Littelfuse 0217.100MXE Glass Cartridge Fuse 100mA 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.100MXE is a 100 mA, 250 V AC/DC glass cartridge fuse with fast-blow response characteristics, designed for through-hole mounting in 5mm x 20mm form factor applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for seamless circuit protection replacement.

Substiute Parts

0217.100MXE

Littelfuse Inc.In Stock: 10910217.100MXE Datasheet

Current PartRFQ

0217.100MXEP

Littelfuse Inc.In Stock: 11530217.100MXEP Datasheet

Parametric EquivalentRFQ

0235.100HXEP

Littelfuse Inc.In Stock: 8020235.100HXEP Datasheet

Parametric EquivalentRFQ

0235.100MXEP

Littelfuse Inc.In Stock: 30640235.100MXEP Datasheet

Parametric EquivalentRFQ

0235.100VXEP

Littelfuse Inc.In Stock: 7720235.100VXEP Datasheet

Parametric EquivalentRFQ

BK/S500-V-100-R

Eaton - Electronics DivisionIn Stock: 1033BK/S500-V-100-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: current rating (100 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm axial), mounting configuration (through hole), and breaking capacity (35A). All identified substitutes maintain these core electrical and mechanical specifications.

Littelfuse 0217.100MXEP represents a direct parametric equivalent within the same 217 series, differing only in product status (active) and packaging configuration (bulk). The 235 series alternatives (0235.100MXEP, 0235.100HXEP, 0235.100VXEP) provide parametric equivalence across all critical electrical parameters while maintaining identical physical form factor and mounting characteristics. The Eaton BK/S500-V-100-R offers manufacturer-recommended cross-compatibility with equivalent electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

For applications currently utilizing the obsolete 0217.100MXE, the Littelfuse 0217.100MXEP provides direct series continuity with identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. This represents the preferred substitution path for existing designs.

The Littelfuse 235 series alternatives (0235.100MXEP, 0235.100HXEP, 0235.100VXEP) deliver equivalent circuit protection performance across all critical parameters and maintain active product availability with ROHS3 compliance. These options provide expanded inventory availability and long-term supply assurance.

The Eaton BK/S500-V-100-R cross-manufacturer alternative meets all electrical and mechanical requirements with active product status and RoHS compliance, suitable for applications where multi-source qualification is required.

Frequently Asked Questions (FAQ)

Q: Can the 0217.100MXEP directly replace the obsolete 0217.100MXE?

A: Yes. Both parts share identical current rating (100 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and breaking capacity (35A). The primary difference is product status and packaging configuration.

Q: What distinguishes the Littelfuse 235 series substitutes from the 217 series?

A: The 235 series maintains all critical electrical and mechanical parameters required for circuit protection equivalence. Differences in melting I²t and DC cold resistance do not affect functional substitution for standard circuit protection applications.

Q: Is the Eaton BK/S500-V-100-R suitable for direct replacement?

A: Yes. The Eaton part meets all specified electrical parameters (100 mA, 250 V AC, fast blow, 35A breaking capacity) and physical form factor (5mm x 20mm through-hole). Physical dimensions show minor variation (5.54mm x 21.10mm versus 6.00mm x 22.50mm), which remains within standard PCB footprint tolerances for axial through-hole mounting.

Q: Are there compliance differences between substitute options?

A: The 0217.100MXE is RoHS non-compliant. All active substitutes (0217.100MXEP, 235 series, and BK/S500-V-100-R) are RoHS compliant, meeting current regulatory requirements for new designs and production.

Q: Which substitute offers the highest inventory availability?

A: The Littelfuse 0235.100MXEP provides the largest current stock (3,028 pcs), followed by 0217.100MXEP (1,064 pcs) and 0235.100VXEP (751 pcs).