5STP 10 Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The 5STP 10 is a 10 A, 250 V AC/DC slow-blow glass cartridge fuse with a 5mm x 20mm axial package manufactured by Bel Fuse Inc. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse is designed for through-hole mounting applications requiring reliable overcurrent protection in industrial and commercial equipment.

Substiute Parts

5STP 10

Bel Fuse Inc.In Stock: 11285STP 10 Datasheet

Current PartRFQ

5STP 10-R

Bel Fuse Inc.In Stock: 533855STP 10-R Datasheet

DirectRFQ

5ETP 10-R

Bel Fuse Inc.In Stock: 17905ETP 10-R Datasheet

Parametric EquivalentRFQ

0034.3127.PT

SCHURTER Inc.In Stock: 30140034.3127.PT Datasheet

DirectRFQ

BK/S506-V-10-R

Eaton - Electronics DivisionIn Stock: 1846BK/S506-V-10-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 5STP 10 is determined by strict equivalence across the following critical parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in breaking capacity, melting I²t, and dimensional tolerances are noted but do not preclude functional substitution when these parameters fall within acceptable engineering ranges for the application.

Parameter Comparison

Engineering Selection Recommendations

5STP 10-R (Bel Fuse Inc.) is the primary direct substitute. It maintains identical electrical and mechanical specifications to the 5STP 10 while offering active product status and ROHS3 compliance. This part is the recommended choice for direct replacement in existing designs.

5ETP 10-R (Bel Fuse Inc.) is a parametric equivalent from the same manufacturer. It provides higher breaking capacity (150 A vs. 100 A) and slightly lower melting I²t (400 vs. 439), with ROHS3 compliance and active status. This part is suitable for applications where enhanced breaking capacity is beneficial.

0034.3127.PT (SCHURTER Inc.) is a direct manufacturer equivalent with identical electrical ratings. Dimensional variation exists (5.40mm x 22.50mm vs. 5.50mm x 21.00mm), which may require mechanical verification for tight-tolerance mounting applications. ROHS3 compliance and active status are confirmed.

BK/S506-V-10-R (Eaton - Electronics Division) is a similar substitute with identical electrical specifications and comprehensive international certifications (BSI, CSA, cURus, IMQ, PSE/JET, SEMKO, VDE). Operating temperature range is not specified. ROHS3 compliance is confirmed. This part is suitable for applications requiring broad regulatory approvals.

Frequently Asked Questions (FAQ)

Q: Can I use 5STP 10-R as a direct replacement for 5STP 10?

A: Yes. The 5STP 10-R maintains identical current rating (10 A), voltage rating (250 V), fuse type (cartridge, glass), response time (slow blow), package (5mm x 20mm axial), and mounting type (through hole). The primary difference is product status (active vs. obsolete) and RoHS compliance.

Q: What is the difference between 5STP 10-R and 5ETP 10-R?

A: Both are 10 A, 250 V slow-blow glass cartridge fuses from Bel Fuse Inc. with identical packages. The 5ETP 10-R has higher breaking capacity (150 A vs. 10 A) and lower melting I²t (400 vs. 439). Selection depends on application-specific breaking capacity requirements.

Q: Are there dimensional differences between substitute parts?

A: Yes. The 0034.3127.PT (SCHURTER) has dimensions of 5.40mm x 22.50mm compared to the standard 5.50mm x 21.00mm. This variation may affect fit in tightly constrained mounting applications and should be verified before implementation.

Q: Which substitute part has the broadest regulatory approvals?

A: The BK/S506-V-10-R (Eaton) carries certifications from BSI, CSA, cURus, IMQ, PSE/JET, SEMKO, and VDE, providing the widest international regulatory coverage among the listed substitutes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts (5STP 10-R, 5ETP 10-R, 0034.3127.PT, and BK/S506-V-10-R) are ROHS3 compliant. The original 5STP 10 is RoHS non-compliant.

Q: Can I use these substitutes in new designs?

A: Yes. All substitute parts have active product status and are suitable for new designs. The 5STP 10-R is recommended as the primary choice due to specification equivalence and manufacturer continuity.