Equivalent & Substitute Parts for 5HTP 2.5

Part Overview

The 5HTP 2.5 is a ceramic cartridge fuse manufactured by Bel Fuse Inc., rated for 2.5 A at 250 V AC with slow-blow response characteristics. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and new design implementations. Substitute parts must maintain identical electrical performance and mechanical compatibility within the 5mm x 20mm form factor.

Substiute Parts

5HTP 2.5

Bel Fuse Inc.In Stock: 9035HTP 2.5 Datasheet

Current PartRFQ

5HTP 2.5-R

Bel Fuse Inc.In Stock: 22825HTP 2.5-R Datasheet

DirectRFQ

0001.2508.PT

SCHURTER Inc.In Stock: 39740001.2508.PT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HTP 2.5 is determined by strict equivalence across the following parameters:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating (AC): 250 V (minimum requirement)
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 5mm x 20mm (Axial)
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 125°C (minimum coverage required)

Two active substitute parts meet these criteria. The 5HTP 2.5-R maintains identical specifications with improved RoHS3 compliance status. The 0001.2508.PT from SCHURTER Inc. provides equivalent performance with extended DC voltage rating (300 V DC) and alternative certification profile.

Parameter Comparison

Engineering Selection Recommendations

The 5HTP 2.5-R is the direct functional equivalent, manufactured by the same supplier with identical electrical and mechanical specifications. This part is currently active in production and carries ROHS3 compliance, addressing regulatory requirements that may apply to new designs or system upgrades.

The 0001.2508.PT from SCHURTER Inc. provides equivalent performance for AC applications and offers extended DC voltage capability (300 V DC). This part is suitable for applications requiring dual AC/DC voltage ratings. The melting I²t value of 11.7 differs from the main part specification of 17, indicating faster thermal response characteristics. Certification profile differs, with cURus approval replacing the broader agency list of the main part.

Selection between substitute parts depends on regulatory compliance requirements, certification scope needed for the application, and whether DC voltage rating extension is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the 5HTP 2.5-R directly replace the obsolete 5HTP 2.5?

A: Yes. The 5HTP 2.5-R maintains identical current rating (2.5 A), voltage rating (250 V AC), response time (Slow Blow), package dimensions (5mm x 20mm), and operating temperature range (-55°C ~ 125°C). Both parts share the same DC cold resistance (0.05 Ohms) and melting I²t value (17). The primary difference is product status and RoHS compliance.

Q: What is the difference between the 5HTP 2.5-R and 0001.2508.PT?

A: Both are active substitutes with identical current and AC voltage ratings. The 0001.2508.PT includes a 300 V DC rating, whereas the 5HTP 2.5-R does not specify DC voltage capability. The melting I²t differs (11.7 vs. 17), indicating different thermal response profiles. Certification agencies also differ, with the SCHURTER part carrying cURus approval instead of the broader agency list.

Q: Are there mechanical compatibility concerns between these parts?

A: All three parts use the 5mm x 20mm (Axial) package with through-hole mounting. Physical dimensions are nearly identical, with the 0001.2508.PT measuring 5.40mm diameter x 22.50mm length compared to the main part at 5.50mm diameter x 21.00mm length. These minor variations remain within typical PCB footprint tolerances for axial cartridge fuses.

Q: Which substitute should be selected for new designs?

A: The 5HTP 2.5-R is recommended for direct replacement scenarios where RoHS3 compliance is required and the original certification profile is acceptable. The 0001.2508.PT is suitable when DC voltage rating extension or cURus certification specifically satisfies application requirements.

Q: What certifications apply to each substitute part?

A: The 5HTP 2.5-R carries CCC, CE, CSA, IMQ, PSE, SEMKO, UL, and VDE approvals. The 0001.2508.PT carries cURus certification. Application requirements determine which certification scope is necessary.