940C10W2K Film Capacitor Equivalent & Substitute Parts

Part Overview

The 940C10W2K is a 2 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 1000V DC voltage rating, designed for high-pulse and DV/DT applications. This component features a polypropylene metallized dielectric in an axial through-hole package.

The 940C10W2K is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and legacy system requirements where this specific part number is specified or functionally required.

Substiute Parts

940C10W2K

Cornell Dubilier Electronics (CDE)In Stock: 809940C10W2K Datasheet

Current PartRFQ

940C10W2K-F

Cornell Dubilier Electronics (CDE)In Stock: 5000322940C10W2K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 940C10W2K is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance Value: 2 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - DC: 1000V (1kV) (exact match required)
• Voltage Rating - AC: 500V (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• ESR: 3 mOhms (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Physical Dimensions: 1.398" Dia x 1.811" L / 35.50mm x 46.00mm (exact match required)
• Termination: PC Pins (exact match required)

The substitute part 940C10W2K-F meets all specified electrical and mechanical parameters and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 940C10W2K-F is a direct functional equivalent to the 940C10W2K across all specified electrical and mechanical parameters. The primary distinction between these parts is product status and regulatory compliance:

940C10W2K (Main Part): Obsolete status with RoHS non-compliant classification. This part number is no longer in active production.

940C10W2K-F (Substitute): Active product status with ROHS3 compliance. This part is currently manufactured and available in production quantities.

For new designs, system upgrades, or applications where regulatory compliance is required, the 940C10W2K-F is the appropriate selection. For legacy system maintenance where the original 940C10W2K specification must be maintained, the 940C10W2K-F provides electrical and mechanical equivalence while offering improved compliance status and ongoing availability.

Frequently Asked Questions (FAQ)

Q: Can the 940C10W2K-F be used as a direct replacement for the 940C10W2K?

A: Yes. The 940C10W2K-F is electrically and mechanically equivalent to the 940C10W2K. All specified parameters including capacitance, voltage ratings, dielectric material, ESR, operating temperature range, physical dimensions, and termination are identical.

Q: What is the difference between the 940C10W2K and 940C10W2K-F?

A: The primary differences are product status and regulatory compliance. The 940C10W2K is obsolete and RoHS non-compliant. The 940C10W2K-F is an active product with ROHS3 compliance. Both parts are manufactured by Cornell Dubilier Electronics and share the same 940C series designation.

Q: Are there any physical differences between these parts?

A: No. Both parts have identical physical dimensions of 1.398" diameter by 1.811" length (35.50mm x 46.00mm) and use the same axial through-hole package with PC pin termination.

Q: What applications are these capacitors suitable for?

A: Both the 940C10W2K and 940C10W2K-F are specified for high-pulse and DV/DT applications, with a 1000V DC voltage rating and 500V AC voltage rating.

Q: Is the 940C10W2K-F available in different packaging options?

A: The 940C10W2K-F is supplied in bulk packaging. The 940C10W2K was supplied with standard packaging. Both maintain identical component specifications.

Q: What is the operating temperature range for these capacitors?

A: Both parts operate across a temperature range of -55°C to 105°C, with an ESR of 3 mOhms maintained across this range.