1812AC332MAT1A Equivalent & Substitute Parts

Part Overview

The 1812AC332MAT1A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 3300 pF, rated for 1000V (1kV), and featuring X7R temperature coefficient characteristics. This surface-mount multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across a wide operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or application-specific performance needs.

Substiute Parts

1812AC332MAT1A

KYOCERA AVXIn Stock: 8801812AC332MAT1A Datasheet

Current PartRFQ

1812HC332KAT1A

KYOCERA AVXIn Stock: 70741812HC332KAT1A Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1812HC332KAT1A qualifies as a substitute for the 1812AC332MAT1A based on the following substitution criteria:

Matching Parameters:

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

Upgraded Parameters:

• Voltage - Rated: 3000V (3kV) versus 1000V (1kV) — higher voltage rating provides enhanced margin
• Tolerance: ±10% versus ±20% — tighter tolerance specification

The 1812HC332KAT1A is a direct footprint-compatible substitute with superior electrical specifications, making it suitable for applications where the original part is unavailable or where enhanced voltage margin and tolerance performance are beneficial.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC332MAT1A and 1812HC332KAT1A are active production parts with ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance for current applications. The 1812HC332KAT1A offers superior electrical performance with a 3000V voltage rating compared to the 1000V rating of the main part, along with improved tolerance specification (±10% versus ±20%).

The primary design consideration is the increased thickness of the substitute part: 0.110" (2.80mm) maximum versus 0.071" (1.80mm) for the original. This thickness difference must be evaluated against PCB layout constraints and assembly clearance requirements. When board space permits the additional height, the 1812HC332KAT1A provides enhanced design margin for high-voltage applications.

Frequently Asked Questions (FAQ)

Q: Can the 1812HC332KAT1A be used as a direct replacement for the 1812AC332MAT1A?

A: The 1812HC332KAT1A is footprint-compatible and electrically superior in voltage rating and tolerance. However, the increased thickness (2.80mm versus 1.80mm) requires verification of PCB assembly clearance and component stacking constraints before implementation.

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

A: The substitute part features a higher voltage rating (3000V versus 1000V), tighter tolerance (±10% versus ±20%), and greater thickness. Capacitance, temperature coefficient, operating temperature range, and package footprint remain identical.

Q: Are both parts suitable for high-voltage applications?

A: The 1812AC332MAT1A is rated for 1000V applications. The 1812HC332KAT1A, with its 3000V rating, is suitable for higher-voltage applications and provides additional safety margin in 1000V circuits.

Q: What is the impact of the tolerance difference?

A: The 1812HC332KAT1A's ±10% tolerance provides tighter capacitance control compared to the ±20% tolerance of the main part, resulting in more predictable circuit performance and reduced variation across production batches.

Q: Are there any packaging differences?

A: Both parts use identical footprint dimensions (0.181" L x 0.126" W). The substitute part is available in Tape & Reel packaging, while packaging information for the main part was not specified. The thickness difference (0.110" versus 0.071" maximum) is the primary physical consideration.