1812AC682MAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812AC682MAT1A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 6800 pF, rated for 1000V (1kV), 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 performance across the -55°C to 125°C operating temperature range. The part is currently active in production with 1005 units in stock. Substitute parts are identified when design requirements necessitate enhanced voltage ratings, improved tolerance specifications, or alternative packaging configurations while maintaining core electrical and mechanical compatibility.

Substiute Parts

1812AC682MAT1A\SB

KYOCERA AVXIn Stock: 10521812AC682MAT1A\SB Datasheet

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1812GC682KAT1A

KYOCERA AVXIn Stock: 127811812GC682KAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812AC682MAT1A is determined by the following criteria:

Core Compatibility Requirements:

• Capacitance value: 6800 pF (exact match required)
• Temperature coefficient: X7R (maintains stable capacitance across operating range)
• Package / Case: 1812 (4532 Metric) (ensures PCB footprint compatibility)
• Mounting type: Surface Mount, MLCC (maintains assembly process compatibility)
• Operating temperature range: -55°C to 125°C (minimum requirement)

Allowable Variations:

• Voltage rating: Equal to or greater than 1000V (higher ratings provide design margin)
• Tolerance: Equal to or tighter than ±20% (tighter tolerances acceptable for improved precision)
• Physical thickness: Variations acceptable if within board assembly clearance specifications
• Packaging format: Tape & Reel acceptable as alternative to standard packaging

The identified substitute 1812GC682KAT1A meets all core compatibility requirements while providing enhanced voltage rating (2000V) and improved tolerance (±10%).

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC682MAT1A and 1812GC682KAT1A are active production parts manufactured by KYOCERA AVX with full ROHS3 compliance and REACH unaffected status. Selection between these parts depends on application voltage requirements and tolerance specifications:

1812AC682MAT1A is appropriate for applications with maximum voltage requirements of 1000V and where ±20% capacitance tolerance is acceptable.

1812GC682KAT1A is appropriate for applications requiring 2000V voltage rating or where ±10% capacitance tolerance is specified. The increased thickness (2.80mm versus 1.80mm) must be evaluated against available PCB assembly clearance.

Both parts maintain identical capacitance value, temperature coefficient, operating temperature range, and core mechanical compatibility. The substitute part provides enhanced electrical performance margins through higher voltage rating and improved tolerance specification.

Frequently Asked Questions (FAQ)

Q: Can 1812GC682KAT1A be used as a direct replacement for 1812AC682MAT1A?

A: Yes, provided that PCB assembly clearance accommodates the increased thickness of 2.80mm (versus 1.80mm for the original part). The substitute maintains identical capacitance, temperature coefficient, package footprint, and mounting type.

Q: What is the primary difference between these two parts?

A: The substitute part provides doubled voltage rating (2000V versus 1000V) and improved capacitance tolerance (±10% versus ±20%). Both parts share identical capacitance value, temperature coefficient, and physical footprint dimensions.

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

A: The 1812AC682MAT1A is rated for 1000V applications. The 1812GC682KAT1A is rated for 2000V applications and provides additional voltage margin for high-voltage circuit designs.

Q: Does the increased thickness of the substitute part affect assembly compatibility?

A: The substitute part thickness of 2.80mm (versus 1.80mm) must be evaluated against available clearance in the PCB assembly. Verify clearance with respect to adjacent components and board constraints before implementation.

Q: Are both parts RoHS compliant?

A: Yes, both 1812AC682MAT1A and 1812GC682KAT1A are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).