1812AC103MAT3A\SB Equivalent & Substitute Parts

Part Overview

The 1812AC103MAT3A\SB is a 10000 pF (0.01 µF) ceramic capacitor manufactured by KYOCERA AVX with a 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 845 pieces in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, lead time considerations, or design optimization needs.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Tolerance	±20%
Voltage - Rated	1000V (1kV)
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 1812AC103MAT3A\SB is determined by strict equivalence in the following parameters:

Capacitance: 10000 pF (exact match required)
Voltage Rating: 1000V (1kV) minimum (equal or higher acceptable)
Temperature Coefficient: X7R or X7S (both acceptable for general purpose applications)
Package: 1812 (4532 Metric) form factor
Mounting Type: Surface Mount, MLCC
Operating Temperature: -55°C ~ 125°C minimum range
Compliance: ROHS3 Compliant, REACH Unaffected, MSL 1

Substitute parts are categorized as follows:

Direct Equivalent (Same Tolerance ±20%): KGM43FR73A103MV (KYOCERA AVX), C1812C103MDRAC7800 (KEMET), VPDR102W103M1GV001E (Johanson Dielectrics Inc.)

Upgrade Equivalent (Tighter Tolerance ±10%): 1812AC103KAT1A (KYOCERA AVX), C1812C103KDRAC7800 (KEMET), C4532X7R3A103K200KA (TDK Corporation)

Alternative Temperature Coefficient (X7S): C4532X7S3A103K160KA (TDK Corporation) - acceptable where X7S performance meets application requirements

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage - Rated	Temperature Coefficient	Operating Temperature	Package / Case	Size / Dimension (L x W)	Thickness (Max)	RoHS Status	MSL	Inventory
1812AC103MAT3A\SB	KYOCERA AVX	10000 pF	±20%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.181" x 0.126" (4.60mm x 3.20mm)	0.087" (2.20mm)	ROHS3 Compliant	1	845 Pcs
KGM43FR73A103MV	KYOCERA AVX	10000 pF	±20%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.181" x 0.126" (4.60mm x 3.20mm)	0.087" (2.21mm)	ROHS3 Compliant	1	2712 Pcs
1812AC103KAT1A	KYOCERA AVX	10000 pF	±10%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.181" x 0.126" (4.60mm x 3.20mm)	0.087" (2.20mm)	ROHS3 Compliant	1	2540 Pcs
C1812C103KDRAC7800	KEMET	10000 pF	±10%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.177" x 0.126" (4.50mm x 3.20mm)	0.061" (1.55mm)	ROHS3 Compliant	1	12273 Pcs
C4532X7R3A103K200KA	TDK Corporation	10000 pF	±10%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.177" x 0.126" (4.50mm x 3.20mm)	0.087" (2.20mm)	ROHS3 Compliant	1	86839 Pcs
C1812C103MDRAC7800	KEMET	10000 pF	±20%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.177" x 0.126" (4.50mm x 3.20mm)	0.061" (1.55mm)	ROHS3 Compliant	1	2112 Pcs
C4532X7S3A103K160KA	TDK Corporation	10000 pF	±10%	1000V	X7S	-55°C ~ 125°C	1812 (4532 Metric)	0.177" x 0.126" (4.50mm x 3.20mm)	0.071" (1.80mm)	ROHS3 Compliant	1	1302 Pcs
VPDR102W103M1GV001E	Johanson Dielectrics Inc.	10000 pF	±20%	1000V	X7R	-55°C ~ 125°C	1812 (4532 Metric)	0.177" x 0.125" (4.50mm x 3.18mm)	0.110" (2.80mm)	ROHS3 Compliant	1	804 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring compatibility with standard manufacturing and assembly processes.

For direct replacement with identical tolerance (±20%): KGM43FR73A103MV, C1812C103MDRAC7800, and VPDR102W103M1GV001E are functionally equivalent to the 1812AC103MAT3A\SB. KGM43FR73A103MV offers the highest inventory availability from the same manufacturer (KYOCERA AVX). C1812C103MDRAC7800 provides significantly higher stock levels (12273 pieces) with reduced thickness (1.55mm) and low ESL characteristics.

For applications tolerating tighter tolerance (±10%): 1812AC103KAT1A, C1812C103KDRAC7800, and C4532X7R3A103K200KA provide improved capacitance accuracy. C4532X7R3A103K200KA offers the largest inventory (86839 pieces) with established supply chain availability.

For X7S temperature coefficient applications: C4532X7S3A103K160KA is suitable where X7S performance characteristics meet circuit requirements. This part maintains all other electrical and mechanical specifications while offering different temperature stability performance.

Physical dimensions vary slightly across manufacturers. KEMET parts (C1812C103KDRAC7800, C1812C103MDRAC7800) feature reduced thickness (1.55mm) compared to the original specification (2.20mm), which may provide design advantages in space-constrained layouts. Johanson Dielectrics Inc. VPDR102W103M1GV001E has increased thickness (2.80mm) and is specified for SMPS filtering applications.

Frequently Asked Questions (FAQ)

Q: Can KGM43FR73A103MV be used as a direct replacement for 1812AC103MAT3A\SB?

A: Yes. KGM43FR73A103MV is a direct equivalent with identical capacitance (10000 pF), tolerance (±20%), voltage rating (1000V), temperature coefficient (X7R), and package (1812/4532 metric). Both parts are KYOCERA AVX products with ROHS3 compliance and MSL 1 rating.

Q: What is the difference between the ±20% and ±10% tolerance parts?

A: Tolerance specifies the allowable deviation from the nominal 10000 pF capacitance value. ±20% tolerance allows deviation from 8000 pF to 12000 pF, while ±10% tolerance allows deviation from 9000 pF to 11000 pF. Applications requiring tighter capacitance accuracy should specify ±10% parts (1812AC103KAT1A, C1812C103KDRAC7800, C4532X7R3A103K200KA).

Q: Are there physical size differences between substitute parts?

A: Yes. The original 1812AC103MAT3A\SB measures 4.60mm x 3.20mm x 2.20mm (L x W x thickness). KEMET parts (C1812C103KDRAC7800, C1812C103MDRAC7800) measure 4.50mm x 3.20mm x 1.55mm with reduced thickness. Johanson Dielectrics Inc. VPDR102W103M1GV001E measures 4.50mm x 3.18mm x 2.80mm with increased thickness. Verify PCB layout compatibility before substitution.

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

A: Both X7R and X7S are temperature coefficient classifications for ceramic capacitors operating across -55°C to 125°C. X7R provides ±15% capacitance change over temperature, while X7S provides ±22% capacitance change. The original part specifies X7R. C4532X7S3A103K160KA uses X7S and is suitable only where circuit design accepts the broader temperature coefficient range.

Q: Which substitute part has the highest inventory availability?

A: C4532X7R3A103K200KA (TDK Corporation) has 86839 pieces in stock, providing the most reliable supply availability. This part offers ±10% tolerance with identical electrical specifications to the original part.

Q: Can VPDR102W103M1GV001E be used in all applications?

A: VPDR102W103M1GV001E is specified for SMPS filtering applications and has increased thickness (2.80mm) compared to the original part (2.20mm). Verify that the thicker profile does not conflict with PCB layout constraints and that SMPS filtering specification aligns with your application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity) rating, ensuring compatibility with standard manufacturing processes and environmental regulations.

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