1812AC100JAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812AC100JAT1A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 10 pF, rated voltage of 1000V (1kV), and X7R temperature coefficient. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose applications requiring high-voltage performance. The part is currently active in production with 786 units in stock. Alternative models may be required due to design upgrades, voltage margin requirements, temperature coefficient specifications, or supply chain considerations.

Substiute Parts

1812AC100JAT1A\SB

KYOCERA AVXIn Stock: 8611812AC100JAT1A\SB Datasheet

Current PartRFQ

1812HA100JAT1A

KYOCERA AVXIn Stock: 11511812HA100JAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812AC100JAT1A is determined by the following critical parameters:

• Capacitance Value: Must remain 10 pF to maintain circuit function
• Tolerance: Must be ±5% or tighter
• Package / Case: Must be 1812 (4532 Metric) for PCB footprint compatibility
• Mounting Type: Must be Surface Mount, MLCC
• Operating Temperature Range: Must support -55°C ~ 125°C minimum
• Voltage Rating: Must be equal to or greater than 1000V (1kV)
• Temperature Coefficient: May differ (X7R to C0G/NP0 represents an upgrade in stability)
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The substitute part 1812HA100JAT1A meets all mechanical and electrical compatibility requirements while offering an upgraded voltage rating of 3000V (3kV) and improved temperature coefficient (C0G/NP0).

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC100JAT1A and 1812HA100JAT1A are active production parts from KYOCERA AVX with full ROHS3 compliance and MSL 1 rating. The substitute part 1812HA100JAT1A provides a direct mechanical fit with identical footprint dimensions and improved electrical performance through a tripled voltage rating (3kV vs. 1kV) and superior temperature coefficient stability (C0G/NP0 vs. X7R). The substitute part features reduced thickness (1.45mm vs. 1.80mm), which may provide additional design flexibility. Selection between these parts depends on circuit voltage requirements and temperature coefficient specifications for the application.

Frequently Asked Questions (FAQ)

Q: Can 1812HA100JAT1A replace 1812AC100JAT1A in all applications?

A: Yes, provided the circuit design accommodates the upgraded specifications. The substitute part maintains identical capacitance (10 pF), tolerance (±5%), package footprint (1812/4532 Metric), and operating temperature range (-55°C ~ 125°C). The higher voltage rating (3kV) and improved temperature coefficient (C0G/NP0) are compatible with any circuit designed for the original part.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients?

A: X7R provides ±15% capacitance change over the operating temperature range. C0G/NP0 provides superior stability with 0 ppm/°C temperature coefficient. C0G/NP0 is suitable for applications requiring tighter capacitance tolerance across temperature variations.

Q: Are the physical dimensions identical 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 part has reduced maximum thickness (0.057" / 1.45mm vs. 0.071" / 1.80mm), which may provide additional clearance in space-constrained designs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level) rating. Both are classified under ECCN EAR99 and HTSUS 8532.24.0020.

Q: What inventory levels are available?

A: The main part 1812AC100JAT1A has 786 units in stock. The substitute part 1812HA100JAT1A has 1110 units in stock, both as new original components.