1812AC222MAT1A Equivalent & Substitute Parts

Part Overview

The 1812AC222MAT1A is a 2200 pF, 1000V (1kV) ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient in 1812 (4532 Metric) surface mount package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained while addressing specific application requirements such as voltage rating upgrades, tolerance improvements, or alternative temperature coefficient specifications.

Substiute Parts

1812AC222MAT1A\SB

KYOCERA AVXIn Stock: 9131812AC222MAT1A\SB Datasheet

Current PartRFQ

1812AA222JAT1A

KYOCERA AVXIn Stock: 25411812AA222JAT1A Datasheet

UpgradeRFQ

1812GC222KAT1A

KYOCERA AVXIn Stock: 211151812GC222KAT1A Datasheet

UpgradeRFQ

C4532X7R3D222K130KA

TDK CorporationIn Stock: 2025C4532X7R3D222K130KA Datasheet

UpgradeRFQ

C4532X7R3D222M130KA

TDK CorporationIn Stock: 3701C4532X7R3D222M130KA Datasheet

UpgradeRFQ

C4532X7S3D222K160KA

TDK CorporationIn Stock: 2543C4532X7S3D222K160KA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812AC222MAT1A is determined by the following criteria:

Mandatory Compatibility Parameters:

• Capacitance: 2200 pF (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 1000V
• Tolerance: Equal to or tighter than ±20%
• Temperature Coefficient: X7R, X7S, or C0G/NP0 (alternative dielectric types with equivalent or superior stability)
• Manufacturer: KYOCERA AVX or other qualified manufacturers

Substitute parts are grouped into three categories based on their electrical characteristics relative to the main part: tolerance upgrades (tighter tolerance specifications), voltage upgrades (higher voltage ratings), and temperature coefficient alternatives (different dielectric materials with equivalent or superior performance).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications): No direct equivalent exists with identical voltage rating and tolerance. The 1812AC222MAT1A remains the primary selection for 1000V, ±20% tolerance applications.

For Tolerance Upgrade (±20% to ±5%): The 1812AA222JAT1A provides improved tolerance specification (±5%) while maintaining the same 1000V voltage rating and 1812 package. This part uses C0G/NP0 temperature coefficient, which provides superior temperature stability compared to X7R. Both parts are Active status and ROHS3 compliant. This substitution is suitable when tighter capacitance tolerance is required.

For Voltage Rating Upgrade (1000V to 2000V): Three options provide 2000V rating with 1812 package compatibility:

• 1812GC222KAT1A (KYOCERA AVX, X7R, ±10%, Active)
• C4532X7R3D222K130KA (TDK Corporation, X7R, ±10%, Active)
• C4532X7S3D222K160KA (TDK Corporation, X7S, ±10%, Active)

All three maintain Active product status and ROHS3 compliance. The KYOCERA AVX option maintains manufacturer consistency. The TDK options provide alternative sourcing with equivalent electrical performance.

For Temperature Coefficient Alternative (X7R to X7S): The C4532X7S3D222K160KA provides X7S temperature coefficient with 2000V rating. X7S offers wider temperature stability range compared to X7R, suitable for applications requiring enhanced performance across extended temperature extremes.

Parts Not Recommended for New Designs: The C4532X7R3D222M130KA carries "Not For New Designs" status and should not be selected for new applications despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use 1812AA222JAT1A as a direct replacement for 1812AC222MAT1A? A: The 1812AA222JAT1A is electrically compatible with identical capacitance (2200 pF), voltage rating (1000V), and package (1812). However, it features ±5% tolerance versus ±20%, and C0G/NP0 temperature coefficient versus X7R. This substitution is valid when improved tolerance is acceptable or required by circuit design.

Q: What is the difference between X7R and X7S temperature coefficients? A: Both X7R and X7S are Class II ceramic dielectrics with temperature-dependent capacitance. X7R specifies ±15% capacitance change over -55°C to 125°C. X7S specifies ±22% capacitance change over the same range. X7R provides tighter temperature stability; X7S provides wider operating margin. Selection depends on circuit tolerance requirements.

Q: Can I use a 2000V rated capacitor in a 1000V circuit? A: Yes. Higher voltage rating provides design margin and reliability improvement. The 1812GC222KAT1A, C4532X7R3D222K130KA, and C4532X7S3D222K160KA are all suitable for 1000V applications with enhanced voltage headroom.

Q: Are there physical dimension differences between KYOCERA AVX and TDK 1812 packages? A: Both manufacturers specify 1812 (4532 Metric) package with identical length (0.181" / 4.60mm) and width (0.126" / 3.20mm). KYOCERA AVX specifies maximum thickness of 0.071" (1.80mm); TDK specifies 0.059" (1.50mm). Both are compatible with standard 1812 footprints. Verify PCB assembly equipment clearance if thickness variation is critical.

Q: Why is C4532X7R3D222M130KA marked "Not For New Designs"? A: This designation indicates the manufacturer has discontinued active promotion of this part for new circuit designs. While electrically functional, it should not be selected for new applications. Use C4532X7R3D222K130KA (±10% tolerance) or C4532X7S3D222K160KA (X7S coefficient) as alternatives.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging? A: Both are surface mount packaging formats. Tape & Reel (TR) is standard for high-volume automated assembly. Cut Tape (CT) and Digi-Reel® are used for lower volumes or mixed component kits. Electrical performance is identical; packaging choice depends on assembly process and order quantity requirements.