WMF1D1K-F Equivalent & Substitute Parts

Part Overview

The WMF1D1K-F is a 1000 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the WMF series. This polyester film capacitor is rated for 100V DC operation and is designed for general-purpose through-hole applications with axial lead configuration. The product is active and ROHS3 compliant. Alternative models may be required when circuit design specifications call for higher voltage ratings or when original inventory becomes unavailable despite the current stock of 705 pieces.

Substiute Parts

WMF1D1K-F

Cornell Dubilier Electronics (CDE)In Stock: 760WMF1D1K-F Datasheet

Current PartRFQ

WMF2D1K-F

Cornell Dubilier Electronics (CDE)In Stock: 833WMF2D1K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Direct substitution for the WMF1D1K-F is limited to parts maintaining the following electrical and mechanical parameters: 1000 pF capacitance value, ±10% tolerance, polyester dielectric material, axial through-hole package configuration, and identical physical dimensions (0.189" Dia x 0.563" L). The WMF2D1K-F qualifies as a direct substitute based on these criteria, with the primary distinction being an elevated voltage rating of 250V DC compared to the original 100V DC specification. This higher voltage rating does not prevent substitution in circuits designed for 100V or lower operation.

Key substitution parameters:

• Capacitance: 1000 pF (fixed)
• Tolerance: ±10% (fixed)
• Dielectric Material: Polyester (fixed)
• Package Type: Axial (fixed)
• Physical Dimensions: 0.189" Dia x 0.563" L (fixed)
• Mounting Type: Through Hole (fixed)

Parameter Comparison

Engineering Selection Recommendations

The WMF2D1K-F substitutes for the WMF1D1K-F where circuit design specifications permit. Both parts are active products from Cornell Dubilier Electronics within the WMF series. Both maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) classification, ensuring equivalent regulatory and environmental qualification status. The WMF2D1K-F operates with a 250V DC rating, providing additional voltage margin in applications originally specified for 100V DC operation. Physical dimensions, capacitance value, tolerance, dielectric material, and mounting configuration remain identical between both parts, ensuring board-level compatibility without redesign. Selection between WMF1D1K-F and WMF2D1K-F should be determined by circuit voltage requirement and available inventory.

Frequently Asked Questions (FAQ)

Can WMF2D1K-F replace WMF1D1K-F in a 100V circuit? The WMF2D1K-F is electrically and mechanically compatible with circuits designed for the WMF1D1K-F. The 250V rating on WMF2D1K-F does not prevent operation in 100V applications. The capacitance value (1000 pF), tolerance (±10%), dielectric material (polyester), package type (axial), and physical dimensions (0.189" Dia x 0.563" L) are identical.

Are the physical dimensions identical? Both WMF1D1K-F and WMF2D1K-F share identical dimensions of 0.189" diameter and 0.563" length (4.80mm x 14.30mm), ensuring direct PCB placement compatibility without modification to board layouts or component spacing.

Do both parts have the same compliance certifications? Both parts are ROHS3 compliant and classified as Moisture Sensitivity Level 1 (Unlimited). Both maintain active product status and meet equivalent environmental and regulatory requirements for equivalent applications.

What is the primary functional difference between these parts? The voltage rating differs: WMF1D1K-F is rated at 100V DC, while WMF2D1K-F is rated at 250V DC. All other electrical specifications (capacitance, tolerance, temperature range) and mechanical specifications (package type, dimensions) remain identical.

Are termination methods the same? Both parts use PC Pins for termination and are configured for through-hole mounting, maintaining identical PCB assembly requirements and soldering processes.