WMF2S68K Film Capacitor Equivalent & Substitute Parts

Part Overview

The WMF2S68K is a 0.068 µF polyester film capacitor rated for 250V DC operation in an axial through-hole package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, which necessitates identification of functionally equivalent substitute parts for ongoing design support and procurement continuity. The WMF series represents a legacy product line; however, direct equivalents remain available from the same manufacturer in active production status.

Substiute Parts

WMF2S68K

Cornell Dubilier Electronics (CDE)In Stock: 851WMF2S68K Datasheet

Current PartRFQ

WMF2S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 4012WMF2S68K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WMF2S68K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part WMF2S68K-F qualifies as a direct equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Capacitance value: 0.068 µF (identical)
• Voltage rating: 250V DC (identical)
• Tolerance: ±10% (identical)
• Dielectric material: Polyester (identical)
• Operating temperature range: -55°C to 125°C (identical)

Mechanical Parameter Equivalence:

• Package configuration: Axial through-hole (identical)
• Physical dimensions: 0.315" Dia × 0.811" L / 8.00mm × 20.60mm (identical)
• Termination: PC Pins (identical)

Compliance Differentiation: The primary distinction between the main part and its substitute relates to product status and regulatory compliance. The WMF2S68K-F is classified as active production status with ROHS3 compliance, whereas the WMF2S68K is obsolete and RoHS non-compliant. Both parts share identical REACH and ECCN classifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criterion: Product Status

The WMF2S68K-F is the recommended selection for new designs and procurement activities. This part maintains active production status with Cornell Dubilier Electronics, ensuring long-term availability and supply chain stability. The WMF2S68K, classified as obsolete, presents procurement risk and should be replaced in active bill-of-materials documentation.

Compliance Consideration

The WMF2S68K-F carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution in regulated markets. The WMF2S68K does not meet these compliance standards. Organizations subject to RoHS directives must transition to the WMF2S68K-F.

Functional Equivalence

Both parts are electrically and mechanically identical across all specified parameters. The WMF2S68K-F provides direct functional replacement without circuit redesign or PCB layout modification. Pin-for-pin compatibility and identical physical dimensions ensure drop-in substitution capability.

Inventory and Availability

The WMF2S68K-F maintains significantly higher inventory levels (3933 Pcs) compared to the obsolete WMF2S68K (824 Pcs), supporting reliable procurement timelines and reducing lead-time risk.

Frequently Asked Questions (FAQ)

Q: Can WMF2S68K-F be used as a direct replacement for WMF2S68K in existing designs?

A: Yes. The WMF2S68K-F is electrically and mechanically identical to the WMF2S68K across all critical parameters: capacitance (0.068 µF), voltage rating (250V DC), tolerance (±10%), dielectric material (polyester), physical dimensions (0.315" Dia × 0.811" L), and termination type (PC Pins). No circuit modifications or PCB redesign is required.

Q: What is the primary reason to transition from WMF2S68K to WMF2S68K-F?

A: The WMF2S68K is classified as obsolete, creating procurement and supply chain risk. The WMF2S68K-F is in active production status, ensuring continued availability. Additionally, the WMF2S68K-F meets ROHS3 compliance requirements, whereas the WMF2S68K does not.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical physical dimensions of 0.315" diameter by 0.811" length (8.00mm × 20.60mm). Board layout and component spacing remain unchanged during substitution.

Q: Do these parts have identical operating temperature ranges?

A: Yes. Both the WMF2S68K and WMF2S68K-F operate across the temperature range of -55°C to 125°C, providing identical thermal performance characteristics.

Q: What is the difference in packaging between these parts?

A: The WMF2S68K is supplied in standard packaging, while the WMF2S68K-F is supplied in bulk packaging. This distinction affects procurement and inventory management but does not impact component functionality or performance.

Q: Are both parts RoHS compliant?

A: No. The WMF2S68K is RoHS non-compliant. The WMF2S68K-F is ROHS3 compliant. Organizations operating under RoHS directives must use the WMF2S68K-F.

Q: Can I use WMF2S68K-F in applications requiring RoHS compliance?

A: Yes. The WMF2S68K-F carries ROHS3 compliance certification and is suitable for all applications subject to RoHS regulatory requirements.

Q: Are the electrical specifications identical?

A: Yes. Both parts are specified with 0.068 µF capacitance, ±10% tolerance, 250V DC voltage rating, polyester dielectric material, and identical operating temperature range. Electrical performance is equivalent.