Equivalent & Substitute Parts for C927U331KYYDBAWL40

Part Overview

The C927U331KYYDBAWL40 is a 330 pF ceramic capacitor rated for 400VAC with Y5P temperature coefficient, manufactured by KEMET. This radial, disc-type capacitor is designed for safety applications requiring X1 and Y2 ratings. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain the same capacitance value, tolerance, safety ratings, and mounting configuration while accommodating minor variations in voltage rating and temperature coefficient within acceptable operating parameters.

Substiute Parts

C927U331KYYDBAWL40

KEMETIn Stock: 946C927U331KYYDBAWL40 Datasheet

Current PartRFQ

VY2331K29Y5SG63V7

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 872VY2331K29Y5SG63V7 Datasheet

SimilarRFQ

VY2331K29Y5SS63V7

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 19985VY2331K29Y5SS63V7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the C927U331KYYDBAWL40 is based on the following critical parameters:

Mandatory Matching Criteria:

• Capacitance: 330 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Safety Ratings: X1, Y2 (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Disc (exact match required)
• Lead Style: Formed Leads - Kinked (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

Allowable Variation Parameters:

• Voltage Rating: 400VAC (substitute parts rated 440VAC are acceptable as higher voltage rating provides equivalent or superior performance in the same application)
• Temperature Coefficient: Y5P (B) to Y5S (both Y5-class coefficients are functionally equivalent for safety applications)
• Physical Dimensions: Minor variations in diameter and height are acceptable provided lead spacing remains 0.295" (7.50mm) for PCB compatibility

The substitute parts VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 meet all mandatory criteria and are classified as direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 are qualified substitutes for the obsolete C927U331KYYDBAWL40. Selection between these two Vishay alternatives is determined by packaging and inventory requirements rather than electrical performance.

VY2331K29Y5SG63V7 is suitable for applications requiring standard packaging with moderate inventory availability (773 pcs in stock).

VY2331K29Y5SS63V7 is suitable for high-volume production requirements, offering bulk packaging with significantly higher inventory availability (19,891 pcs in stock).

Both parts exceed the original voltage specification (440VAC vs. 400VAC), providing enhanced safety margin in the application circuit. Both maintain ROHS3 compliance and identical safety ratings (X1, Y2). The Y5S temperature coefficient of the Vishay substitutes is functionally equivalent to the Y5P coefficient of the original KEMET part for safety-rated ceramic capacitor applications.

Frequently Asked Questions (FAQ)

Q: Can VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 be used interchangeably?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: VY2331K29Y5SG63V7 uses standard packaging, while VY2331K29Y5SS63V7 uses bulk packaging. Selection depends on procurement and assembly requirements.

Q: Why is the voltage rating higher on the substitute parts (440VAC vs. 400VAC)?

A: The 440VAC rating on Vishay substitutes represents a higher voltage specification than the original 400VAC requirement. Higher voltage-rated capacitors are acceptable substitutes in applications requiring lower voltage ratings, as they provide additional safety margin and performance headroom.

Q: Are the temperature coefficients Y5P and Y5S compatible?

A: Yes. Both Y5P and Y5S are Y5-class temperature coefficients used in safety-rated ceramic capacitors. Both coefficients are specified for the same operating temperature range (-40°C ~ 125°C) and are functionally equivalent for safety applications.

Q: Will the substitute parts fit the existing PCB layout?

A: Yes. All three parts maintain identical lead spacing of 0.295" (7.50mm) and use formed, kinked leads. Physical dimensions are compatible with PCB designs for the original C927U331KYYDBAWL40.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 are ROHS3 compliant, matching the compliance status of the original part.

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

A: VY2331K29Y5SG63V7 (standard packaging) is suitable for smaller orders and mixed component procurement. VY2331K29Y5SS63V7 (bulk packaging) is optimized for high-volume manufacturing with larger inventory quantities per order.