MPX155K305H Equivalent & Substitute Parts

Part Overview

The MPX155K305H is a 1.5 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 305V AC operation with polypropylene metallized dielectric construction. This radial through-hole component is designed for EMI and RFI suppression applications and maintains Active product status with 968 units currently in stock.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives meeting the same electrical and mechanical specifications.

Substiute Parts

MPX155K305H

Cornell Dubilier / Illinois CapacitorIn Stock: 1065MPX155K305H Datasheet

Current PartRFQ

R463R415050M1K

KEMETIn Stock: 1715R463R415050M1K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPX155K305H is determined by the following critical parameters:

Electrical Compatibility:

• Capacitance value: 1.5 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - AC: 305V minimum (equal or higher acceptable)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Temperature Range: -40°C to 110°C (equal or wider range acceptable)
• Ratings Classification: X2 (exact match required)

Mechanical Compatibility:

• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 1.083" (27.50mm) (exact match required)
• Termination: PC Pins (exact match required)

Compliance Requirements:

• RoHS3 Compliant status (exact match required)

The substitute part R463R415050M1K meets all critical electrical and mechanical parameters. The higher DC voltage rating (630V) and slightly reduced seated height do not prevent substitution, as these represent enhanced or equivalent performance characteristics within the X2 rating classification.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: MPX155K305H

The MPX155K305H remains the specified component for applications requiring exact manufacturer sourcing or where supply from Cornell Dubilier / Illinois Capacitor is contractually mandated. Active product status and current inventory of 968 units support standard procurement timelines.

Substitute Part: R463R415050M1K

The KEMET R463R415050M1K qualifies as a direct electrical and mechanical substitute based on:

• Identical capacitance (1.5 µF) and tolerance (±10%)
• Equivalent AC voltage rating (310V exceeds 305V requirement)
• Identical dielectric material, temperature range, and X2 rating classification
• Identical mechanical footprint, lead spacing, and termination
• Matching RoHS3 compliance and REACH status
• Higher DC voltage rating (630V) provides additional performance margin

The reduced seated height (22.10mm vs. 25.00mm) presents no compatibility constraint for through-hole PCB mounting and may provide layout advantages in space-constrained designs.

Selection of R463R415050M1K is appropriate when KEMET supply chain access is preferred, inventory availability of the primary part is insufficient, or design specifications permit use of components with enhanced voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can R463R415050M1K replace MPX155K305H in all applications?

A: Yes. Both components share identical capacitance, tolerance, dielectric material, temperature range, X2 rating, and mechanical footprint. The substitute part's higher AC voltage rating (310V vs. 305V) and DC voltage rating (630V) do not restrict substitution in circuits designed for the original specification.

Q: Does the difference in seated height affect PCB compatibility?

A: No. The R463R415050M1K seated height of 22.10mm is lower than the MPX155K305H at 25.00mm. This reduction does not create compatibility issues for through-hole mounting and may provide clearance benefits in designs with height constraints.

Q: Are both parts compliant with RoHS3 and REACH regulations?

A: Yes. Both MPX155K305H and R463R415050M1K carry ROHS3 Compliant status and REACH Unaffected designation, meeting current environmental and regulatory requirements.

Q: What is the significance of the X2 rating classification?

A: The X2 rating indicates both components are suitable for AC mains applications with voltage transient withstand capability. This classification is identical for both parts, confirming equivalent performance in EMI and RFI suppression circuits.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Identical lead spacing (1.083" / 27.50mm), termination type (PC Pins), and radial package configuration ensure direct PCB footprint compatibility. No layout modifications are required for substitution.

Q: What inventory considerations apply to these parts?

A: MPX155K305H has 968 units in stock. R463R415050M1K has 1696 units in stock. Selection may be influenced by required delivery timelines and supply chain availability.