Equivalent & Substitute Parts for 940C6W2K Film Capacitor

Part Overview

The 940C6W2K is a 2 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), designed for high-pulse and DV/DT applications. This axial-mounted polypropylene capacitor operates across a wide temperature range and is rated for 600V DC / 275V AC operation. The 940C6W2K carries an obsolete product status, making identification of active equivalent parts essential for procurement and design continuity.

Substiute Parts

940C6W2K

Cornell Dubilier Electronics (CDE)In Stock: 941940C6W2K Datasheet

Current PartRFQ

940C6W2K-F

Cornell Dubilier Electronics (CDE)In Stock: 1373940C6W2K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 940C6W2K is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 2 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Ratings: 600V DC / 275V AC (exact match required)
• Dielectric Type: Polypropylene (PP), Metallized (exact match required)
• ESR: 5 mOhms (exact match required)
• Temperature Range: -55°C to +105°C (exact match required)
• Mounting Configuration: Through Hole, Axial (exact match required)
• Physical Dimensions: 0.925" Dia × 1.811" L (exact match required)
• Termination Style: PC Pins (exact match required)

The 940C6W2K-F represents a direct equivalent part from the same manufacturer series (940C) with identical electrical and mechanical specifications. The primary distinction is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 940C6W2K-F is the direct active equivalent for the obsolete 940C6W2K. Selection between these parts is determined by regulatory and procurement requirements:

Use 940C6W2K-F when:

• New designs require active product status for long-term supply chain continuity
• RoHS3 compliance is mandated by application or customer requirements
• Bulk packaging aligns with procurement volume requirements

Use 940C6W2K when:

• Legacy system maintenance requires exact original part matching
• Existing inventory of the obsolete part is available and acceptable
• RoHS compliance is not a design constraint

Both parts are electrically and mechanically interchangeable for all high-pulse and DV/DT applications within the specified voltage and temperature operating ranges.

Frequently Asked Questions (FAQ)

Q: Can 940C6W2K-F be used as a direct replacement for 940C6W2K in existing designs?

A: Yes. The 940C6W2K-F is electrically and mechanically identical to the 940C6W2K. All electrical parameters, physical dimensions, and mounting characteristics are equivalent. The primary differences are product status (active vs. obsolete) and RoHS compliance level.

Q: What is the difference between the standard and bulk packaging options?

A: The 940C6W2K uses standard packaging, while the 940C6W2K-F uses bulk packaging. Both contain identical components. Packaging selection depends on procurement volume and inventory management requirements.

Q: Does the RoHS3 compliance of 940C6W2K-F affect electrical performance?

A: No. RoHS3 compliance is a regulatory and material composition designation. It does not alter the electrical specifications, performance characteristics, or operating parameters of the capacitor.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts measure 0.925" diameter × 1.811" length (23.50mm × 46.00mm). They are pin-compatible and mount identically in through-hole applications.

Q: What applications are these capacitors suitable for?

A: Both parts are rated for high-pulse and DV/DT applications. The 600V DC / 275V AC rating and polypropylene dielectric support demanding pulse and transient voltage environments.