Equivalent & Substitute Parts for 0217.315MRET1P

Part Overview

The Littelfuse 0217.315MRET1P is a 315 mA, 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor, packaged in Tape & Reel configuration. This component is classified as Active product status and is designed for through-hole mounting applications. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct functional replacement in circuit protection applications.

Substiute Parts

0217.315MRET1P

Littelfuse Inc.In Stock: 7710217.315MRET1P Datasheet

Current PartRFQ

S500-315-R

Eaton - Electronics DivisionIn Stock: 903S500-315-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0217.315MRET1P is determined by the following critical parameters:

Electrical Equivalence: Current rating of 315 mA and voltage rating of 250 V AC must be maintained. Response time classification (Fast Blow) must match to ensure identical circuit protection behavior.

Mechanical Compatibility: Package dimensions of 5mm x 20mm are mandatory. Fuse type (Cartridge, Glass) must remain consistent.

Performance Specifications: Breaking capacity at rated voltage of 35A establishes the maximum fault current the fuse can safely interrupt.

Regulatory Compliance: RoHS3 compliance and approval certifications (CCC, CE, CSA, UL, VDE) confirm suitability for equivalent applications.

The substitute part S500-315-R meets all electrical and mechanical criteria, with the distinction that it requires a separate holder for mounting, whereas the original part is configured for through-hole mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the 0217.315MRET1P and S500-315-R are Active products with ROHS3 compliance and equivalent electrical specifications. Selection between these parts depends on mounting architecture:

The 0217.315MRET1P is suitable for applications requiring direct through-hole mounting without additional holder components. The S500-315-R is appropriate for designs utilizing separate fuse holder assemblies. Both parts carry equivalent approval certifications (CCC, CE, CSA, VDE) and are rated for identical voltage and current parameters, confirming functional interchangeability within their respective mounting configurations.

Frequently Asked Questions (FAQ)

Q: Can the S500-315-R directly replace the 0217.315MRET1P in an existing PCB design?

A: Direct PCB replacement is not possible without design modification. The 0217.315MRET1P is a through-hole component, while the S500-315-R requires a separate holder assembly. PCB footprint and mounting structure must be evaluated before substitution.

Q: Are the electrical protection characteristics identical between these two fuses?

A: Yes. Both parts share identical current rating (315 mA), voltage rating (250 V AC), response time (Fast Blow), and breaking capacity (35A). Electrical protection behavior is equivalent.

Q: What is the significance of the different DC Cold Resistance values?

A: The 0217.315MRET1P has 0.88 Ohms DC cold resistance, while the S500-315-R has 3.1 Ohms. This parameter reflects internal element design differences but does not affect substitution eligibility, as both parts meet the same electrical performance requirements at rated conditions.

Q: Are both parts suitable for the same temperature operating range?

A: The 0217.315MRET1P specifies -55°C ~ 125°C operating temperature. The S500-315-R does not provide an operating temperature specification in the available data. Temperature range compatibility should be verified against application requirements before substitution.

Q: What packaging differences exist between these parts?

A: The 0217.315MRET1P is supplied in Tape & Reel (TR) packaging, while the S500-315-R is supplied in Bulk packaging. This affects procurement and handling but does not impact electrical or mechanical compatibility.