WMF4P22K Equivalent & Substitute Parts

Part Overview

The WMF4P22K is a 0.22 µF film capacitor rated for 400V DC operation with polyester dielectric material, designed for general purpose through-hole applications. This part is classified as obsolete. The WMF4P22K-F serves as a direct substitute, offering identical electrical and mechanical specifications while maintaining active product status and improved compliance standards.

Substiute Parts

WMF4P22K

Cornell Dubilier Electronics (CDE)In Stock: 995WMF4P22K Datasheet

Current PartRFQ

WMF4P22K-F

Cornell Dubilier Electronics (CDE)In Stock: 836WMF4P22K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The WMF4P22K and WMF4P22K-F are direct substitutes based on identical electrical and mechanical parameters: 0.22 µF capacitance, 400V DC voltage rating, ±10% tolerance, polyester dielectric, axial through-hole configuration, and matching physical dimensions (0.594" Dia x 1.374" L). Both parts maintain the same operating temperature range (-55°C to 125°C) and general purpose application suitability. Substitution is valid where the main part's obsolete status necessitates component replacement.

Parameter Comparison

Engineering Selection Recommendations

Select WMF4P22K-F for new designs and component replacement applications. This part maintains complete electrical and mechanical compatibility with the obsolete WMF4P22K while offering active product status and ROHS3 compliance. The WMF4P22K-F is suitable for all applications previously supported by the original part. For existing systems using WMF4P22K, substitution with WMF4P22K-F requires no circuit modification due to identical ratings and physical form factor.

Frequently Asked Questions (FAQ)

Q: Can WMF4P22K-F replace WMF4P22K in all applications? A: Yes. Both parts share identical electrical specifications (0.22 µF, 400V DC, ±10% tolerance), dielectric material (polyester), operating temperature range (-55°C to 125°C), and physical dimensions (0.594" Dia x 1.374" L). Direct substitution is valid.

Q: What is the difference between WMF4P22K and WMF4P22K-F? A: The primary differences are product status and compliance. WMF4P22K is obsolete and RoHS non-compliant, while WMF4P22K-F is active and ROHS3 compliant. Electrical and mechanical parameters are identical.

Q: Are there any packaging differences? A: WMF4P22K is supplied with standard packaging, while WMF4P22K-F is supplied in bulk packaging. Both maintain the same axial through-hole form factor and dimensions.

Q: Is RoHS3 compliance a requirement for substitution? A: ROHS3 compliance is provided by WMF4P22K-F but was not present in the original WMF4P22K. Consider your regulatory requirements when selecting between these parts.

Q: Will PCB layout require modification when switching to WMF4P22K-F? A: No. Both parts are identical in physical dimensions and mounting type (axial through-hole), requiring no PCB layout changes.

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