MMWA4P22K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMWA4P22K is a 0.22 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating and polyester metallized dielectric construction. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and design continuity. The MMWA series axial film capacitor is designed for general-purpose applications requiring reliable capacitance in through-hole configurations.

Substiute Parts

MMWA4P22K

Cornell Dubilier Electronics (CDE)In Stock: 710MMWA4P22K Datasheet

Current PartRFQ

MMWA4P22K-F

Cornell Dubilier Electronics (CDE)In Stock: 1130MMWA4P22K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MMWA4P22K is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 0.22 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - DC: 400V (minimum requirement; higher ratings acceptable)
• Voltage Rating - AC: 200V (minimum requirement; higher ratings acceptable)
• Dielectric Material: Polyester, Metallized (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Physical Dimensions: 0.335" Dia x 1.000" L / 8.50mm x 25.40mm (exact match required)
• Termination: PC Pins (exact match required)

Substitute parts must satisfy all parameters listed above to ensure functional and mechanical compatibility with the original design.

Parameter Comparison

Engineering Selection Recommendations

MMWA4P22K-F is the primary active equivalent for the obsolete MMWA4P22K. This part maintains identical electrical and mechanical specifications across all critical parameters: 0.22 µF capacitance, ±10% tolerance, 400V DC / 200V AC voltage ratings, polyester metallized dielectric, -55°C ~ 125°C operating temperature range, through-hole axial mounting, and 8.50mm x 25.40mm physical dimensions.

The MMWA4P22K-F differs from the original part in product status (active versus obsolete) and regulatory compliance. The MMWA4P22K-F is ROHS3 compliant, whereas the original MMWA4P22K is RoHS non-compliant. Both parts maintain REACH Unaffected status. The MMWA4P22K-F is the recommended selection for new designs and ongoing procurement due to its active product status and improved regulatory compliance posture.

The part number 150224J400FE is listed as an additional substitute; however, complete electrical and mechanical parameter data for this part number is not provided in the available documentation and cannot be evaluated for substitution compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MMWA4P22K-F be used as a direct replacement for the obsolete MMWA4P22K?

A: Yes. The MMWA4P22K-F is a direct functional and mechanical equivalent. All critical parameters—capacitance, tolerance, voltage ratings, dielectric material, operating temperature range, mounting type, package configuration, and physical dimensions—are identical between the two parts.

Q: What is the primary difference between MMWA4P22K and MMWA4P22K-F?

A: The MMWA4P22K-F is the active production variant of the obsolete MMWA4P22K. The MMWA4P22K-F is ROHS3 compliant, while the original MMWA4P22K is RoHS non-compliant. Both parts are REACH Unaffected.

Q: Are there any physical dimension differences between these parts?

A: No. Both the MMWA4P22K and MMWA4P22K-F share identical physical dimensions of 0.335" diameter by 1.000" length (8.50mm x 25.40mm). They are fully compatible with existing through-hole PCB layouts designed for axial film capacitors.

Q: What voltage ratings must a substitute part maintain?

A: A substitute part must maintain a minimum of 400V DC and 200V AC voltage rating. Parts with higher voltage ratings are acceptable for substitution provided all other parameters remain equivalent.

Q: Is the ±10% tolerance specification critical for substitution?

A: Yes. The tolerance specification is a critical parameter. Substitute parts must maintain ±10% tolerance to ensure circuit performance and design compliance.

Q: What is the operating temperature range requirement?

A: Substitute parts must operate across the full range of -55°C to 125°C. This specification is not negotiable for functional equivalence.

Q: Can parts with different dielectric materials substitute for the MMWA4P22K?

A: No. The MMWA4P22K uses polyester metallized dielectric construction. Substitute parts must use identical dielectric material to maintain electrical characteristics and reliability.

Q: What mounting and termination specifications must be maintained?

A: Substitute parts must be through-hole mounted with axial package configuration and PC pin termination. These specifications ensure mechanical compatibility with existing PCB designs.