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 operation, and featuring X7R temperature stability across -55°C to 125°C. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose applications requiring high-voltage performance. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when design requirements necessitate enhanced voltage ratings, improved tolerance specifications, or alternative inventory availability while maintaining core functional compatibility.

Substiute Parts

1812AC682MAT1A

KYOCERA AVXIn Stock: 9001812AC682MAT1A 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 strict adherence to the following parameters:

Fixed Parameters (Non-Negotiable):

• Capacitance: 6800 pF (exact match required)
• Package: 1812 (4532 Metric) (physical compatibility)
• Temperature Coefficient: X7R (thermal stability requirement)
• Operating Temperature: -55°C to 125°C (environmental specification)
• Mounting Type: Surface Mount, MLCC (assembly compatibility)

Variable Parameters (Substitution Criteria):

• Voltage Rating: May be equal or higher than 1000V
• Tolerance: May be equal or tighter than ±20%
• RoHS/REACH Compliance: Must maintain or exceed current certifications

The 1812GC682KAT1A qualifies as a direct substitute because it maintains all fixed parameters while providing enhanced voltage rating (2000V) and improved tolerance (±10%), representing an upgrade path for applications requiring higher safety margins or stricter capacitance accuracy.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC682MAT1A and 1812GC682KAT1A maintain Active product status with full ROHS3 compliance and REACH unaffected designation. Selection between these parts depends on application voltage requirements and tolerance specifications:

The 1812AC682MAT1A is appropriate for applications operating at or below 1000V with tolerance requirements of ±20% or wider. This part offers established inventory availability (861 Pcs in stock).

The 1812GC682KAT1A serves applications requiring 2000V operation or demanding tighter capacitance tolerance (±10%). The higher voltage rating provides additional design margin in high-voltage circuits. This substitute maintains identical physical dimensions and thermal characteristics while offering superior electrical specifications. Inventory availability is significantly higher (12,729 Pcs in stock).

Both parts are certified for unlimited moisture sensitivity (MSL 1), eliminating moisture-related handling constraints during assembly and storage.

Frequently Asked Questions (FAQ)

Q: Can 1812GC682KAT1A replace 1812AC682MAT1A in existing designs?

A: Yes. The substitute maintains identical capacitance (6800 pF), package dimensions (1812/4532 Metric), temperature coefficient (X7R), and operating temperature range (-55°C to 125°C). Physical compatibility is guaranteed. The higher voltage rating (2000V vs. 1000V) and improved tolerance (±10% vs. ±20%) represent performance enhancements with no functional drawbacks.

Q: What is the physical difference between these parts?

A: Both parts use the 1812 (4532 Metric) package with identical length (0.181" / 4.60mm) and width (0.126" / 3.20mm). The substitute has greater thickness: 0.110" (2.80mm) versus 0.071" (1.80mm) for the main part. This thickness difference must be evaluated for PCB layout clearance in space-constrained applications.

Q: Are there moisture sensitivity concerns with either part?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations. Standard handling procedures apply without special drying or baking requirements.

Q: Which part should be selected for new designs?

A: Selection is based on application voltage requirements. For circuits operating at 1000V or below, either part is suitable. For circuits approaching or exceeding 1000V, or where capacitance tolerance tighter than ±20% is required, the 1812GC682KAT1A is the appropriate choice.

Q: Are both parts RoHS compliant?

A: Yes. Both 1812AC682MAT1A and 1812GC682KAT1A are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.