Equivalent & Substitute Parts for C927U331KYYDBA7317

Part Overview

The C927U331KYYDBA7317 is a 330 pF ceramic capacitor rated for 400VAC with Y5P temperature coefficient, manufactured by KEMET. This component is classified as a safety-rated capacitor (X1, Y2) designed for through-hole radial mounting in applications requiring high-voltage AC filtering and coupling. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility with existing circuit designs.

Substiute Parts

C927U331KYYDBA7317

KEMETIn Stock: 975C927U331KYYDBA7317 Datasheet

Current PartRFQ

VY2331K29Y5SS6UV7

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1154VY2331K29Y5SS6UV7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the C927U331KYYDBA7317 is determined by the following criteria:

Electrical Parameters (Non-Negotiable):

• Capacitance value must equal 330 pF
• Voltage rating must be ≥400VAC
• Tolerance must be ±10% or tighter
• Safety ratings must include X1 and Y2 classifications
• Operating temperature range must encompass -40°C to 125°C

Mechanical Parameters (Non-Negotiable):

• Mounting type must be through-hole radial
• Lead spacing must be 0.295" (7.50mm) for PCB compatibility
• Lead style must be formed leads with kinked configuration

Regulatory Parameters (Non-Negotiable):

• RoHS3 compliance required
• REACH unaffected status required

Temperature Coefficient Consideration: The Y5P temperature coefficient of the original part defines its capacitance stability characteristics. Substitute parts with Y5S or equivalent temperature coefficients within the same Y5 family are acceptable provided all other parameters are met.

Parameter Comparison

Engineering Selection Recommendations

The VY2331K29Y5SS6UV7 (Vishay Beyschlag/Draloric/BC Components) qualifies as a functional equivalent for the obsolete C927U331KYYDBA7317 based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters align: 330 pF capacitance, ±10% tolerance, X1/Y2 safety ratings, and -40°C to 125°C operating temperature range. The 440VAC voltage rating of the substitute exceeds the 400VAC requirement of the original part, providing additional safety margin in high-voltage applications.

Mechanical Compatibility: Lead spacing of 0.295" (7.50mm) matches the original specification, ensuring direct PCB footprint compatibility. Both parts utilize through-hole radial mounting with formed, kinked leads. Physical diameter differs (7.50mm vs. 9.00mm), which may affect board layout in space-constrained designs but does not compromise electrical function.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for component procurement and end-product certification.

Product Availability: The substitute part is in active production status with confirmed inventory availability (1106 pcs), whereas the original part is obsolete. Selection of the active substitute ensures long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the VY2331K29Y5SS6UV7 be used as a direct replacement for C927U331KYYDBA7317 on existing PCBs?

A: Yes, the substitute part is mechanically and electrically compatible. Lead spacing (0.295" / 7.50mm) matches the original specification. The physical diameter difference (7.50mm vs. 9.00mm) does not affect electrical performance or PCB mounting, though board layout may require verification in space-constrained areas.

Q: What is the difference between Y5P and Y5S temperature coefficients?

A: Both Y5P and Y5S are temperature coefficient classifications within the Y5 family, defining capacitance stability across the -40°C to 125°C operating range. The specific subcategories (P vs. S) represent different manufacturers' implementations of the Y5 standard. Both are acceptable for this application.

Q: Is the higher voltage rating (440VAC vs. 400VAC) of the substitute part acceptable?

A: Yes. A higher voltage rating provides additional safety margin and does not compromise circuit function. The substitute part is rated for 440VAC, exceeding the 400VAC requirement of the original part.

Q: Are both parts certified for safety-critical applications?

A: Yes. Both the original C927U331KYYDBA7317 and substitute VY2331K29Y5SS6UV7 carry X1 and Y2 safety ratings, qualifying them for safety-critical high-voltage AC applications.

Q: What is the packaging difference between the two parts?

A: The original part is supplied in standard packaging, while the substitute (VY2331K29Y5SS6UV7) is supplied in Tape & Box (TB) format. This affects handling and automated assembly processes but does not impact component performance or compatibility.

Q: Are there any compliance concerns with using the substitute part?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for component procurement and end-product certification.