Equivalent & Substitute Parts for C927U331KYYDAAWL45

Part Overview

The C927U331KYYDAAWL45 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 C927U331KYYDAAWL45 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

C927U331KYYDAAWL45

KEMETIn Stock: 1011C927U331KYYDAAWL45 Datasheet

Current PartRFQ

WKO331KCPCF0KR

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the C927U331KYYDAAWL45 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 330 pF
• Tolerance: ±10%
• Safety ratings: X1, Y2
• 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 Parameters:

• Voltage rating: Equal to or greater than 400VAC
• Temperature coefficient: Y5P or Y5T (both within Y5 class, acceptable for safety applications)
• Physical dimensions: Minor variations permitted if lead spacing and mounting compatibility are maintained

The WKO331KCPCF0KR qualifies as a substitute based on matching all mandatory parameters while exceeding voltage rating (440VAC vs. 400VAC) and maintaining equivalent temperature coefficient classification within the Y5 series.

Parameter Comparison

Engineering Selection Recommendations

The WKO331KCPCF0KR from Vishay Beyschlag/Draloric/BC Components is qualified as a direct substitute for the obsolete C927U331KYYDAAWL45.

Basis for Selection:

1. Electrical Equivalence: Both components maintain identical capacitance (330 pF), tolerance (±10%), and safety ratings (X1, Y2). The substitute's 440VAC rating exceeds the original 400VAC requirement, providing additional voltage margin.

2. Temperature Performance: Both components operate across the identical temperature range (-40°C to 125°C). The Y5T temperature coefficient of the substitute is within the Y5 classification, maintaining thermal stability characteristics required for safety applications.

3. Mechanical Compatibility: Lead spacing (0.295" / 7.50mm) is identical, ensuring direct PCB footprint compatibility. The substitute's smaller body diameter (8.00mm vs. 9.00mm) presents no compatibility issues and may provide improved PCB layout flexibility.

4. Regulatory Compliance: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

5. Product Status: The substitute is classified as active, ensuring ongoing availability and supply chain support.

Frequently Asked Questions (FAQ)

Q: Can the WKO331KCPCF0KR be used as a direct replacement without PCB modification?

A: Yes. The WKO331KCPCF0KR maintains identical lead spacing (7.50mm) and through-hole mounting configuration. No PCB layout changes are required. The smaller body diameter (8.00mm vs. 9.00mm) is mechanically compatible with existing PCB footprints designed for the original component.

Q: What is the significance of the temperature coefficient difference (Y5P vs. Y5T)?

A: Both Y5P and Y5T coefficients fall within the Y5 temperature coefficient class, which specifies capacitance change limits across the operating temperature range. Both are acceptable for safety-rated applications. The Y5T specification of the substitute maintains equivalent thermal stability performance.

Q: Does the higher voltage rating (440VAC vs. 400VAC) affect circuit performance?

A: No. A higher voltage rating does not negatively impact circuit performance. The substitute's 440VAC rating provides additional voltage margin and safety headroom, making it suitable for applications originally designed for 400VAC operation.

Q: Are there any lead time or availability advantages to using the substitute?

A: The WKO331KCPCF0KR is classified as active product status, indicating current manufacturing and distribution support. The original C927U331KYYDAAWL45 is obsolete, making the substitute the preferred choice for new procurement and ongoing supply requirements.

Q: What certifications and compliance standards apply to both components?

A: Both components are ROHS3 compliant and REACH unaffected. Both carry X1 and Y2 safety ratings, qualifying them for safety-critical applications. Both meet ECCN EAR99 and HTSUS 8532.23.0060 classifications.