Equivalent & Substitute Parts for 0217004.MXEP

Part Overview

The Littelfuse 0217004.MXEP is a 4 A 250 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm axial form factor. This component is designed for circuit protection in electronic equipment requiring reliable overcurrent interruption at rated voltage. The part maintains active product status with full RoHS3 compliance and multiple international safety certifications. Equivalent substitute parts are available from alternative manufacturers to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

0217004.MXEP

Littelfuse Inc.In Stock: 8580217004.MXEP Datasheet

Current PartRFQ

0034.1522.PT

SCHURTER Inc.In Stock: 26960034.1522.PT Datasheet

DirectRFQ

5SFP 4-R

Bel Fuse Inc.In Stock: 19215SFP 4-R Datasheet

DirectRFQ

BK/S500-V-4-R

Eaton - Electronics DivisionIn Stock: 704BK/S500-V-4-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0217004.MXEP is determined by strict equivalence across the following critical parameters:

• Current Rating: 4 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 40 A (exact match required)

All substitute parts listed below meet these criteria. Variations in physical dimensions (diameter and length tolerances), DC cold resistance, melting I²t values, and approval agency certifications do not preclude substitution when the primary electrical and mechanical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active product status and comply with RoHS requirements. Selection among these equivalents should be based on:

Certification Requirements: The 0217004.MXEP (Littelfuse) carries approvals from BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, and VDE. The 0034.1522.PT (SCHURTER) holds cURus certification. The 5SFP 4-R (Bel Fuse) and BK/S500-V-4-R (Eaton) both carry CCC, CE, CSA, cULus, IMQ, SEMKO, and VDE certifications. Verify that the selected substitute meets all required regulatory approvals for your application.

Inventory Availability: Current stock levels are 811 units (Littelfuse), 2619 units (SCHURTER), 1895 units (Bel Fuse), and 683 units (Eaton).

Physical Tolerance Considerations: While all parts conform to the 5mm x 20mm package specification, minor dimensional variations exist. The 0217004.MXEP measures 5.80mm diameter x 22.50mm length; the 0034.1522.PT measures 5.40mm x 22.50mm; the 5SFP 4-R measures 5.50mm x 21.00mm; and the BK/S500-V-4-R measures 5.54mm x 21.10mm. Confirm that your PCB footprint and mechanical assembly accommodate these tolerances.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the 0217004.MXEP?

A: Yes. All listed parts meet the critical electrical and mechanical parameters: 4 A current rating, 250 V AC voltage rating, fast-blow response, cartridge glass fuse type, 5mm x 20mm axial package, through-hole mounting, and 40 A breaking capacity. Substitution is electrically and mechanically valid.

Q: What is the difference between these parts if they are all equivalent?

A: The parts are electrically equivalent but differ in DC cold resistance, melting I²t values, physical dimensions within tolerance, and certification agency approvals. These differences do not affect substitution eligibility for the specified electrical and mechanical parameters.

Q: Do I need to change my PCB design to use a substitute part?

A: No design change is required. All parts use the same 5mm x 20mm axial through-hole package. However, verify that your PCB footprint accommodates the minor dimensional variations listed in the parameter comparison table.

Q: Which certifications should I prioritize when selecting a substitute?

A: Select the part whose certification portfolio matches your application's regulatory requirements. Littelfuse 0217004.MXEP includes KC and PSE certifications not present in other options. Bel Fuse 5SFP 4-R and Eaton BK/S500-V-4-R include IMQ certification. Confirm all required approvals are present before final selection.

Q: Are there any performance differences I should consider?

A: Melting I²t values range from 22 to 29.165, and DC cold resistance ranges from 0.0165 to 0.021 Ohms. These variations are within acceptable tolerance for equivalent fast-blow 4 A fuses and do not affect circuit protection performance at rated conditions.

Q: What is the moisture sensitivity level for these parts?

A: The 0217004.MXEP and BK/S500-V-4-R are rated MSL 1 (Unlimited). The 0034.1522.PT and 5SFP 4-R are rated Not Applicable. All parts are suitable for standard storage and handling conditions.