5HFP 2.5 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 5HFP 2.5 is a 2.5 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm axial through-hole package with fast-blow response characteristics. This part is currently obsolete, making identification of active equivalent and substitute components essential for ongoing system support and new design implementations. Substitute parts must maintain electrical performance within the specified current, voltage, and breaking capacity parameters while accommodating mechanical and mounting requirements.

Substiute Parts

5HFP 2.5

Bel Fuse Inc.In Stock: 8015HFP 2.5 Datasheet

Current PartRFQ

5HF 3.15-R

Bel Fuse Inc.In Stock: 43985HF 3.15-R Datasheet

DirectRFQ

5HFP 2.5-R

Bel Fuse Inc.In Stock: 18235HFP 2.5-R Datasheet

DirectRFQ

0001.1008.PT

SCHURTER Inc.In Stock: 37760001.1008.PT Datasheet

DirectRFQ

021602.5MXEP

Littelfuse Inc.In Stock: 1749021602.5MXEP Datasheet

DirectRFQ

021602.5MXESPP

Littelfuse Inc.In Stock: 1646021602.5MXESPP Datasheet

DirectRFQ

BK/GDA-V-2.5A

Eaton - Electronics DivisionIn Stock: 1026BK/GDA-V-2.5A Datasheet

SimilarRFQ

FCD-P-2.5A

OptiFuseIn Stock: 3407FCD-P-2.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HFP 2.5 is determined by strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating (AC): 250 V (minimum)
• Fuse Type: Cartridge, Ceramic
• Package / Case: 5mm x 20mm (Axial)
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 1.5 kA (minimum)
• Mounting Type: Through Hole

Direct Equivalents maintain all primary criteria and are functionally interchangeable without circuit modification.

Similar Parts meet electrical specifications but may have minor variations in physical dimensions, resistance, or melting I²t characteristics that require verification in specific applications.

Parametric Equivalents satisfy core electrical requirements but may differ in secondary characteristics such as melting I²t or approval agencies.

Parameter Comparison

Engineering Selection Recommendations

First Priority - Direct Equivalent (Active Status, RoHS3 Compliant):

• 5HFP 2.5-R (Bel Fuse Inc.) — Maintains original manufacturer lineage with active product status and RoHS3 compliance. Identical electrical and mechanical specifications. Recommended for direct replacement in existing designs.

Secondary Priority - Cross-Manufacturer Equivalents (Active Status, RoHS3 Compliant):

• 021602.5MXEP (Littelfuse Inc.) — Meets all electrical and mechanical criteria with comprehensive approval agency coverage (CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE). Active product with RoHS3 compliance.
• 021602.5MXESPP (Littelfuse Inc.) — Functionally equivalent with active status and RoHS3 compliance. Approval agencies include CE, CSA, CQC, KC, PSE, UR, VDE.
• 0001.1008.PT (SCHURTER Inc.) — Meets core electrical specifications with active status and RoHS3 compliance. Approval limited to cURus and IEC 60127.

Alternative Options (Active Status, Compliance Considerations):

• BK/GDA-V-2.5A (Eaton - Electronics Division) — Electrically equivalent but RoHS non-compliant. Suitable for legacy systems where RoHS compliance is not required.
• FCD-P-2.5A (OptiFuse) — Parametric equivalent with RoHS compliance. Approval agencies limited to cURus and IEC 60127. Suitable for new designs prioritizing RoHS compliance.

Not Recommended:

• 5HF 3.15-R (Bel Fuse Inc.) — Current rating of 3.15 A exceeds the 2.5 A specification. Mounting type requires holder rather than through-hole. Not electrically equivalent.

Frequently Asked Questions (FAQ)

Q: Can I use 5HFP 2.5-R as a direct replacement for the obsolete 5HFP 2.5?

A: Yes. The 5HFP 2.5-R is the active equivalent from the original manufacturer. It maintains identical electrical ratings (2.5 A, 250 V AC), mechanical package (5mm x 20mm axial through-hole), and response characteristics (fast-blow). The primary difference is RoHS3 compliance status. No circuit modifications are required.

Q: What is the difference between 021602.5MXEP and 021602.5MXESPP?

A: Both are Littelfuse 2.5 A, 250 V AC ceramic cartridge fuses in 5mm x 20mm axial packages. The primary difference is approval agency coverage. 021602.5MXEP includes UL and SEMKO certifications, while 021602.5MXESPP includes CQC and UR certifications. Selection depends on regional compliance requirements.

Q: Are there any physical dimension differences between substitute parts?

A: Minor variations exist. The 5HFP 2.5 measures 0.217" Dia x 0.827" L (5.50mm x 21.00mm). Littelfuse parts measure 0.228" Dia x 0.886" L (5.80mm x 22.50mm). SCHURTER 0001.1008.PT measures 0.213" Dia x 0.886" L (5.40mm x 22.50mm). These variations remain within standard 5mm x 20mm cartridge fuse tolerances and do not affect holder compatibility.

Q: Why is 5HF 3.15-R listed in the original substitute list but not recommended?

A: The 5HF 3.15-R has a current rating of 3.15 A, which exceeds the 2.5 A specification of the original part. Additionally, it requires a separate fuse holder rather than direct through-hole mounting. It is not electrically or mechanically equivalent and would provide inadequate circuit protection.

Q: Which substitute part has the best approval agency coverage?

A: The 021602.5MXEP (Littelfuse) provides the most comprehensive approval coverage: CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE. This makes it suitable for applications requiring multi-regional compliance.

Q: Is RoHS compliance required for my application?

A: RoHS compliance depends on your application and market region. For new designs or systems destined for European markets, RoHS3-compliant options (5HFP 2.5-R, 021602.5MXEP, 021602.5MXESPP, 0001.1008.PT) are recommended. For legacy systems or non-regulated applications, RoHS non-compliant options (BK/GDA-V-2.5A) remain functionally equivalent.

Q: Can I use FCD-P-2.5A in place of the original 5HFP 2.5?

A: Yes, with approval agency considerations. The FCD-P-2.5A meets all electrical and mechanical specifications and includes RoHS compliance. However, its approval agencies (cURus, IEC 60127) are more limited than other options. Verify that these certifications satisfy your system requirements before implementation.