MMP4W3P3K-F Equivalent & Substitute Parts

Part Overview

The MMP4W3P3K-F is a 3.3 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MMP series. This through-hole axial component operates at 400V DC with polyester metallized dielectric construction. The part is classified as Active status with 679 units currently in stock. Film capacitors of this specification are used in general-purpose applications requiring stable capacitance over extended temperature ranges and long operational life. Substitute parts are identified when original inventory becomes unavailable or when design requirements permit alternative mechanical packaging within equivalent electrical performance parameters.

Substiute Parts

MMP4W3P3K-F

Cornell Dubilier Electronics (CDE)In Stock: 787MMP4W3P3K-F Datasheet

Current PartRFQ

335MWR400K

Cornell Dubilier / Illinois CapacitorIn Stock: 1032335MWR400K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMP4W3P3K-F is determined by strict equivalence across electrical and mechanical parameters. The substitute part 335MWR400K qualifies based on the following criteria:

Electrical Equivalence:

• Capacitance value: 3.3 µF (exact match)
• Voltage rating: 400V DC / 200V AC (exact match)
• Tolerance: ±10% (exact match)
• Dielectric type: Polyester, Metallized (exact match)

Mechanical Compatibility:

• Mounting type: Through Hole (exact match)
• Package style: Axial (exact match)
• Termination: PC Pins (exact match)

Regulatory Compliance:

• RoHS3 Compliant (maintained)
• REACH Unaffected (maintained)
• ECCN: EAR99 (maintained)

Operational Differences: The substitute part operates within -40°C ~ 105°C, which is narrower than the main part's -55°C ~ 125°C range. This difference must be evaluated against specific application temperature requirements. The substitute includes specified ESR of 536 mOhms, whereas the main part does not provide this parameter.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (MMP4W3P3K-F): Use the original MMP4W3P3K-F when application requirements include operation at temperatures below -40°C or above 105°C. This part maintains Active product status with 679 units in current inventory. Full temperature range coverage of -55°C ~ 125°C is available with this selection.

Substitute Selection (335MWR400K): The 335MWR400K qualifies as an electrical and mechanical equivalent when application operating temperature remains within -40°C ~ 105°C. This part is manufactured within the Cornell Dubilier / Illinois Capacitor family and maintains identical electrical specifications. Current inventory of 933 units exceeds the main part availability. Physical dimensions differ; board layout verification is required before substitution.

Compliance Status: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification. No regulatory barriers exist for either selection.

Frequently Asked Questions (FAQ)

Q: Can 335MWR400K replace MMP4W3P3K-F in all applications?

A: Electrical and mechanical compatibility exists when application operating temperature remains within -40°C ~ 105°C. Physical dimensions differ (26.00mm x 17.00mm x 40.00mm versus 22.50mm diameter x 47.00mm length), requiring PCB layout verification. Both parts use identical axial through-hole mounting with PC pins.

Q: What is the primary difference between these parts?

A: Operating temperature range differs. MMP4W3P3K-F covers -55°C ~ 125°C; 335MWR400K covers -40°C ~ 105°C. All electrical parameters (capacitance, voltage rating, tolerance, dielectric type) are identical. Physical package dimensions vary.

Q: Are both parts RoHS compliant?

A: Yes. Both MMP4W3P3K-F and 335MWR400K are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Does the substitute part have lower ESR?

A: The 335MWR400K specifies ESR of 536 mOhms. The MMP4W3P3K-F does not provide ESR specification in available documentation. ESR performance differences must be evaluated against specific circuit requirements.

Q: Can I use these parts interchangeably on the same PCB?

A: Physical dimensions differ. The MMP4W3P3K-F measures 26.00mm W x 17.00mm T x 40.00mm L; the 335MWR400K measures 22.50mm diameter x 47.00mm L. Board layout and component spacing must be verified before substitution.

Q: What inventory status should I consider?

A: MMP4W3P3K-F has 679 units in stock. 335MWR400K has 933 units in stock. Both are classified as New Original In Stock with Active product status.