WMF1D68K Equivalent & Substitute Parts

Part Overview

The WMF1D68K is a 6800 pF polyester film capacitor rated for 100V DC operation with ±10% tolerance in an axial through-hole package. This component is classified as obsolete, necessitating identification of equivalent substitute parts to maintain design continuity and ensure procurement availability for legacy systems and repairs.

Substiute Parts

WMF1D68K

Cornell Dubilier Electronics (CDE)In Stock: 761WMF1D68K Datasheet

Current PartRFQ

WMF1D68K-F

Cornell Dubilier Electronics (CDE)In Stock: 909WMF1D68K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WMF1D68K is determined by strict equivalence of the following parameters:

• Capacitance Value: 6800 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 100V DC (minimum acceptable)
• Dielectric Material: Polyester (ensures electrical performance characteristics)
• Package Configuration: Axial through-hole (ensures mechanical compatibility with printed circuit board layout)
• Operating Temperature Range: -55°C to 125°C (minimum required range)
• Physical Dimensions: 0.201" Dia × 0.563" L (required for assembly and clearance)

The WMF1D68K-F qualifies as a direct equivalent substitute based on matching all critical electrical and mechanical parameters while providing improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The WMF1D68K-F is the qualified substitute for the obsolete WMF1D68K. Primary advantages include:

• Product Status: The substitute part maintains active status, ensuring consistent availability for procurement and future replacements.
• RoHS Compliance: The WMF1D68K-F achieves ROHS3 compliance, supporting adherence to current environmental and regulatory standards in electronics manufacturing.
• Electrical Equivalence: Complete parameter matching guarantees direct functional replacement without circuit performance modification.
• Physical Compatibility: Identical dimensions and termination configuration enable direct printed circuit board substitution without layout revision.

Selection of the WMF1D68K-F eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with designs originally specified for the WMF1D68K.

Frequently Asked Questions (FAQ)

Q: Can the WMF1D68K-F be used as a direct replacement for the WMF1D68K in existing designs? A: Yes. The WMF1D68K-F matches all critical electrical parameters (capacitance, tolerance, voltage rating, dielectric material, operating temperature) and physical dimensions (0.201" Dia × 0.563" L axial package). Direct printed circuit board substitution requires no design modification.

Q: What is the impact of the RoHS compliance difference between the original and substitute parts? A: The original WMF1D68K is RoHS non-compliant, while the substitute WMF1D68K-F achieves ROHS3 compliance. This distinction affects manufacturing facility requirements and environmental regulatory adherence. The substitute part aligns with current environmental standards in electronics manufacturing.

Q: Are there any limitations in using the WMF1D68K-F in applications originally designed for the WMF1D68K? A: No limitations exist. Identical operating temperature range (-55°C to 125°C), voltage rating (100V DC), capacitance value (6800 pF), and package configuration ensure full functional equivalence across all application environments.

Q: How should the axial package orientation be verified during assembly substitution? A: Axial through-hole components are polarity-agnostic in standard capacitor applications. The physical dimensions (0.201" Dia × 0.563" L) and PC pin termination match existing board footprints and assembly processes without modification.

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