MPX475K305N Equivalent & Substitute Parts

Part Overview

The MPX475K305N is a 4.7 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, designed for EMI and RFI suppression applications. This polypropylene metallized radial capacitor operates at 305V AC with a ±10% tolerance and is rated for -40°C to 110°C operating temperature range. The part is currently Active in product status with 893 pieces in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component flexibility within specified electrical and mechanical parameters.

Substiute Parts

MPX475K305N

Cornell Dubilier / Illinois CapacitorIn Stock: 924MPX475K305N Datasheet

Current PartRFQ

R463W447050M1K

KEMETIn Stock: 1655R463W447050M1K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MPX475K305N are identified based on strict equivalence of the following critical parameters:

Electrical Parameters:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)
• Voltage rating: AC 305V minimum (equal or higher voltage rating acceptable)
• Operating temperature range: -40°C ~ 110°C (equal or wider range acceptable)
• Safety rating: X2 (exact match required)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead spacing: 1.476" (37.50mm) (exact match required)
• Termination: PC Pins (exact match required)

Compliance Parameters:

• RoHS3 Compliant status (exact match required)
• REACH Unaffected status (exact match required)

The substitute part R463W447050M1K meets all critical electrical, mechanical, and compliance requirements for direct substitution in the MPX475K305N application.

Parameter Comparison

Engineering Selection Recommendations

The R463W447050M1K from KEMET is a direct substitute for the MPX475K305N based on the following engineering criteria:

Electrical Equivalence: Both parts share identical capacitance (4.7 µF), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 110°C), and safety rating (X2). The substitute part is rated at 310V AC, which exceeds the main part's 305V AC requirement, providing additional voltage margin in the application.

Mechanical Compatibility: Lead spacing, termination type (PC Pins), mounting configuration (Through Hole radial), and package dimensions are functionally equivalent. Minor dimensional variations (length 41.50mm vs. 42.50mm, height 32.10mm vs. 32.50mm) remain within acceptable tolerances for PCB layout and mechanical assembly.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications, ensuring no regulatory barriers to substitution.

Product Status: Both parts are Active in product status with adequate inventory availability (1546 pieces for the substitute vs. 893 pieces for the main part).

Frequently Asked Questions (FAQ)

Q: Can R463W447050M1K be used as a direct replacement for MPX475K305N in existing designs?

A: Yes. The R463W447050M1K meets all critical electrical and mechanical parameters required for direct substitution. Lead spacing, PCB pin configuration, and physical dimensions are compatible with existing layouts designed for the MPX475K305N.

Q: What is the significance of the higher voltage rating on the substitute part?

A: The R463W447050M1K is rated at 310V AC and 630V DC, compared to the MPX475K305N's 305V AC rating. Higher voltage ratings provide additional safety margin and do not negatively impact circuit performance. The substitute part remains suitable for applications designed for 305V AC operation.

Q: Are there any temperature operating differences between these parts?

A: No. Both parts operate across the identical temperature range of -40°C to 110°C, ensuring thermal performance equivalence in the application.

Q: Do the dimensional differences between these parts affect PCB assembly?

A: The dimensional variations (approximately 1mm in length and 0.4mm in height) are minor and functionally equivalent for standard PCB layouts. Both parts use identical lead spacing (37.50mm) and PC pin termination, ensuring compatibility with existing footprints.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the MPX475K305N and R463W447050M1K are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the packaging difference between these parts?

A: The main part (MPX475K305N) is supplied in standard packaging, while the substitute (R463W447050M1K) is supplied in Tray packaging. Both packaging formats are suitable for automated assembly processes.