WMC2D1K Equivalent & Substitute Parts

Part Overview

The WMC2D1K is a 1000 pF film capacitor rated for 250V DC, manufactured by Cornell Dubilier Electronics (CDE) with polyester dielectric and axial mounting configuration. This part carries an obsolete product status, making identification of functional equivalents necessary for ongoing design support and board repairs. The WMC2D1K-F serves as the direct functional equivalent, offering identical electrical and mechanical specifications with active product status and improved compliance.

Substiute Parts

WMC2D1K

Cornell Dubilier Electronics (CDE)In Stock: 1128WMC2D1K Datasheet

Current PartRFQ

WMC2D1K-F

Cornell Dubilier Electronics (CDE)In Stock: 1206WMC2D1K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the WMC2D1K is determined by the following critical parameters: capacitance value (1000 pF), tolerance (±10%), DC voltage rating (250V), AC voltage rating (125V), dielectric material (polyester), operating temperature range (-55°C to 125°C), mounting configuration (through hole axial), and physical dimensions (0.185" Dia × 0.406" L). The WMC2D1K-F maintains identical specifications across all these parameters and is therefore a direct functional equivalent. Both parts are manufactured by Cornell Dubilier Electronics within the WMC series.

Parameter Comparison

Engineering Selection Recommendations

The WMC2D1K-F is the appropriate selection for new designs and board repairs. While the original WMC2D1K is functionally equivalent in all electrical and mechanical parameters, the WMC2D1K-F offers superior availability through active product status and compliance with ROHS3 standards. The original part's obsolete status and non-compliant RoHS rating make the WMC2D1K-F the preferred choice for applications requiring current component sourcing and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can WMC2D1K-F replace WMC2D1K directly on existing PCBs? A: Yes. Both parts share identical physical dimensions, electrical ratings, and termination configuration, enabling direct pin-compatible substitution on through-hole PCB layouts.

Q: Are there any electrical performance differences between these parts? A: No. Both parts maintain identical capacitance (1000 pF), tolerance (±10%), voltage ratings (250V DC, 125V AC), dielectric material (polyester), and operating temperature range (-55°C to 125°C).

Q: Why should WMC2D1K-F be preferred over WMC2D1K? A: The WMC2D1K-F carries active product status, ensuring continued availability and supply chain reliability. Additionally, ROHS3 compliance of the WMC2D1K-F meets current regulatory requirements, whereas the original WMC2D1K is RoHS non-compliant.

Q: What applications are these parts suitable for? A: Both parts are rated for high pulse and DV/DT applications, with operating parameters suitable for circuits requiring stable capacitance performance across the -55°C to 125°C temperature range.

Q: Are packaging differences relevant to substitution? A: The WMC2D1K utilizes bulk packaging while WMC2D1K-F is supplied in bulk. Both maintain identical component dimensions and through-hole axial configuration, eliminating packaging as a substitution constraint.