Equivalent & Substitute Parts: WMC08P1K

Part Overview

The WMC08P1K is a 0.1 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the WMC axial series, rated for 80 VDC with ±10% tolerance. This polyester film capacitor is designed for through-hole mounting in high-pulse and DV/DT applications. The WMC08P1K has been discontinued and is no longer in active production. Finding equivalent or substitute components is necessary to maintain design continuity, ensure long-term component availability, and meet current regulatory compliance requirements for new designs or replacements in field-service applications.

Substiute Parts

WMC08P1K

Cornell Dubilier Electronics (CDE)In Stock: 989WMC08P1K Datasheet

Current PartRFQ

WMC08P1K-F

Cornell Dubilier Electronics (CDE)In Stock: 1188WMC08P1K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The WMC08P1K-F is a direct substitute for the WMC08P1K based on strict electrical and mechanical compatibility. Substitution criteria are determined by the following key parameters:

• Capacitance Value: Both parts are rated 0.1 µF
• Tolerance: Both maintain ±10% tolerance
• Voltage Rating: Both are rated 80 VDC and 50 VAC
• Dielectric Material: Both use polyester film
• Operating Temperature: Both support -55°C to 125°C
• Mounting and Package: Both are through-hole axial components with identical physical dimensions (0.343" Dia × 0.531" L)
• Termination: Both use PC Pins

The WMC08P1K-F is the modern equivalent from the same manufacturer with identical electrical and mechanical specifications, making it a seamless replacement without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

WMC08P1K-F is the appropriate selection for new designs and component replacement due to the following factors:

• Product Status: The WMC08P1K-F is in active production with confirmed inventory availability (1120 Pcs), whereas the WMC08P1K is obsolete with limited inventory (969 Pcs). Active status ensures long-term supply chain continuity.
• RoHS Compliance: The WMC08P1K-F is RoHS3 compliant, meeting current regulatory standards for new equipment and ensuring unrestricted use in end markets requiring RoHS certification. The WMC08P1K is RoHS non-compliant and unsuitable for designs requiring regulatory compliance.
• Regulatory Alignment: Both parts carry the same ECCN (EAR99) and HTSUS (8532.25.0010) classifications, and both are REACH Unaffected, ensuring equivalent trade and environmental compliance status.
• Electrical and Mechanical Equivalence: All critical performance parameters are identical, permitting direct substitution without circuit redesign or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can WMC08P1K-F be directly substituted for WMC08P1K in existing designs?

A: Yes. The WMC08P1K-F is electrically and mechanically identical to the WMC08P1K. All capacitance, voltage, dielectric, temperature, and physical dimensions are equivalent. Direct substitution is permissible without modification to PCB layouts, schematics, or circuit operation.

Q: What is the primary difference between WMC08P1K and WMC08P1K-F?

A: The WMC08P1K-F is the current-production equivalent with RoHS3 compliance and active manufacturer support. The WMC08P1K is obsolete. Both parts share identical electrical and mechanical specifications for the 0.1 µF, 80 VDC axial film capacitor.

Q: Are the physical dimensions and package identical?

A: Yes. Both parts are axial through-hole components with identical dimensions: 0.343" diameter × 0.531" length (8.70mm × 13.50mm). PCB footprints and component clearance requirements are identical.

Q: Does the RoHS3 compliance of WMC08P1K-F affect performance?

A: No. RoHS3 compliance is a regulatory designation indicating restriction of hazardous substances. Performance specifications including capacitance, voltage rating, temperature range, and dielectric material remain unchanged. Compliance does not affect functional operation.

Q: What applications are these capacitors rated for?

A: Both WMC08P1K and WMC08P1K-F are rated for high-pulse and DV/DT (rate of voltage change) applications, indicating suitability for switching power supplies, pulse circuits, and transient-heavy environments.

Q: Are tolerance specifications identical?

A: Yes. Both parts carry ±10% tolerance on the 0.1 µF capacitance value, ensuring equivalent circuit performance and margin calculations.