DME4W2P2K Film Capacitor Equivalent & Substitute Parts

Part Overview

The DME4W2P2K is a 2.2 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the DME series. This radial through-hole component is rated for 400V DC operation with polyester metallized dielectric construction. The part is currently classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system maintenance and new design implementations. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

DME4W2P2K

Cornell Dubilier Electronics (CDE)In Stock: 1092DME4W2P2K Datasheet

Current PartRFQ

DME4W2P2K-F

Cornell Dubilier Electronics (CDE)In Stock: 3659DME4W2P2K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DME4W2P2K is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance value: 2.2 µF (exact match)
• Tolerance: ±10% (exact match)
• Voltage rating - DC: 400V (minimum requirement; higher ratings acceptable)
• Voltage rating - AC: 200V (minimum requirement; higher ratings acceptable)
• Dielectric material: Polyester, Metallized (exact match)
• Operating temperature range: -55°C to 125°C (minimum requirement; wider ranges acceptable)

Mechanical Equivalence Requirements:

• Mounting type: Through Hole (exact match)
• Package type: Radial (exact match)
• Lead spacing: 1.083" (27.50mm) (exact match for PCB compatibility)
• Termination: PC Pins (exact match)

The DME4W2P2K-F meets all substitution criteria as a direct equivalent within the same manufacturer series.

Parameter Comparison

Engineering Selection Recommendations

The DME4W2P2K-F is the direct functional equivalent for the obsolete DME4W2P2K. Selection of the substitute part is based on the following engineering factors:

Product Status Consideration: The main part (DME4W2P2K) is classified as obsolete, while the substitute (DME4W2P2K-F) maintains active product status with significantly higher inventory availability (3631 Pcs vs. 983 Pcs). This ensures long-term supply chain reliability for production and field replacement applications.

Compliance and Certification: The DME4W2P2K-F achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification. For applications requiring regulatory compliance with modern environmental standards, the substitute part satisfies these requirements.

Electrical and Mechanical Compatibility: All critical electrical parameters (capacitance, tolerance, voltage ratings, dielectric material, temperature range) are identical between the main part and substitute. Mechanical compatibility is confirmed through identical lead spacing (27.50mm), mounting type (through hole radial), and termination (PC pins). The maximum seated height difference (0.866" vs. 0.925") represents a 0.059" (1.50mm) variation, which is within typical PCB design tolerances for radial component placement.

Direct Substitution Capability: The DME4W2P2K-F functions as a direct pin-compatible replacement without circuit modification or PCB redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the DME4W2P2K-F be used as a direct replacement for the DME4W2P2K in existing designs?

A: Yes. The DME4W2P2K-F is electrically and mechanically equivalent. All critical parameters including capacitance (2.2 µF), tolerance (±10%), voltage ratings (400V DC / 200V AC), dielectric material (polyester metallized), operating temperature range (-55°C to 125°C), and lead spacing (27.50mm) are identical. Direct substitution requires no circuit modifications.

Q: What is the significance of the height difference between these parts?

A: The main part has a maximum seated height of 0.866" (22.00mm), while the substitute measures 0.925" (23.50mm) maximum. This 0.059" (1.50mm) difference falls within standard PCB design clearance tolerances for radial through-hole components. Verify clearance in your specific PCB layout if space constraints exist near the component mounting location.

Q: Why is the DME4W2P2K classified as obsolete?

A: The DME4W2P2K is no longer in active production. The DME4W2P2K-F represents the current active equivalent within the same manufacturer series, offering improved compliance status and reliable supply availability.

Q: Does the RoHS3 compliance of the substitute part affect electrical performance?

A: No. RoHS3 compliance relates to material composition and environmental standards, not electrical performance. The DME4W2P2K-F maintains identical electrical specifications to the main part while meeting modern regulatory requirements.

Q: Are there any packaging differences between these parts?

A: The main part is packaged in standard format, while the substitute (DME4W2P2K-F) is supplied in bulk packaging. Both use identical component specifications and lead configurations. Packaging format does not affect electrical or mechanical compatibility.

Q: What is the lead spacing requirement for PCB design?

A: Both parts require 1.083" (27.50mm) lead spacing. This dimension is critical for PCB hole pattern compatibility and must be verified during component placement to ensure proper fit.