1812GC392MAT3A\SB Equivalent & Substitute Parts

Part Overview

The 1812GC392MAT3A\SB is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 3900 pF, rated for 2000V (2kV) operation, and featuring X7R temperature coefficient characteristics. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production with 943 pieces available in inventory. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, or meet specific performance requirements in applications where voltage ratings or tolerance specifications may differ from the original specification.

Substiute Parts

1812GC392MAT3A\SB

KYOCERA AVXIn Stock: 9711812GC392MAT3A\SB Datasheet

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1812HC392KAT1A

KYOCERA AVXIn Stock: 46461812HC392KAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812GC392MAT3A\SB is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 3900 pF
• Temperature coefficient: X7R
• Package / Case: 1812 (4532 Metric)
• Mounting type: Surface Mount, MLCC
• Operating temperature range: -55°C to 125°C

Allowable Variation Parameters:

• Tolerance: ±20% (original) to ±10% (substitute) — tighter tolerance is acceptable
• Voltage rating: 2000V (original) to 3000V (substitute) — higher voltage rating is acceptable and provides design margin
• Thickness: 0.087" (2.20mm) original to 0.110" (2.80mm) substitute — within typical board assembly constraints

The substitute part 1812HC392KAT1A meets all mandatory matching criteria and provides enhanced performance through higher voltage rating (3000V vs 2000V) and improved tolerance specification (±10% vs ±20%), making it a direct upgrade path for applications requiring greater design margin or tighter capacitance control.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812GC392MAT3A\SB and 1812HC392KAT1A are active production parts from KYOCERA AVX with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use.

The 1812HC392KAT1A substitute provides two performance enhancements: a 50% increase in voltage rating (3000V vs 2000V) and improved capacitance tolerance (±10% vs ±20%). These characteristics make the substitute suitable for applications where higher voltage margin is required or where tighter capacitance control is necessary for circuit performance.

Selection between the main part and substitute should be based on circuit voltage requirements and tolerance specifications. The substitute part is compatible with existing PCB layouts and assembly processes, with the only consideration being the increased thickness (0.110" vs 0.087"), which remains within standard board assembly tolerances for 1812 package components.

Frequently Asked Questions (FAQ)

Q: Can 1812HC392KAT1A be used as a direct replacement for 1812GC392MAT3A\SB?

A: Yes. Both parts share identical capacitance (3900 pF), temperature coefficient (X7R), package (1812/4532 Metric), and operating temperature range (-55°C to 125°C). The substitute features higher voltage rating (3000V vs 2000V) and tighter tolerance (±10% vs ±20%), making it functionally compatible and performance-enhanced for the same application space.

Q: What is the difference in thickness between these parts?

A: The main part 1812GC392MAT3A\SB has a maximum thickness of 0.087" (2.20mm), while the substitute 1812HC392KAT1A has a maximum thickness of 0.110" (2.80mm). This 0.023" (0.60mm) difference is within standard PCB assembly clearances for 1812 package components and does not affect board-level compatibility.

Q: Does the higher voltage rating of the substitute affect circuit performance?

A: No. Higher voltage rating does not degrade circuit performance. The 3000V rating of 1812HC392KAT1A provides additional design margin and reliability in applications originally specified for 2000V operation.

Q: Are both parts available in the same packaging format?

A: The main part 1812GC392MAT3A\SB is available in standard packaging, while the substitute 1812HC392KAT1A is available in Tape & Reel (TR) format. Both are surface-mount components suitable for automated assembly processes.

Q: What does the ±10% tolerance improvement mean for circuit design?

A: The substitute part's ±10% tolerance (versus ±20% for the main part) provides tighter capacitance control, reducing circuit performance variation across production batches. This is beneficial for applications with strict capacitance requirements or where capacitance drift affects circuit stability.