5ETP 10-R Equivalent & Substitute Parts

Part Overview

The 5ETP 10-R is a 10 A, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm (axial) through-hole package, manufactured by Bel Fuse Inc. The part is active in production with 1719 units currently in stock. This fuse is designed for circuit protection applications requiring slow-blow response characteristics and is compliant with CE and SEMKO approval standards. Equivalent and substitute parts may be required due to inventory availability, supply chain considerations, or specific application certifications.

Substiute Parts

5ETP 10-R

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

Current PartRFQ

5STP 10-R

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

Parametric EquivalentRFQ

BK/S506-V-10-R

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5ETP 10-R is determined by the following critical parameters:

• Current Rating: 10 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Through Hole (exact match required)
• DC Cold Resistance: 0.005 Ohms (exact match required)
• RoHS Status: ROHS3 Compliant (minimum requirement)

All identified substitute parts meet these core electrical and mechanical parameters, ensuring direct functional compatibility in applications designed for the 5ETP 10-R.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and meet the core electrical and mechanical substitution criteria. Selection should be based on the following factors:

5STP 10-R (Bel Fuse Inc.): This part is a parametric equivalent from the same manufacturer with significantly higher inventory availability (53354 units). It carries CE, CSA, and cURus certifications. The melting I²t value (439) is slightly higher than the main part (400), and the breaking capacity is lower (10 A vs. 150 A). This part is suitable for applications where the original manufacturer preference is maintained and higher stock levels are advantageous.

BK/S506-V-10-R (Eaton - Electronics Division): This part offers the broadest certification coverage, including BSI, CSA, cURus, IMQ, PSE/JET, SEMKO, and VDE approvals. The breaking capacity (100 A) and melting I²t (450) are intermediate values. Physical dimensions show minor variations (0.218" Dia x 0.831" L vs. 0.217" Dia x 0.827" L). This part is suitable for applications requiring multi-regional compliance or where Eaton supply chain integration is preferred.

Frequently Asked Questions (FAQ)

Q: Can the 5STP 10-R be used as a direct replacement for the 5ETP 10-R?

A: Yes. Both parts share identical current rating (10 A), voltage rating (250 V), response time (slow blow), package dimensions (5mm x 20mm axial), and DC cold resistance (0.005 Ohms). Both are ROHS3 compliant and active products. The primary differences are manufacturer series designation, breaking capacity, and melting I²t characteristics, which do not affect basic substitution compatibility.

Q: What are the differences in breaking capacity between these parts?

A: The 5ETP 10-R has a breaking capacity of 150 A, the BK/S506-V-10-R has 100 A, and the 5STP 10-R has 10 A. Breaking capacity indicates the maximum current the fuse can safely interrupt. Applications requiring higher breaking capacity ratings should specify the 5ETP 10-R or BK/S506-V-10-R accordingly.

Q: Are there physical dimension differences between these parts?

A: The 5ETP 10-R and 5STP 10-R are specified as 0.217" Dia x 0.827" L (5.50mm x 21.00mm). The BK/S506-V-10-R is specified as 0.218" Dia x 0.831" L (5.54mm x 21.10mm). These variations are within typical manufacturing tolerances for 5mm x 20mm cartridge fuses and do not affect mechanical compatibility in standard through-hole fuse holders.

Q: Which part has the best certification coverage?

A: The BK/S506-V-10-R carries the most comprehensive approvals: BSI, CSA, cURus, IMQ, PSE/JET, SEMKO, and VDE. The 5ETP 10-R carries CE and SEMKO. The 5STP 10-R carries CE, CSA, and cURus. Selection should align with regional compliance requirements for the target application.

Q: What is the significance of melting I²t values?

A: Melting I²t indicates the thermal energy required to melt the fuse element. The 5ETP 10-R has 400, the 5STP 10-R has 439, and the BK/S506-V-10-R has 450. These values are closely matched and reflect the slow-blow response characteristic. Differences in this range do not materially affect substitution compatibility for standard circuit protection applications.

Q: Is inventory availability a factor in part selection?

A: Yes. The 5STP 10-R has significantly higher inventory (53354 units) compared to the 5ETP 10-R (1719 units) and BK/S506-V-10-R (1811 units). For applications with extended lead time requirements or high-volume procurement, the 5STP 10-R may offer supply chain advantages.