940C8P22K Film Capacitor - Equivalent & Substitute Parts

Part Overview

The 940C8P22K is a 0.22 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with an 850V DC voltage rating and polypropylene dielectric. This part is designated as Obsolete, making identification of compatible substitutes essential for design continuity and procurement planning. The equivalent substitute maintains identical electrical specifications while addressing product lifecycle and compliance requirements.

Substiute Parts

940C8P22K

Cornell Dubilier Electronics (CDE)In Stock: 1113940C8P22K Datasheet

Current PartRFQ

940C8P22K-F

Cornell Dubilier Electronics (CDE)In Stock: 1106940C8P22K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 940C8P22K is determined by the following critical parameters:

• Electrical Parameters: Capacitance value (0.22 µF), tolerance (±10%), and voltage ratings (450V AC / 850V DC) must remain constant to ensure circuit functionality and safety margins.
• Physical Parameters: The axial package configuration, through-hole mounting type, and dimensional specifications (0.610" Dia x 1.339" L) are required for PCB layout compatibility.
• Material & Performance: Polypropylene metallized dielectric and 8 mOhms ESR specification define the frequency response and pulse handling capability suitable for high pulse and DV/DT applications.

The 940C8P22K-F substitute meets all specified parameters while transitioning from Obsolete to Active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 940C8P22K-F

The 940C8P22K-F is the direct equivalent substitute for the obsolete 940C8P22K. All electrical and mechanical specifications are identical, ensuring form, fit, and function compatibility. The 940C8P22K-F offers the following advantages for ongoing procurement:

• Product Status: Active production status ensures long-term availability and supply chain continuity.
• Compliance: RoHS3 compliant configuration meets current regulatory requirements, whereas the original 940C8P22K is RoHS non-compliant.
• Regulatory Status: Both parts maintain REACH Unaffected and EAR99 ECCN classification.

Selection of 940C8P22K-F is appropriate for new designs, redesigns, and production continuity scenarios where compliance and availability are factors.

Frequently Asked Questions (FAQ)

Q: Can the 940C8P22K-F be used as a direct replacement for the 940C8P22K in existing designs?

A: Yes. The 940C8P22K-F is electrically and mechanically identical to the 940C8P22K. All critical specifications—capacitance, voltage rating, dielectric material, ESR, temperature range, and physical dimensions—are identical. Direct substitution is appropriate without circuit redesign.

Q: What is the difference between the 940C8P22K and 940C8P22K-F?

A: The primary differences are product status and packaging configuration. The original 940C8P22K is Obsolete with RoHS non-compliant classification and tape/reel packaging. The 940C8P22K-F is Active production with RoHS3 compliance and bulk packaging. Electrical and mechanical specifications are identical.

Q: Does the 940C8P22K-F meet RoHS requirements?

A: Yes. The 940C8P22K-F is RoHS3 compliant. If regulatory compliance is a requirement for your application, the 940C8P22K-F is the appropriate selection over the RoHS non-compliant 940C8P22K.

Q: Are there any physical differences in the axial package between these parts?

A: No. Both parts use identical axial package specifications: 0.610" diameter by 1.339" length (15.50mm x 34.00mm). PCB footprints and mechanical clearances are identical, eliminating the need for layout modifications.

Q: What applications are suitable for this capacitor?

A: This 0.22 µF 850V DC film capacitor is specified for high pulse and DV/DT applications. The polypropylene metallized dielectric and 8 mOhms ESR provide performance suitable for pulse circuits and applications requiring controlled voltage transient response.

Q: Is moisture sensitivity a concern for this part?

A: No. Both the 940C8P22K and 940C8P22K-F are rated MSL 1 (Unlimited), indicating no moisture sensitivity and no special handling requirements during storage or manufacturing.