1812SC222KAT3A Ceramic Capacitor Equivalent & Substitute Parts

Part Overview

The 1812SC222KAT3A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 2200 pF, rated voltage of 1500V (1.5kV), and X7R temperature coefficient. 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 974 pieces in stock. Equivalent and substitute parts are identified based on matching or exceeding electrical specifications while maintaining mechanical compatibility with the 1812 package footprint.

Key Parameters

Parameter	Value
Capacitance	2200 pF
Tolerance	±10%
Voltage - Rated	1500V (1.5kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1812SC222KAT3A is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 2200 pF
Tolerance: ±10%
Package / Case: 1812 (4532 Metric)
Mounting Type: Surface Mount, MLCC
Operating Temperature Range: -55°C ~ 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Voltage - Rated: Equal to or greater than 1500V (1.5kV)
Temperature Coefficient: X7R or X7S (both acceptable for general-purpose applications)
Manufacturer: Different manufacturers permitted if all other parameters match

The identified substitute parts meet these criteria and are grouped by voltage rating upgrade and temperature coefficient variation.

Parameter Comparison

Parameter	1812SC222KAT3A (Main)	1812GC222KAT1A (KYOCERA AVX)	C4532X7R3D222K130KA (TDK)	C4532X7S3D222K160KA (TDK)
Manufacturer	KYOCERA AVX	KYOCERA AVX	TDK Corporation	TDK Corporation
Capacitance	2200 pF	2200 pF	2200 pF	2200 pF
Tolerance	±10%	±10%	±10%	±10%
Voltage - Rated	1500V (1.5kV)	2000V (2kV)	2000V (2kV)	2000V (2kV)
Temperature Coefficient	X7R	X7R	X7R	X7S
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)
Size / Dimension	0.181" L x 0.126" W (4.60mm x 3.20mm)	0.181" L x 0.126" W (4.60mm x 3.20mm)	0.177" L x 0.126" W (4.50mm x 3.20mm)	0.177" L x 0.126" W (4.50mm x 3.20mm)
Thickness (Max)	0.071" (1.80mm)	0.071" (1.80mm)	0.059" (1.50mm)	Not specified
Mounting Type	Surface Mount, MLCC	Surface Mount, MLCC	Surface Mount, MLCC	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Inventory (Pcs)	974	21100	1961	2457

Engineering Selection Recommendations

All identified substitute parts are active products with ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the main part.

1812GC222KAT1A (KYOCERA AVX): Direct manufacturer upgrade with identical physical dimensions (0.181" L x 0.126" W, 0.071" max thickness) and X7R temperature coefficient. Voltage rating increased to 2000V (2kV). Highest inventory availability at 21100 pieces. Recommended for direct replacement in applications where higher voltage margin is acceptable.

C4532X7R3D222K130KA (TDK Corporation): Cross-manufacturer substitute with X7R temperature coefficient and 2000V (2kV) voltage rating. Slightly reduced physical dimensions (0.177" L x 0.126" W, 0.059" max thickness) and thinner profile. Suitable for space-constrained layouts. Inventory: 1961 pieces.

C4532X7S3D222K160KA (TDK Corporation): Cross-manufacturer substitute with X7S temperature coefficient (narrower temperature stability range compared to X7R) and 2000V (2kV) voltage rating. Reduced physical dimensions (0.177" L x 0.126" W). Manufacturer-recommended option. Inventory: 2457 pieces.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original 1812SC222KAT3A?

A: Yes. All identified substitutes are rated at 2000V (2kV), which exceeds the original 1500V (1.5kV) specification. Higher voltage ratings provide additional safety margin and are electrically compatible in applications designed for the original part.

Q: What is the difference between X7R and X7S temperature coefficients?

A: Both X7R and X7S are temperature-stable ceramic dielectric types suitable for general-purpose applications across the -55°C to 125°C operating range. X7R provides ±15% capacitance change over temperature, while X7S provides ±22% change. For this application category, both are acceptable substitutes.

Q: Are there physical dimension differences between the main part and substitutes?

A: The KYOCERA AVX 1812GC222KAT1A maintains identical dimensions to the main part (0.181" L x 0.126" W, 0.071" max thickness). The TDK substitutes (C4532X7R3D222K130KA and C4532X7S3D222K160KA) have slightly reduced dimensions (0.177" L x 0.126" W, 0.059" max thickness). Both footprints are compatible with standard 1812 (4532 Metric) PCB layouts.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 with HTSUS code 8532.24.0020, matching the regulatory status of the main part.

Q: What packaging options are available for the substitute parts?

A: 1812GC222KAT1A is supplied in Tape & Reel (TR) packaging. C4532X7R3D222K130KA is available in Cut Tape (CT) & Digi-Reel® packaging. C4532X7S3D222K160KA is supplied in Tape & Reel (TR) packaging.

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