Equivalent & Substitute Parts for 5HFP 3.15-R Ceramic Fuse

Part Overview

The 5HFP 3.15-R is a ceramic cartridge fuse manufactured by Bel Fuse Inc., rated for 3.15 A at 250 V AC/DC with fast-blow response characteristics. This through-hole component is designed for 5mm x 20mm axial mounting applications and is currently in active production status. Alternative equivalent parts are available from Littelfuse Inc. to support supply chain flexibility and component availability across different procurement channels.

Substiute Parts

5HFP 3.15-R

Bel Fuse Inc.In Stock: 16495HFP 3.15-R Datasheet

Current PartRFQ

02163.15MXESPP

Littelfuse Inc.In Stock: 141602163.15MXESPP Datasheet

DirectRFQ

02163.15MXEP

Littelfuse Inc.In Stock: 313402163.15MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HFP 3.15-R is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 3.15 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Two substitute parts from Littelfuse Inc. meet these criteria:

Direct Equivalent: 02163.15MXESPP (216SP Series) — Identical electrical specifications with minor dimensional variation within acceptable tolerance.

Similar Equivalent: 02163.15MXEP (216 Series) — Identical electrical specifications with dimensional variation in diameter and length.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and ROHS3 compliance. Selection between the main part and substitutes should be based on:

Approval Agency Coverage: The 5HFP 3.15-R includes cULus and IMQ certifications not present in the Littelfuse alternatives. The 02163.15MXEP includes CCC and SEMKO certifications. Verify that the selected part carries all required regulatory approvals for your specific application jurisdiction.

Dimensional Fit: The 02163.15MXESPP offers the closest dimensional match to the 5HFP 3.15-R, with minimal variation in diameter and length. The 02163.15MXEP exhibits greater dimensional variation and may require mechanical clearance verification in space-constrained applications.

Melting I²t Characteristic: The 5HFP 3.15-R has a melting I²t of 12, while both Littelfuse alternatives specify 6.7. This difference indicates faster thermal response in the Littelfuse parts. Confirm that this characteristic is acceptable for your circuit protection requirements.

DC Cold Resistance: The 5HFP 3.15-R specifies 0.031 Ohms compared to 0.0368 Ohms for both Littelfuse parts. This minor difference may be relevant in low-voltage, high-current applications where resistive heating is a design consideration.

Frequently Asked Questions (FAQ)

Q: Can 02163.15MXESPP and 02163.15MXEP be used interchangeably with 5HFP 3.15-R?

A: Both Littelfuse parts meet the core electrical specifications (3.15 A, 250 V AC, fast-blow, 1.5 kA breaking capacity). However, dimensional differences and variations in melting I²t and DC cold resistance require verification against your specific circuit design and mechanical constraints.

Q: What is the significance of the melting I²t difference between 5HFP 3.15-R (12) and the Littelfuse alternatives (6.7)?

A: Melting I²t defines the thermal energy required to melt the fuse element. A lower I²t value indicates faster thermal response. The Littelfuse parts will respond more quickly to overcurrent conditions. Confirm this characteristic aligns with your circuit protection strategy.

Q: Are there regulatory approval differences between these parts?

A: Yes. The 5HFP 3.15-R carries cULus and IMQ approvals not listed for 02163.15MXESPP. The 02163.15MXEP includes CCC and SEMKO certifications. Verify that your application requirements are met by the selected part's approval agency list.

Q: Do dimensional variations affect PCB layout compatibility?

A: The 02163.15MXESPP has minimal dimensional variation (5.20mm x 20.00mm vs. 5.50mm x 21.00mm). The 02163.15MXEP shows greater variation (5.80mm x 22.50mm). For through-hole mounting, verify that your PCB footprint and mechanical clearances accommodate the selected part's dimensions.

Q: What is the difference between "Direct Equivalent" and "Similar Equivalent" classifications?

A: The 02163.15MXESPP (Direct Equivalent) offers closer dimensional alignment to the 5HFP 3.15-R. The 02163.15MXEP (Similar Equivalent) meets all electrical specifications but with greater dimensional variation. Both are functionally equivalent for circuit protection purposes.