WMC08D68K Film Capacitor Equivalent & Substitute Parts

Part Overview

The WMC08D68K is a 6800 pF polyester film capacitor manufactured by Cornell Dubilier Electronics (CDE) with an 80V DC voltage rating and ±10% tolerance. This component is designed for through-hole axial mounting in applications requiring high pulse and DV/DT performance characteristics.

The WMC08D68K carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

WMC08D68K

Cornell Dubilier Electronics (CDE)In Stock: 946WMC08D68K Datasheet

Current PartRFQ

WMC08D68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1162WMC08D68K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WMC08D68K is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 6800 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - DC: 80V (minimum requirement; higher ratings acceptable)
• Voltage Rating - AC: 50V (minimum requirement; higher ratings acceptable)
• Dielectric Material: Polyester (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Physical Dimensions: 0.185" Dia x 0.406" L / 4.70mm x 10.30mm (exact match required)
• Termination: PC Pins (exact match required)

Substitute parts must satisfy all parameters listed above to ensure functional and mechanical compatibility within the original circuit design.

Parameter Comparison

Engineering Selection Recommendations

The WMC08D68K-F is a direct functional equivalent to the obsolete WMC08D68K. Both components are manufactured by Cornell Dubilier Electronics and share identical electrical and mechanical specifications across all critical parameters.

Selection Basis:

The WMC08D68K-F is recommended as the primary substitute due to:

1. Product Status: The WMC08D68K-F maintains active product status, ensuring ongoing availability and supply chain support, whereas the WMC08D68K is obsolete.

2. Regulatory Compliance: The WMC08D68K-F is ROHS3 compliant, meeting current environmental and regulatory requirements. The original WMC08D68K is RoHS non-compliant.

3. Electrical Equivalence: All electrical parameters—capacitance, tolerance, voltage ratings, dielectric material, and operating temperature range—are identical between the two parts.

4. Mechanical Compatibility: Physical dimensions, mounting type, package configuration, and termination style are identical, ensuring direct board-level compatibility without design modification.

5. Packaging Availability: The WMC08D68K-F is available in bulk packaging, supporting production requirements at scale.

The WMC08D68K-F provides a seamless transition path for applications currently using the obsolete WMC08D68K, with the added benefit of improved regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the WMC08D68K-F be used as a direct replacement for the WMC08D68K without circuit modification?

A: Yes. The WMC08D68K-F is electrically and mechanically identical to the WMC08D68K. All critical parameters—capacitance, voltage ratings, tolerance, dielectric material, operating temperature range, physical dimensions, and termination style—match exactly. No circuit design changes are required.

Q: What is the difference between WMC08D68K and WMC08D68K-F?

A: The primary differences are product status and regulatory compliance. The WMC08D68K is obsolete and RoHS non-compliant. The WMC08D68K-F is an active product with ROHS3 compliance. Electrically and mechanically, both parts are identical.

Q: Are there any compatibility concerns when substituting the WMC08D68K-F for the WMC08D68K?

A: No compatibility concerns exist. Both components feature identical axial through-hole mounting, PC pin termination, and physical dimensions (0.185" Dia x 0.406" L). The WMC08D68K-F will fit existing PCB layouts without modification.

Q: Why is the WMC08D68K marked as obsolete?

A: The WMC08D68K has been discontinued by Cornell Dubilier Electronics. The WMC08D68K-F represents the current active equivalent in the WMC series, offering the same electrical and mechanical performance with improved regulatory compliance.

Q: Does the WMC08D68K-F meet current environmental regulations?

A: Yes. The WMC08D68K-F is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the lead spacing for these axial capacitors?

A: Lead spacing information is not specified in the component documentation. Physical dimensions are provided as 0.185" Dia x 0.406" L (4.70mm x 10.30mm), which define the component envelope for PCB layout purposes.

Q: Can the WMC08D68K-F be used in high-pulse and DV/DT applications?

A: Yes. The WMC08D68K-F is rated for high-pulse and DV/DT applications, matching the performance characteristics of the original WMC08D68K.