DMM2W4P7K

Part Overview

The DMM2W4P7K is a 4.7 µF film capacitor rated for 250V DC operation, manufactured by Cornell Dubilier Electronics (CDE). This part is classified as obsolete, necessitating the identification of suitable alternative components for new designs and replacement applications. The equivalent substitute maintains identical electrical and mechanical specifications while offering improved compliance and availability through an active product status variant.

Substiute Parts

DMM2W4P7K

Cornell Dubilier Electronics (CDE)In Stock: 887DMM2W4P7K Datasheet

Current PartRFQ

DMM2W4P7K-F

Cornell Dubilier Electronics (CDE)In Stock: 748DMM2W4P7K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DMM2W4P7K is established based on electrical and mechanical parameter compatibility. The direct equivalent DMM2W4P7K-F maintains all critical specifications: capacitance of 4.7 µF, ±10% tolerance, 250V DC rating, 160V AC rating, polyester metallized dielectric, operating temperature range of -55°C to +125°C, through-hole radial package configuration, and identical lead spacing of 1.083" (27.50mm) and physical dimensions of 1.220" x 0.630" x 1.024" maximum height.

The substitution is permissible where the following parameters are met:

• Capacitance: 4.7 µF
• Tolerance: ±10%
• Voltage Rating - DC: 250V minimum
• Voltage Rating - AC: 160V minimum
• Dielectric: Polyester, Metallized
• Package: Radial, Through Hole
• Lead Spacing: 1.083" (27.50mm)

Parameter Comparison

Engineering Selection Recommendations

The DMM2W4P7K-F is the direct equivalent substitute for the obsolete DMM2W4P7K. Both components are manufactured by Cornell Dubilier Electronics within the same DMM series and share identical electrical and mechanical specifications. The primary distinction is product status: the original DMM2W4P7K is obsolete, while DMM2W4P7K-F carries active production status with improved regulatory compliance.

The DMM2W4P7K-F achieves ROHS3 compliance, addressing environmental and regulatory requirements applicable to current manufacturing standards. Both components maintain equivalent REACH unaffected status and EAR99 export classification. The moisture sensitivity level (MSL) improvement in the substitute reflects current storage and handling protocols without affecting functional performance in typical through-hole PCB assembly applications.

For applications requiring the 4.7 µF, 250V DC film capacitor in radial through-hole configuration, the DMM2W4P7K-F provides complete functional and mechanical compatibility with superior availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can DMM2W4P7K-F be used as a direct replacement for DMM2W4P7K? A: Yes. The DMM2W4P7K-F maintains identical capacitance (4.7 µF), voltage ratings (250V DC / 160V AC), dielectric material (polyester, metallized), operating temperature range (-55°C to +125°C), and physical package specifications including lead spacing (1.083" / 27.50mm) and dimensions (1.220" x 0.630" x 1.024" max height).

Q: What is the primary reason for substitution? A: The original DMM2W4P7K is classified as obsolete. The DMM2W4P7K-F provides the same electrical and mechanical functionality with active product status, ensuring ongoing availability and manufacturing support.

Q: Are there PCB layout considerations for this substitution? A: No layout changes are required. Both parts use identical radial through-hole configuration with 1.083" (27.50mm) lead spacing and matching physical dimensions, allowing direct PCB footprint compatibility.

Q: Does the substitute offer improved compliance? A: The DMM2W4P7K-F achieves ROHS3 compliance, compared to the non-compliant status of the original DMM2W4P7K. Both maintain REACH unaffected status. Compliance requirements should be evaluated against specific application and regional regulatory requirements.

Q: What is the inventory availability difference? A: Current inventory shows 778 pieces of the original DMM2W4P7K and 690 pieces of the DMM2W4P7K-F substitute. Long-term availability is assured only with the active product status variant.

Q: Are voltage derating considerations identical? A: Both components operate identically across the full voltage range, with 250V DC and 160V AC ratings and identical -55°C to +125°C operating temperature range. No derating adjustments are required for substitution.