Littelfuse 0216.063MXP Ceramic Fuse 63mA 250VAC 5x20mm - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0216.063MXP is a ceramic cartridge fuse rated for 63 mA at 250 V AC/DC with fast-blow response characteristics. This component is designed for applications requiring overcurrent protection in a compact 5mm x 20mm form factor. The part is active in production and widely stocked, making it suitable for both new designs and field replacements. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and approval certifications to ensure direct interchangeability in protected circuits.

Substiute Parts

0216.063MXP

Littelfuse Inc.In Stock: 24730216.063MXP Datasheet

Current PartRFQ

0216.063HXP

Littelfuse Inc.In Stock: 7580216.063HXP Datasheet

DirectRFQ

BK/S501-63-R

Eaton - Electronics DivisionIn Stock: 1970BK/S501-63-R Datasheet

MFR RecommendedRFQ

S501-63-R

Eaton - Electronics DivisionIn Stock: 1132S501-63-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0216.063MXP is determined by the following mandatory parameters:

• Current Rating: 63 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)

All identified substitute parts meet these criteria. Variations in secondary parameters such as DC cold resistance, melting I²t values, and approval agency certifications do not affect functional interchangeability when the primary electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed are active production components with ROHS3 compliance and identical electrical and mechanical specifications. Selection between Littelfuse (0216.063MXP, 0216.063HXP) and Eaton (BK/S501-63-R, S501-63-R) variants should be based on:

• Approval agency requirements: Littelfuse parts carry CCC, CE, CSA, SEMKO, UR, and VDE certifications. Eaton parts carry CCC, CSA, and cULus certifications.
• Supply chain availability: Littelfuse 0216.063MXP has 2374 units in stock; 0216.063HXP has 744 units. Eaton BK/S501-63-R has 1884 units; S501-63-R has 1104 units.
• Existing design qualification: If the circuit design is already qualified with one manufacturer's part, continued use of that manufacturer's equivalent is preferred to maintain design consistency.

Frequently Asked Questions (FAQ)

Q: Can 0216.063HXP be used as a direct replacement for 0216.063MXP?

A: Yes. Both parts are manufactured by Littelfuse, share identical electrical ratings (63 mA, 250 V AC), fuse type (ceramic cartridge), response time (fast blow), and mechanical dimensions (5mm x 20mm). They are functionally interchangeable.

Q: Are Eaton S501 series fuses compatible with Littelfuse 216 series holders?

A: Yes. Both BK/S501-63-R and S501-63-R match the 5mm x 20mm mechanical specification and all electrical parameters. They will fit standard 5mm x 20mm fuse holders designed for ceramic cartridge fuses.

Q: What is the difference between BK/S501-63-R and S501-63-R?

A: Both parts are electrically and mechanically identical. The primary difference is in moisture sensitivity level designation: BK/S501-63-R is rated MSL 1 (Unlimited), while S501-63-R lists MSL as Not Applicable. This distinction does not affect functional performance in standard applications.

Q: Which approval certifications should I prioritize for my application?

A: Refer to your circuit design requirements and regional standards. Littelfuse parts include VDE and SEMKO certifications in addition to CCC, CE, CSA, and UR. Eaton parts include cULus certification. Select the part whose certification portfolio aligns with your application's compliance requirements.

Q: Can I mix different manufacturers' fuses in the same circuit?

A: All four parts meet identical electrical and mechanical specifications and are approved for the same voltage and current ratings. However, maintaining consistency with a single manufacturer's part throughout a design is a standard engineering practice to ensure uniform performance characteristics and simplify supply chain management.