast blow response characteristics and are suitable for direct substitution in board mount through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the 0272003.H be used as a direct replacement for the 0272003.V?

A: Yes. Both parts are identical in all electrical and mechanical parameters, including current rating, voltage rating, response time, package dimensions, and approval certifications. Direct substitution is permissible without circuit redesign or re-qualification.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching: current rating (3 A), voltage ratings (125 V AC/DC), response time (Fast Blow), mounting type (Through Hole), package configuration (Radial, Can, Vertical), breaking capacity (10 kA), melting I²t (0.759), operating temperature range (-55°C ~ 125°C), and physical dimensions (0.235" Dia x 0.287" H).

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical approval certifications (CSA, QPL, UL) and maintain ROHS3 compliance with REACH Unaffected status.

Q: What is the difference between the 0272003.V and 0272003.H designations?

A: The designations represent different packaging or distribution variants within the MICRO™ 272 series. All electrical and mechanical specifications remain identical.

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, making them suitable for dual-voltage applications.

Q: What is the physical footprint compatibility?

A: Both parts share identical dimensions (0.235" Dia x 0.287" H / 5.97mm x 7.30mm) and radial, can, vertical package configuration, ensuring PCB layout compatibility without modification.