1812WC332MAT1A Equivalent & Substitute Parts

Part Overview

The 1812WC332MAT1A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 3300 pF, rated voltage of 2500V (2.5kV), and X7R temperature coefficient. This Surface Mount MLCC (Multilayer Ceramic Capacitor) in 1812 (4532 Metric) package is designed for general-purpose applications requiring high-voltage performance. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Alternative models may be required due to inventory constraints, application voltage upgrades, or tolerance specifications.

Substiute Parts

1812WC332MAT1A\SB

KYOCERA AVXIn Stock: 10341812WC332MAT1A\SB Datasheet

Current PartRFQ

1812HC332KAT1A

KYOCERA AVXIn Stock: 70741812HC332KAT1A Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1812HC332KAT1A qualifies as a direct substitute for the 1812WC332MAT1A based on the following substitution criteria:

Matching Parameters:

• Capacitance: 3300 pF (identical)
• Temperature Coefficient: X7R (identical)
• Mounting Type: Surface Mount, MLCC (identical)
• Package / Case: 1812 (4532 Metric) (identical)
• Physical Dimensions: 0.181" L x 0.126" W (4.60mm x 3.20mm) (identical)
• Thickness (Max): 0.110" (2.80mm) (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

Upgraded Parameters:

• Voltage - Rated: 3000V (3kV) vs. 2500V (2.5kV) — higher voltage rating provides enhanced margin
• Tolerance: ±10% vs. ±20% — tighter tolerance specification

The 1812HC332KAT1A represents an upgrade path with improved electrical specifications while maintaining full mechanical and thermal compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812WC332MAT1A and 1812HC332KAT1A are Active products with ROHS3 compliance and REACH Unaffected status, ensuring regulatory compliance for current applications. The 1812HC332KAT1A offers enhanced electrical performance through a higher voltage rating (3000V vs. 2500V) and improved tolerance specification (±10% vs. ±20%), making it suitable for applications requiring greater voltage margin or tighter capacitance control. Selection between these parts should be based on circuit voltage requirements and tolerance specifications. Both parts maintain identical mechanical compatibility and thermal characteristics, enabling direct substitution at the board level.

Frequently Asked Questions (FAQ)

Q: Can the 1812HC332KAT1A replace the 1812WC332MAT1A in existing designs?

A: Yes. The 1812HC332KAT1A is mechanically and electrically compatible as a direct substitute. It features identical physical dimensions (1812 / 4532 Metric package), capacitance value (3300 pF), temperature coefficient (X7R), and operating temperature range (-55°C ~ 125°C). The substitute part provides upgraded voltage rating (3000V vs. 2500V) and tighter tolerance (±10% vs. ±20%).

Q: What are the key differences between these two parts?

A: The primary differences are voltage rating and tolerance. The 1812HC332KAT1A is rated for 3000V compared to 2500V for the 1812WC332MAT1A, and offers ±10% tolerance versus ±20%. All other electrical and mechanical specifications remain identical.

Q: Are there any packaging differences?

A: The 1812WC332MAT1A is supplied in standard packaging, while the 1812HC332KAT1A is supplied in Tape & Reel (TR) format. Both use the same 1812 (4532 Metric) package footprint with identical dimensions and mounting characteristics.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Both carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements.

Q: Which part should I select for new designs?

A: Selection depends on circuit voltage requirements and tolerance specifications. If your application operates below 2500V and can tolerate ±20% capacitance variation, either part is suitable. For applications requiring higher voltage margin or tighter capacitance control, the 1812HC332KAT1A is the appropriate choice.