Equivalent & Substitute Parts for C927U331KYYDBAWL45

Part Overview

The C927U331KYYDBAWL45 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 that maintain critical electrical and mechanical parameters for direct board-level substitution.

Substiute Parts

C927U331KYYDBAWL45

KEMETIn Stock: 1008C927U331KYYDBAWL45 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 eligibility for the C927U331KYYDBAWL45 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 330 pF
• Tolerance: ±10%
• Safety Ratings: X1, Y2
• Mounting Type: Through Hole
• Package Type: Radial, Disc
• Lead Spacing: 0.295" (7.50mm)
• Operating Temperature Range: -40°C ~ 125°C
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Voltage Rating: Minimum 400VAC (higher ratings acceptable)
• Temperature Coefficient: Y5P or Y5S (both acceptable for safety applications)
• Physical Diameter: Variations within mechanical compatibility constraints

The substitute parts VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 meet all mandatory parameters. Both feature 440VAC ratings, which exceed the original 400VAC specification, and employ Y5S temperature coefficient instead of Y5P. Both maintain identical capacitance, tolerance, safety ratings, lead spacing, and mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

Both Vishay substitute parts are suitable for direct replacement of the obsolete KEMET C927U331KYYDBAWL45 based on the following criteria:

Electrical Compatibility: Both VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 maintain identical capacitance (330 pF) and tolerance (±10%). The 440VAC rating provides a 40VAC margin above the original 400VAC specification, ensuring adequate safety margin in the application circuit. Both parts retain X1 and Y2 safety certifications required for the intended application.

Mechanical Compatibility: Lead spacing remains constant at 0.295" (7.50mm), ensuring direct PCB footprint compatibility. Both substitute parts employ identical through-hole radial disc configuration with kinked formed leads. The Vishay parts feature a smaller diameter (0.295" vs. 0.354"), which may provide improved board layout flexibility without compromising electrical performance.

Compliance and Availability: Both substitute parts are ROHS3 compliant and currently in active production status with substantial inventory availability (773 pcs and 19,891 pcs respectively). The active product status ensures long-term supply chain reliability compared to the obsolete original part.

Temperature Coefficient Consideration: The substitution from Y5P to Y5S temperature coefficient represents an acceptable variation within safety capacitor specifications. Both coefficients are approved for X1/Y2 safety applications and maintain the -40°C ~ 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 be used interchangeably with C927U331KYYDBAWL45?

A: Yes. Both Vishay parts are electrically and mechanically equivalent. The primary difference is packaging: VY2331K29Y5SG63V7 is supplied in standard packaging, while VY2331K29Y5SS63V7 is supplied in bulk packaging. Both maintain identical electrical specifications and lead configurations.

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

A: The 440VAC rating on Vishay parts exceeds the original 400VAC specification, providing additional safety margin. Higher voltage ratings do not negatively impact circuit performance in 400VAC applications; they only expand the operating envelope. This is a standard practice in component substitution.

Q: Will the smaller diameter (0.295" vs. 0.354") affect board layout?

A: No. The critical parameter for PCB compatibility is lead spacing, which remains constant at 0.295" (7.50mm). The smaller diameter of the Vishay parts may actually provide layout advantages by reducing board space requirements while maintaining identical electrical performance.

Q: Are the temperature coefficient differences (Y5P vs. Y5S) significant?

A: Both Y5P and Y5S are approved temperature coefficients for X1/Y2 safety capacitors. Both maintain the same -40°C ~ 125°C operating range. The substitution is acceptable for safety applications.

Q: What is the difference between VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7?

A: Both parts are electrically identical with matching specifications. The designation difference reflects packaging format: standard packaging versus bulk packaging. Selection depends on procurement and inventory management requirements.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both VY2331K29Y5SG63V7 and VY2331K29Y5SS63V7 are ROHS3 compliant, matching the compliance status of the original C927U331KYYDBAWL45.