Equivalent & Substitute Parts for C927U331KYYDAAWL35

Part Overview

The C927U331KYYDAAWL35 is a 330 pF ceramic capacitor manufactured by KEMET, rated for 400VAC operation with Y5P temperature coefficient classification. This component is designed for safety-rated applications requiring X1 and Y2 ratings in radial, disc configuration with through-hole mounting.

The product status is listed as Obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility while ensuring continued availability for production and maintenance applications.

Substiute Parts

C927U331KYYDAAWL35

KEMETIn Stock: 1055C927U331KYYDAAWL35 Datasheet

Current PartRFQ

WKO331KCPCF0KR

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 845WKO331KCPCF0KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the C927U331KYYDAAWL35 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value: 330 pF
• Tolerance: ±10%
• Safety ratings: X1, Y2 classification
• Mounting type: Through Hole
• Package configuration: Radial, Disc
• Lead spacing: 0.295" (7.50mm)
• Operating temperature range: -40°C to 125°C minimum
• RoHS3 compliance

Allowable Variation:

• Voltage rating: Substitute must equal or exceed 400VAC
• Temperature coefficient: Y5P or Y5T classifications are functionally equivalent within the specified operating range
• Physical dimensions: Minor variations in diameter and height are acceptable provided lead spacing remains constant

The WKO331KCPCF0KR from Vishay Beyschlag/Draloric/BC Components satisfies all mandatory criteria and allowable variations.

Parameter Comparison

Engineering Selection Recommendations

The WKO331KCPCF0KR is a direct functional substitute for the obsolete C927U331KYYDAAWL35. Selection is based on the following engineering factors:

Product Status Consideration: The KEMET C927U331KYYDAAWL35 is classified as Obsolete, while the Vishay WKO331KCPCF0KR maintains Active product status, ensuring long-term availability and supply chain continuity.

Compliance Alignment: Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent substitution in safety-rated applications.

Electrical Equivalence: The substitute component provides 440VAC rating, which exceeds the 400VAC requirement of the original part. Both components operate across the identical temperature range (-40°C to 125°C) and maintain X1, Y2 safety classifications required for the application.

Mechanical Compatibility: Lead spacing of 0.295" (7.50mm) is identical between both components, ensuring direct PCB footprint compatibility. The substitute component features a smaller disc diameter (8.00mm versus 9.00mm), which presents no functional limitation and may provide improved board layout flexibility.

Temperature Coefficient: The Y5T classification of the substitute component is functionally equivalent to the Y5P classification of the original part within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the WKO331KCPCF0KR be used as a direct replacement for the C927U331KYYDAAWL35 on existing PCBs?

A: Yes. The lead spacing of 0.295" (7.50mm) is identical, and the smaller disc diameter of the substitute component does not create mechanical interference. The component will mount directly into existing through-hole positions without modification.

Q: What is the significance of the higher 440VAC rating on the substitute part?

A: The 440VAC rating on the WKO331KCPCF0KR exceeds the 400VAC requirement of the original application. This provides additional voltage margin and does not negatively impact circuit performance. The capacitance value, tolerance, and safety ratings remain functionally equivalent.

Q: Are the Y5P and Y5T temperature coefficients interchangeable?

A: Both Y5P and Y5T classifications operate within the same temperature range (-40°C to 125°C) and are suitable for safety-rated applications. The substitute component's Y5T classification is functionally equivalent for this application.

Q: Does the smaller physical diameter of the substitute component affect performance?

A: No. The smaller disc diameter (8.00mm versus 9.00mm) is a physical dimension variation that does not affect electrical performance, capacitance value, voltage rating, or safety classification. Lead spacing remains constant at 0.295" (7.50mm).

Q: Are both components RoHS3 compliant?

A: Yes. Both the C927U331KYYDAAWL35 and WKO331KCPCF0KR are ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements for equivalent substitution.

Q: What is the primary reason for substitution?

A: The C927U331KYYDAAWL35 is classified as Obsolete. The WKO331KCPCF0KR maintains Active product status, ensuring continued availability for production and maintenance applications.