WMF1D5K Equivalent & Substitute Parts

Part Overview

The WMF1D5K is a 5000 pF film capacitor rated for 100V DC operation with polyester dielectric material in axial through-hole configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The WMF series represents Cornell Dubilier Electronics' general-purpose film capacitor line designed for applications requiring stable capacitance and reliable performance across extended temperature ranges.

Substiute Parts

WMF1D5K

Cornell Dubilier Electronics (CDE)In Stock: 1223WMF1D5K Datasheet

Current PartRFQ

WMF1D5K-F

Cornell Dubilier Electronics (CDE)In Stock: 2708WMF1D5K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WMF1D5K is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 5000 pF (exact match required)
• Tolerance: ±10% (defines acceptable capacitance variation)
• Voltage Rating (DC): 100V (minimum voltage specification for safe operation)
• Dielectric Material: Polyester (determines electrical characteristics and temperature stability)
• Mounting Configuration: Through Hole Axial (ensures mechanical and electrical compatibility with PCB layouts)
• Physical Dimensions: 0.189" Dia × 0.563" L (4.80mm × 14.30mm) (guarantees fit in existing board designs)
• Termination Type: PC Pins (ensures compatibility with standard through-hole soldering processes)

The WMF1D5K-F qualifies as a direct substitute based on identical electrical specifications and mechanical form factor. The primary distinction is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

WMF1D5K-F is the direct functional equivalent for the obsolete WMF1D5K. Selection of WMF1D5K-F is supported by the following factors:

1. Product Status: WMF1D5K-F maintains active product status with Cornell Dubilier Electronics, ensuring continued availability and manufacturing support.

2. Electrical Equivalence: All critical electrical parameters—capacitance, tolerance, voltage rating, and dielectric material—are identical between the two parts.

3. Mechanical Compatibility: Physical dimensions and through-hole axial configuration are identical, enabling direct substitution in existing PCB designs without layout modifications.

4. Compliance Enhancement: WMF1D5K-F achieves ROHS3 compliance, whereas the original WMF1D5K is RoHS non-compliant. This upgrade supports modern regulatory requirements and supply chain standards.

5. Certification Alignment: Both parts maintain identical REACH Unaffected and EAR99 ECCN classifications, preserving export and regulatory compliance profiles.

For applications where RoHS compliance is not a requirement, either part satisfies the functional specification. For new designs or procurement requiring regulatory compliance, WMF1D5K-F is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can WMF1D5K-F be used as a direct replacement for WMF1D5K in existing designs?

A: Yes. WMF1D5K-F is electrically and mechanically identical to WMF1D5K. All critical parameters—capacitance, voltage rating, tolerance, dielectric material, and physical dimensions—match exactly. No circuit modifications or PCB layout changes are required.

Q: What is the primary difference between WMF1D5K and WMF1D5K-F?

A: The primary differences are product status and RoHS compliance. WMF1D5K is obsolete and RoHS non-compliant, while WMF1D5K-F is active and ROHS3 compliant. Packaging configuration also differs (standard versus bulk).

Q: Are there any electrical performance differences between these parts?

A: No. Both parts operate identically across all specified electrical parameters: 5000 pF capacitance, ±10% tolerance, 100V DC rating, polyester dielectric, and -55°C to 125°C operating temperature range.

Q: Does the bulk packaging of WMF1D5K-F affect component performance?

A: No. Packaging configuration (standard versus bulk) affects procurement and logistics only. It does not alter electrical or mechanical performance of the component itself.

Q: Is WMF1D5K-F suitable for applications requiring RoHS compliance?

A: Yes. WMF1D5K-F is ROHS3 compliant and meets modern regulatory requirements for RoHS-restricted substances. The original WMF1D5K is not RoHS compliant.

Q: Can these axial film capacitors be used in high-frequency applications?

A: Polyester film capacitors in the WMF series are classified for general-purpose applications. Frequency-dependent performance characteristics are not specified in the provided parameters and should be evaluated against specific application requirements.

Q: What is the moisture sensitivity level for these components?

A: Both WMF1D5K and WMF1D5K-F are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.