Littelfuse 0218.063MXGP Glass Cartridge Fuse 63mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0218.063MXGP is a slow-blow glass cartridge fuse rated at 63 mA, 250 V AC/DC with a 5mm x 20mm form factor. This fuse is designed for circuit protection in applications requiring delayed response to transient overcurrent conditions. The part is active in production with full international compliance certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and approval agency certifications to ensure direct functional interchangeability in circuit protection applications.

Substiute Parts

0218.063MXGP

Littelfuse Inc.In Stock: 9160218.063MXGP Datasheet

Current PartRFQ

0218.063HXP

Littelfuse Inc.In Stock: 10580218.063HXP Datasheet

Parametric EquivalentRFQ

0218.063MXP

Littelfuse Inc.In Stock: 19930218.063MXP Datasheet

Parametric EquivalentRFQ

5ST 63-R

Bel Fuse Inc.In Stock: 566535ST 63-R Datasheet

MFR RecommendedRFQ

BK/S506-63-R

Eaton - Electronics DivisionIn Stock: 839BK/S506-63-R Datasheet

MFR RecommendedRFQ

BK1/S506-63-R

Eaton - Electronics DivisionIn Stock: 1668BK1/S506-63-R Datasheet

MFR RecommendedRFQ

GDC-63MA

Eaton - Electronics DivisionIn Stock: 1179GDC-63MA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0218.063MXGP is determined by the following critical parameters:

• Current Rating: 63 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Package Dimensions: 5mm x 20mm (exact match required)
• Breaking Capacity: 35A (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in secondary parameters such as melting I²t, DC cold resistance, and specific approval agency certifications do not affect functional interchangeability within the specified electrical operating envelope.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status and meet the core electrical and mechanical specifications of the 0218.063MXGP. Selection among equivalents should be based on the following factors:

Littelfuse 0218.063HXP and 0218.063MXP: These parts are manufactured by the same supplier as the primary part and carry identical approval agency certifications including UL, CSA, CE, and VDE. Both are suitable for direct replacement in applications requiring full compliance with North American and European standards.

Bel Fuse 5ST 63-R: This part carries CSA, CE, VDE, and IMQ certifications. It provides an alternative from a different manufacturer while maintaining equivalent electrical performance and mechanical fit.

Eaton BK/S506-63-R and BK1/S506-63-R: Both Eaton parts carry BSI, CCC, CSA, IMQ, SEMKO, UR, and VDE certifications. These parts are functionally equivalent and suitable for applications requiring broad international compliance.

Eaton GDC-63MA: This part carries cURus and IMQ certifications. Selection of this part should be confirmed against specific application compliance requirements, as it carries a narrower certification scope compared to other substitutes.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 0218.063MXGP with any of the listed equivalent parts?

A: Yes. All listed parts meet the required electrical ratings (63 mA, 250 V AC), response time (slow blow), mechanical dimensions (5mm x 20mm), and breaking capacity (35A). They are functionally interchangeable for circuit protection applications.

Q: What is the difference between the Littelfuse 0218.063MXGP and 0218.063HXP?

A: Both parts are identical in electrical ratings and mechanical dimensions. The primary difference is in melting I²t (0.028 vs. 0.0117) and DC cold resistance (14.268 vs. 17.65 Ohms). These variations do not affect functional interchangeability within the specified operating envelope.

Q: Are there approval agency differences I should consider?

A: The 0218.063MXGP carries KC certification, while the 0218.063HXP and 0218.063MXP carry K-MARK certification. The Eaton GDC-63MA carries only cURus and IMQ certifications. Verify that the selected part meets the specific compliance requirements of your application and target market.

Q: Do all substitute parts fit the same holder?

A: Yes. All parts share the identical 5mm x 20mm form factor and require the same cartridge fuse holder. Mechanical fit is guaranteed across all listed substitutes.

Q: What is the significance of melting I²t values?

A: Melting I²t indicates the thermal energy required to melt the fuse element. While values vary among substitutes (ranging from 0.008 to 0.028), all parts are rated for the same 63 mA current and 250 V voltage, ensuring equivalent protection performance within the specified electrical operating range.

Q: Can I use the GDC-63MA if my application requires UL certification?

A: No. The GDC-63MA carries only cURus and IMQ certifications and does not include UL approval. If UL certification is required, select from the 0218.063MXGP, 0218.063HXP, 0218.063MXP, or 5ST 63-R.