MMWA05W3K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMWA05W3K-F is a 3 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MMWA series. This axial-mounted, through-hole component utilizes polyester metallized dielectric technology and is rated for 50V DC operation across an operating temperature range of -55°C to 125°C. The part maintains Active product status with 1094 units currently in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compliance with applicable standards and certifications.

Substiute Parts

MMWA05W3K-F

Cornell Dubilier Electronics (CDE)In Stock: 1110MMWA05W3K-F Datasheet

Current PartRFQ

335MWR050K

Cornell Dubilier / Illinois CapacitorIn Stock: 2159335MWR050K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMWA05W3K-F is determined by the following criteria:

Electrical Compatibility:

• Capacitance value must fall within the ±10% tolerance band of 3 µF (2.7 µF to 3.3 µF)
• DC voltage rating must equal or exceed 50V
• Dielectric material must be polyester metallized construction

Physical Compatibility:

• Mounting type must be through-hole
• Package configuration must be axial
• Termination must be PC pins

Regulatory & Compliance:

• RoHS3 compliance required
• REACH Unaffected status maintained
• ECCN classification EAR99

The substitute part 335MWR050K meets these criteria with a capacitance of 3.3 µF (within the ±10% tolerance band), 50V DC rating, polyester metallized dielectric, axial through-hole mounting, and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (MMWA05W3K-F): The MMWA05W3K-F is the specified component and should be used when design requirements explicitly call for this part number. It provides the widest operating temperature range (-55°C to 125°C) and higher AC voltage rating (35V). Active product status with 1094 units in stock ensures availability.

Substitute Part Selection (335MWR050K): The 335MWR050K serves as an electrical and mechanical equivalent when the MMWA05W3K-F is unavailable. The substitute meets all mandatory electrical parameters: capacitance within tolerance (3.3 µF vs. 3 µF nominal), identical 50V DC rating, and matching polyester metallized dielectric. Both parts maintain ROHS3 compliance and REACH Unaffected status.

Operational Considerations: The substitute part operates within a narrower temperature range (-40°C to 105°C) compared to the main part. Applications requiring operation below -40°C or above 105°C must use the MMWA05W3K-F. The substitute's more compact physical dimensions (10.00mm x 20.50mm versus 12.10mm x 31.70mm) may provide layout advantages in space-constrained designs while maintaining identical axial through-hole mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 335MWR050K directly replace the MMWA05W3K-F in all applications?

A: The 335MWR050K is electrically compatible for applications operating within -40°C to 105°C. Applications requiring the full -55°C to 125°C temperature range of the MMWA05W3K-F must use the primary part. Both parts share identical DC voltage rating (50V), capacitance tolerance (±10%), dielectric type (polyester metallized), and mounting configuration (axial through-hole).

Q: What is the capacitance tolerance relationship between these parts?

A: Both parts carry ±10% tolerance. The MMWA05W3K-F is rated at 3 µF nominal (2.7 µF to 3.3 µF range), while the 335MWR050K is rated at 3.3 µF nominal (2.97 µF to 3.63 µF range). The 3.3 µF substitute falls within the acceptable tolerance band of the 3 µF primary part specification.

Q: Are there physical installation differences between these parts?

A: Both parts use axial through-hole mounting with PC pin termination. The 335MWR050K is more compact (10.00mm x 20.50mm) compared to the MMWA05W3K-F (12.10mm x 31.70mm). This dimensional difference may affect PCB layout but does not impact electrical compatibility or mounting method.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the MMWA05W3K-F and 335MWR050K are ROHS3 compliant and REACH Unaffected, meeting current regulatory standards for electronic component manufacturing and distribution.

Q: What is the AC voltage rating difference, and does it matter for substitution?

A: The MMWA05W3K-F carries a 35V AC rating while the 335MWR050K is rated 35V AC. Both share the same 50V DC rating. For DC-only applications, this difference is not relevant. For AC applications, verify that the application voltage does not exceed the rated AC specification of either part.