MMWA05W1K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMWA05W1K is a 1 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 50V DC voltage rating and ±10% tolerance. This component features polyester metallized dielectric construction in an axial through-hole package. The part is currently classified as obsolete, making identification of suitable substitutes necessary for ongoing production and maintenance applications. Equivalent and substitute parts maintain the same electrical performance characteristics while offering improved availability and compliance status.

Substiute Parts

MMWA05W1K

Cornell Dubilier Electronics (CDE)In Stock: 1014MMWA05W1K Datasheet

Current PartRFQ

MMWA05W1K-F

Cornell Dubilier Electronics (CDE)In Stock: 1250MMWA05W1K-F Datasheet

DirectRFQ

150105K63EC

Cornell Dubilier Electronics (CDE)In Stock: 1051150105K63EC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMWA05W1K are classified into two categories based on substitution criteria:

Direct Equivalent (Same Series): MMWA05W1K-F maintains identical electrical specifications and physical dimensions as the main part. This substitute differs only in packaging format (bulk versus standard) and product status (active versus obsolete). The direct equivalent satisfies all electrical and mechanical requirements without design modification.

Similar Substitute (Higher Voltage Rating): 150105K63EC provides equivalent capacitance and tolerance with enhanced voltage ratings (63V DC / 40V AC versus 50V DC / 35V AC). This part operates within the same temperature range and uses identical dielectric material. Physical dimensions differ slightly (0.315" Dia x 0.807" L versus 0.335" Dia x 1.000" L), requiring verification of PCB layout compatibility. The higher voltage rating provides additional design margin in applications where the original 50V specification is not a limiting constraint.

Substitution logic is based strictly on the following allowed parameters: capacitance value, voltage ratings, tolerance, dielectric type, operating temperature range, mounting configuration, and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

MMWA05W1K-F is the primary substitute for obsolete MMWA05W1K applications. This part provides identical electrical and mechanical specifications with active product status and ROHS3 compliance. Selection of MMWA05W1K-F eliminates obsolescence risk while maintaining design compatibility without PCB modification.

150105K63EC serves as an alternative substitute where design specifications permit higher voltage ratings. The 63V DC rating provides additional operational margin compared to the original 50V specification. Physical dimension differences (smaller diameter and length) require PCB layout verification before implementation. This part is suitable for applications where voltage derating is acceptable and space constraints are not limiting factors.

Both substitute parts maintain REACH compliance and identical dielectric material composition. Selection between direct equivalent and similar substitute depends on product lifecycle requirements, compliance mandates, and physical layout constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can MMWA05W1K-F be used as a direct replacement for MMWA05W1K without PCB modification?

A: Yes. MMWA05W1K-F maintains identical capacitance (1 µF), voltage ratings (50V DC / 35V AC), tolerance (±10%), dielectric material (polyester metallized), operating temperature range (-55°C to 125°C), and physical dimensions (0.335" Dia x 1.000" L). No design changes are required.

Q: What are the key differences between MMWA05W1K-F and 150105K63EC?

A: Both parts share identical capacitance, tolerance, dielectric material, and operating temperature range. MMWA05W1K-F matches the original voltage ratings (50V DC / 35V AC), while 150105K63EC provides higher ratings (63V DC / 40V AC). Physical dimensions differ: MMWA05W1K-F is 0.335" Dia x 1.000" L; 150105K63EC is 0.315" Dia x 0.807" L. The smaller size of 150105K63EC may affect PCB layout compatibility.

Q: Is 150105K63EC suitable for applications originally designed for MMWA05W1K?

A: 150105K63EC meets all electrical requirements (1 µF capacitance, ±10% tolerance, polyester metallized dielectric, -55°C to 125°C operating range). The higher voltage rating (63V DC versus 50V DC) is compatible with designs specifying 50V minimum. Physical dimension differences require verification that the smaller package (0.315" Dia x 0.807" L) fits the PCB layout without interference.

Q: What is the significance of RoHS compliance for these substitutes?

A: MMWA05W1K is RoHS non-compliant, while both MMWA05W1K-F and 150105K63EC are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, MMWA05W1K-F or 150105K63EC must be selected. Both substitutes meet current environmental compliance standards.

Q: Are all three parts manufactured by the same company?

A: Yes. MMWA05W1K, MMWA05W1K-F, and 150105K63EC are all manufactured by Cornell Dubilier Electronics (CDE). This ensures consistent quality standards and material specifications across all options.

Q: What packaging formats are available for these parts?

A: MMWA05W1K is available in standard packaging. MMWA05W1K-F and 150105K63EC are supplied in bulk packaging. Packaging format does not affect electrical or mechanical performance.