1812AC103MATME Equivalent & Substitute Parts

Part Overview

The 1812AC103MATME 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 temperature range (-55°C to 125°C). The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard manufacturing environments.

Equivalent and substitute parts are necessary when the original part number becomes unavailable, when alternative manufacturers offer improved specifications, or when design requirements allow for tighter tolerances or enhanced performance characteristics.

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 1812AC103MATME is determined by the following critical parameters:

Capacitance Value: Must be 10000 pF
Voltage Rating: Must be 1000V (1kV) or higher
Temperature Coefficient: X7R or X7S (both acceptable for general-purpose applications)
Package / Case: Must be 1812 (4532 Metric) for mechanical and electrical compatibility
Mounting Type: Must be Surface Mount, MLCC
Tolerance: ±20% or tighter (±10%) is acceptable as an upgrade
Compliance: ROHS3 compliant, MSL 1

Substitute parts are grouped into three categories based on their relationship to the original specification:

Direct Substitutes maintain identical electrical specifications (10000 pF, ±20%, 1000V, X7R).

Upgrade Substitutes offer improved tolerance (±10% instead of ±20%) while maintaining all other critical parameters.

Manufacturer-Recommended Alternatives include parts with different temperature coefficients (X7S) or from alternative manufacturers that meet or exceed the original performance requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temp Coeff	Package	Thickness (Max)	RoHS Status	Inventory
1812AC103MATME	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	1034 Pcs
KGM43FR73A103MV	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.21mm)	ROHS3	2712 Pcs
1812AC103KAT1A	KYOCERA AVX	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	2540 Pcs
C1812C103KDRAC7800	KEMET	10000 pF	±10%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	12273 Pcs
C4532X7R3A103K200KA	TDK Corporation	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	86839 Pcs
C1812C103MDRAC7800	KEMET	10000 pF	±20%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	2112 Pcs
C4532X7S3A103K160KA	TDK Corporation	10000 pF	±10%	1000V	X7S	1812 (4532)	0.071" (1.80mm)	ROHS3	1302 Pcs
VPDR102W103M1GV001E	Johanson Dielectrics Inc.	10000 pF	±20%	1000V	X7R	1812 (4532)	0.110" (2.80mm)	ROHS3	804 Pcs

Engineering Selection Recommendations

Direct Substitution (Same Specifications)

KGM43FR73A103MV and C1812C103MDRAC7800 are direct electrical equivalents to the 1812AC103MATME. Both maintain the 10000 pF capacitance, ±20% tolerance, 1000V rating, and X7R temperature coefficient. KGM43FR73A103MV is manufactured by KYOCERA AVX (same as the original) and is available in higher quantity (2712 Pcs). C1812C103MDRAC7800 is manufactured by KEMET and features lower profile thickness (0.061" vs 0.087"), which may be advantageous in space-constrained designs.

Upgrade Substitution (Improved Tolerance)

1812AC103KAT1A, C1812C103KDRAC7800, and C4532X7R3A103K200KA offer tighter tolerance (±10% instead of ±20%) while maintaining all other critical parameters. These parts are suitable when design requirements demand higher capacitance accuracy. C4532X7R3A103K200KA (TDK Corporation) has the highest inventory availability (86839 Pcs) and is recommended for high-volume applications. C1812C103KDRAC7800 (KEMET) offers the lowest profile (0.061" thickness) among upgrade options.

Alternative with Different Temperature Coefficient

C4532X7S3A103K160KA uses X7S temperature coefficient instead of X7R. X7S provides tighter capacitance stability over temperature (-55°C to 125°C) compared to X7R, making it suitable for applications requiring enhanced temperature performance. This part is manufactured by TDK Corporation and is ROHS3 compliant.

Cross-Manufacturer Substitution

VPDR102W103M1GV001E (Johanson Dielectrics Inc.) is a direct electrical equivalent with identical specifications but features a thicker profile (0.110" vs 0.087"). This part is suitable only when vertical space is not a constraint. It is packaged in Cut Tape (CT) format rather than Tape & Reel (TR), which may affect procurement and assembly processes.

All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

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

A: Yes. A tighter tolerance (±10%) is a direct upgrade and is fully compatible. The substitute will provide more precise capacitance values within a narrower range, which is acceptable for any application designed for ±20% tolerance.

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

A: Both X7R and X7S are Class II ceramic dielectrics suitable for general-purpose applications. X7R provides ±15% capacitance change over the -55°C to 125°C temperature range, while X7S provides ±22% change. X7S offers tighter stability and is recommended for temperature-sensitive circuits. X7R is the standard choice for general applications.

Q: Are all substitute parts mechanically compatible with the 1812 package footprint?

A: Yes. All substitute parts use the 1812 (4532 Metric) package designation, which specifies the same footprint dimensions (0.181" L x 0.126" W or 4.60mm x 3.20mm). However, thickness varies between parts (0.061" to 0.110"). Verify that your PCB design accommodates the maximum thickness of the selected substitute, particularly in space-constrained applications.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous reels suitable for automated pick-and-place assembly. Cut Tape (CT) packaging is supplied in strips and is typically used for manual assembly or lower-volume applications. Most substitute parts are available in TR format. VPDR102W103M1GV001E is supplied in CT format, which may require different handling during assembly.

Q: Which substitute part offers the best availability?

A: C4532X7R3A103K200KA (TDK Corporation) has the highest inventory availability at 86839 Pcs. This part also offers upgraded ±10% tolerance and is suitable for high-volume production requirements.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet the minimum electrical requirements (10000 pF, 1000V, X7R or X7S). However, using a single part number throughout a design simplifies procurement, inventory management, and traceability. If substitution is necessary due to availability, ensure the selected part meets all circuit requirements before implementation.

Q: Is ROHS3 compliance maintained across all substitute parts?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage conditions without special handling requirements.

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