KYOCERA AVX 1812WC332MAT3A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 1812WC332MAT3A is a high-voltage ceramic capacitor with a capacitance of 3300 pF, rated for 2500V operation, and housed in a 1812 (4532 Metric) surface-mount package. This component is classified as Active and maintains full RoHS3 compliance with MSL 1 rating. The part is suitable for general-purpose high-voltage applications requiring stable performance across the -55°C to 125°C operating temperature range. Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the original component.

Substiute Parts

1812WC332MAT3A\SB

KYOCERA AVXIn Stock: 8841812WC332MAT3A\SB Datasheet

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1812HC332KAT1A

KYOCERA AVXIn Stock: 70741812HC332KAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812WC332MAT3A is determined by the following critical parameters:

• Capacitance Value: Must be 3300 pF (no deviation permitted)
• Package / Case: Must be 1812 (4532 Metric) for mechanical and electrical compatibility
• Temperature Coefficient: Must be X7R to maintain stable performance across the operating temperature range
• Voltage Rating: Must be equal to or greater than 2500V
• Tolerance: May be equal to or tighter than ±20%
• Mounting Type: Must be Surface Mount, MLCC
• Compliance: Must maintain RoHS3 compliance and MSL 1 rating

The substitute part 1812HC332KAT1A meets all substitution criteria by maintaining identical capacitance, package, temperature coefficient, and mounting specifications while providing an upgraded voltage rating of 3000V and improved tolerance of ±10%.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812WC332MAT3A and 1812HC332KAT1A are Active products with full RoHS3 compliance and REACH Unaffected status. The 1812HC332KAT1A substitute provides enhanced specifications through a higher voltage rating (3000V versus 2500V) and tighter tolerance (±10% versus ±20%), while maintaining identical physical dimensions, package configuration, and thermal characteristics. Both components are classified under ECCN EAR99 and HTSUS 8532.24.0020. Selection between these parts depends on circuit voltage requirements and tolerance specifications. The substitute part is suitable for applications requiring higher voltage margins or improved capacitance accuracy.

Frequently Asked Questions (FAQ)

Q: Can the 1812HC332KAT1A replace the 1812WC332MAT3A in all applications?

A: Yes, the 1812HC332KAT1A is a direct substitute. It maintains identical capacitance (3300 pF), package dimensions (1812 / 4532 Metric), temperature coefficient (X7R), and mounting type (Surface Mount, MLCC). The higher voltage rating (3000V) and tighter tolerance (±10%) represent improvements over the original specification.

Q: Are there physical compatibility concerns when substituting these parts?

A: No. Both parts share identical physical dimensions (0.181" L × 0.126" W / 4.60mm × 3.20mm) and thickness (0.110" / 2.80mm), ensuring direct PCB footprint compatibility without layout modifications.

Q: What is the significance of the voltage rating difference?

A: The 1812HC332KAT1A operates at 3000V compared to the 2500V rating of the 1812WC332MAT3A. This provides additional voltage margin in high-voltage applications and does not restrict use in circuits designed for 2500V operation.

Q: How do tolerance specifications affect part selection?

A: The 1812HC332KAT1A offers ±10% tolerance versus ±20% for the original part. Tighter tolerance improves capacitance accuracy and may be required in precision circuits. Both tolerances are acceptable for general-purpose applications.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the 1812WC332MAT3A and 1812HC332KAT1A are ROHS3 compliant, REACH Unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level), meeting current regulatory requirements.

Q: What packaging options are available for the substitute part?

A: The 1812HC332KAT1A is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.