Equivalent & Substitute Parts for 5HTP 3.15 Ceramic Fuse

Part Overview

The 5HTP 3.15 is a 3.15 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc. in a 5mm x 20mm axial package with slow-blow response characteristics. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support and procurement planning. Direct manufacturer alternatives and parametric equivalents are available from active product lines.

Substiute Parts

5HTP 3.15

Bel Fuse Inc.In Stock: 9945HTP 3.15 Datasheet

Current PartRFQ

5HTP 3.15-R

Bel Fuse Inc.In Stock: 28945HTP 3.15-R Datasheet

DirectRFQ

0001.2509.PT

SCHURTER Inc.In Stock: 34630001.2509.PT Datasheet

DirectRFQ

TCD-P-3.15A

OptiFuseIn Stock: 4998TCD-P-3.15A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5HTP 3.15 is determined by strict alignment with the following electrical and mechanical parameters:

• Current Rating: 3.15 A (exact match required)
• Voltage Rating (AC): 250 V (minimum requirement)
• Fuse Type: Cartridge, Ceramic
• Package / Case: 5mm x 20mm (Axial)
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 1.5 kA
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 125°C

All substitute parts listed below meet these core parameters and are therefore electrically and mechanically compatible with the original 5HTP 3.15 specification.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are electrically and mechanically compatible with the 5HTP 3.15 based on core parameter alignment. Selection should be based on product status and compliance requirements:

5HTP 3.15-R (Bel Fuse Inc.) is the direct manufacturer alternative from Bel Fuse Inc., maintaining the same series designation and approval certifications as the original part. This part is active and ROHS3 compliant, making it the preferred choice for direct replacement where Bel Fuse continuity is required.

0001.2509.PT (SCHURTER Inc.) provides an alternative from a different manufacturer with active product status and ROHS3 compliance. This part offers extended DC voltage rating (300 V DC) beyond the AC specification, providing additional design margin in mixed-voltage applications.

TCD-P-3.15A (OptiFuse) is a parametric equivalent from OptiFuse with active product status, ROHS3 compliance, and IEC 60127 certification. This part is suitable for applications where manufacturer diversity is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 5HTP 3.15-R be used as a direct replacement for the obsolete 5HTP 3.15?

A: Yes. The 5HTP 3.15-R meets all electrical and mechanical parameters of the original part, including current rating, voltage rating, package dimensions, response time, and operating temperature range. Both parts share identical approval certifications.

Q: What is the difference between the 5HTP 3.15 and 5HTP 3.15-R?

A: The primary differences are product status (obsolete vs. active) and RoHS compliance (non-compliant vs. ROHS3 compliant). The 5HTP 3.15-R is the active production equivalent from the same manufacturer.

Q: Can SCHURTER 0001.2509.PT be used in place of the Bel Fuse part?

A: Yes. The 0001.2509.PT meets all core electrical and mechanical substitution parameters. The extended DC voltage rating (300 V) provides additional capability beyond the AC specification and does not create incompatibility.

Q: Are there any dimensional differences between these fuses?

A: Minor dimensional variations exist within the 5mm x 20mm package specification. The 5HTP 3.15 and 5HTP 3.15-R are 0.217" diameter x 0.827" length. The SCHURTER 0001.2509.PT is 0.213" diameter x 0.886" length. These variations remain within standard 5x20mm cartridge fuse tolerances and do not affect mechanical fit in standard fuse holders.

Q: Which substitute part should be selected for new designs?

A: For new designs, any of the three active substitute parts are acceptable based on core parameter compatibility. Selection should consider manufacturer preference, supply chain availability, and compliance requirements specific to the application.

Q: Do all substitute parts have the same approval certifications?

A: No. The 5HTP 3.15-R maintains the full certification set of the original part (CCC, CE, CSA, cULus, IMQ, SEMKO, VDE). The SCHURTER and OptiFuse parts carry cURus certification, with OptiFuse additionally certified to IEC 60127. Verify certification requirements for your specific application.