MMP4W1K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMP4W1K is a 1 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating, polyester metallized dielectric, and axial through-hole mounting. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The MMP4W1K-F serves as the direct functional equivalent with improved product status and compliance characteristics.

Substiute Parts

MMP4W1K

Cornell Dubilier Electronics (CDE)In Stock: 1077MMP4W1K Datasheet

Current PartRFQ

MMP4W1K-F

Cornell Dubilier Electronics (CDE)In Stock: 2510MMP4W1K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMP4W1K is determined by equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 1 µF
• Tolerance specification: ±10%
• Voltage rating (DC): 400V minimum
• Voltage rating (AC): 200V minimum
• Dielectric composition: Polyester, Metallized

Mechanical Parameters:

• Mounting configuration: Through Hole
• Package type: Axial
• Physical dimensions: 0.728" W, 0.413" T x 1.378" L
• Termination style: PC Pins

Environmental Parameters:

• Operating temperature range: -55°C ~ 125°C
• Moisture sensitivity level: 1 (Unlimited)

The MMP4W1K-F maintains identical electrical and mechanical specifications while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The MMP4W1K-F is the direct substitute for the obsolete MMP4W1K. Both components share identical electrical specifications, mechanical dimensions, and thermal operating ranges, ensuring functional interchangeability in circuit applications.

Product Status Consideration: The MMP4W1K is classified as obsolete, while the MMP4W1K-F maintains active product status. For new designs and ongoing procurement, the MMP4W1K-F is the appropriate selection.

Regulatory Compliance: The MMP4W1K-F achieves ROHS3 compliance, whereas the MMP4W1K is RoHS non-compliant. Both components maintain REACH Unaffected status and share identical ECCN and HTSUS classifications. For applications subject to RoHS requirements, the MMP4W1K-F satisfies regulatory mandates.

Packaging and Availability: The MMP4W1K-F is supplied in bulk packaging with significantly higher inventory availability (2460 Pcs) compared to the main part (994 Pcs), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the MMP4W1K-F replace the MMP4W1K in existing designs?

A: Yes. The MMP4W1K-F is electrically and mechanically identical to the MMP4W1K. Both components feature 1 µF capacitance, ±10% tolerance, 400V DC rating, polyester metallized dielectric, and identical axial through-hole package dimensions. Direct substitution is supported without circuit modification.

Q: What is the primary difference between these two parts?

A: The MMP4W1K-F offers improved product status (active versus obsolete) and achieves ROHS3 compliance, whereas the MMP4W1K is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both the MMP4W1K and MMP4W1K-F share identical dimensions of 0.728" W, 0.413" T x 1.378" L (18.50mm, 10.50mm x 35.00mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: What packaging options are available?

A: The MMP4W1K is available in standard packaging, while the MMP4W1K-F is supplied in bulk packaging. Both maintain identical component specifications.

Q: Are there any temperature or environmental limitations?

A: Both components operate across the identical temperature range of -55°C to 125°C and maintain Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related restrictions during storage or handling.

Q: Which part should be specified for new designs?

A: The MMP4W1K-F should be specified for new designs due to its active product status and ROHS3 compliance. The MMP4W1K is obsolete and should not be selected for new applications.