1812AC103MATRE Equivalent & Substitute Parts

Part Overview

The 1812AC103MATRE is a 10000 pF (10 nF) ceramic capacitor rated for 1000V (1kV) with X7R temperature coefficient, manufactured by KYOCERA AVX. This high-voltage surface-mount multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across a wide operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization when the primary part is unavailable or when performance upgrades are required.

Key Parameters

Parameter	Value
Capacitance	10000 pF (10 nF)
Tolerance	±20%
Voltage Rating	1000V (1kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1812AC103MATRE is determined by the following critical parameters:

Capacitance Value: 10000 pF (exact match required)
Voltage Rating: 1000V minimum (equal or higher acceptable)
Temperature Coefficient: X7R or X7S (both acceptable for general-purpose applications)
Package / Case: 1812 (4532 Metric) form factor
Mounting Type: Surface Mount, MLCC
Tolerance: ±20% or tighter (±10% acceptable as upgrade)
Operating Temperature: -55°C to 125°C minimum
Compliance: ROHS3 and REACH requirements

Substitute parts are categorized as direct equivalents (matching all parameters), upgrades (improved tolerance or performance characteristics), or manufacturer-recommended alternatives (functionally equivalent with minor dimensional or feature variations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	RoHS Status	Product Status
1812AC103MATRE	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	Active
KGM43FR73A103MV	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.21mm)	ROHS3	Active
1812AC103KAT1A	KYOCERA AVX	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	Active
C1812C103KDRAC7800	KEMET	10000 pF	±10%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	Active
C4532X7R3A103K200KA	TDK Corporation	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	Active
C1812C103MDRAC7800	KEMET	10000 pF	±20%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	Active
C4532X7S3A103K160KA	TDK Corporation	10000 pF	±10%	1000V	X7S	1812 (4532)	0.071" (1.80mm)	ROHS3	Active
VPDR102W103M1GV001E	Johanson Dielectrics Inc.	10000 pF	±20%	1000V	X7R	1812 (4532)	0.110" (2.80mm)	ROHS3	Active

Engineering Selection Recommendations

Direct Equivalent (Same Tolerance)

KGM43FR73A103MV (KYOCERA AVX) and C1812C103MDRAC7800 (KEMET) are direct functional equivalents with matching ±20% tolerance and X7R temperature coefficient. Both parts maintain identical electrical specifications and are ROHS3 compliant with active product status. Selection between these and the primary part should be based on availability and procurement lead times.

Upgraded Tolerance (±10%)

1812AC103KAT1A (KYOCERA AVX), C1812C103KDRAC7800 (KEMET), and C4532X7R3A103K200KA (TDK Corporation) offer improved ±10% tolerance while maintaining all other critical parameters. These upgrades provide tighter capacitance control and are suitable for applications requiring enhanced precision. All three are active products with ROHS3 compliance.

Temperature Coefficient Alternative

C4532X7S3A103K160KA (TDK Corporation) substitutes X7S temperature coefficient for X7R. X7S provides wider temperature stability characteristics (-55°C to 125°C) and is functionally compatible for general-purpose applications. This part is active and ROHS3 compliant.

Cross-Manufacturer Selection

All substitute parts from KEMET and TDK Corporation meet the same voltage rating, capacitance value, package form factor, and compliance requirements. Selection among manufacturers should consider inventory availability, supply chain reliability, and established qualification history within your organization.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with ±10% tolerance in place of the ±20% original?

A: Yes. A tighter tolerance (±10%) is a direct upgrade and provides improved capacitance accuracy. The substitute will perform identically to the original while offering enhanced precision for applications sensitive to capacitance variation.

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

A: Both X7R and X7S maintain stable capacitance across the -55°C to 125°C operating range required for this application. X7S provides slightly wider temperature stability characteristics. For general-purpose applications, both are functionally equivalent.

Q: Are there physical size differences between substitute parts?

A: All parts use the 1812 (4532 Metric) package form factor. However, thickness varies: most parts measure 0.087" (2.20mm), while KEMET parts measure 0.061" (1.55mm) and the Johanson part measures 0.110" (2.80mm). Verify PCB layout clearance before substitution if thickness is a constraint.

Q: Can I substitute across different manufacturers?

A: Yes. All listed substitutes meet identical electrical specifications (10000 pF, 1000V, X7R or X7S, ±10% or ±20% tolerance) and package requirements. Cross-manufacturer substitution is valid provided your design qualifies the alternative manufacturer's part.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed parts are ROHS3 compliant.

Q: Is MSL 1 (Unlimited) moisture sensitivity important?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts carry MSL 1 rating, eliminating moisture-related handling constraints during storage and assembly.

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