1812AC102MAT3A Equivalent & Substitute Parts

Part Overview

The 1812AC102MAT3A is a 1000 pF ceramic capacitor rated at 1000V (1kV) with X7R temperature coefficient, manufactured by KYOCERA AVX in 1812 (4532 Metric) surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the 1812 package family, with variations in voltage rating, tolerance, and temperature coefficient specifications.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±20%
Voltage Rating	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	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Factors:

Capacitance value: 1000 pF (fixed across all substitutes)
Package / Case: 1812 (4532 Metric) (fixed across all substitutes)
Mounting Type: Surface Mount, MLCC (fixed across all substitutes)
Operating Temperature Range: -55°C ~ 125°C (fixed across all substitutes)
RoHS Status: ROHS3 Compliant (fixed across all substitutes)
Moisture Sensitivity Level: 1 (Unlimited) (fixed across all substitutes)

Variable Parameters Defining Substitution Groups:

Voltage Rating: 1000V, 1500V, 2000V, 2500V, 3000V
Tolerance: ±20%, ±10%, ±5%
Temperature Coefficient: X7R, C0G/NP0
Packaging Format: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®

All substitute parts maintain identical capacitance, package dimensions, and thermal operating range. Substitution is valid when voltage rating meets or exceeds circuit requirements, tolerance specifications are acceptable for the application, and temperature coefficient performance aligns with circuit design parameters.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Inventory	Product Status
1812AC102MAT3A	KYOCERA AVX	1000 pF	±20%	1000V (1kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1026 Pcs	Active
1812AA102MAT1A	KYOCERA AVX	1000 pF	±20%	1000V (1kV)	C0G, NP0	1812 (4532 Metric)	0.087" (2.20mm)	4242 Pcs	Active
1812AC102KAT1A	KYOCERA AVX	1000 pF	±10%	1000V (1kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1655 Pcs	Active
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V (2kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	2100 Pcs	Active
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V (2kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	14533 Pcs	Active
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V (3kV)	X7R	1812 (4532 Metric)	0.087" (2.20mm)	2400 Pcs	Active
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V (1.5kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1080 Pcs	Active
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V (2.5kV)	X7R	1812 (4532 Metric)	0.110" (2.80mm)	2778 Pcs	Active
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V (2kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1812 Pcs	Active
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V (2kV)	X7R	1812 (4532 Metric)	0.071" (1.80mm)	6649 Pcs	Active
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V (2kV)	C0G, NP0	1812 (4532 Metric)	0.087" (2.21mm)	6987 Pcs	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. Selection between substitutes depends on circuit voltage requirements and tolerance specifications:

Same Voltage Rating (1000V): 1812AC102KAT1A provides tighter ±10% tolerance with identical X7R performance. 1812AA102MAT1A offers C0G/NP0 temperature coefficient for applications requiring superior temperature stability.

Higher Voltage Ratings: 1812SC102MAT1A (1500V), 1812GC102KAT1A or 1812GC102MAT1A (2000V), 1812WC102KAT1A (2500V), and 1812HC102KAT1A (3000V) are suitable for circuits with elevated voltage stress. KGM43ER73D102KV and KGM43ER73D102MV represent alternative 2000V options from the KGM series.

Tolerance Considerations: Parts with ±10% tolerance (1812AC102KAT1A, 1812GC102KAT1A, 1812HC102KAT1A, 1812WC102KAT1A, KGM43ER73D102KV, KGM43FCG3D102JV) provide improved capacitance accuracy. KGM43FCG3D102JV offers ±5% tolerance with C0G/NP0 coefficient for precision applications.

Physical Dimensions: Most substitutes maintain 0.071" (1.80mm) thickness. Parts with increased thickness (1812AA102MAT1A, 1812HC102KAT1A at 0.087", 1812WC102KAT1A at 0.110", KGM43FCG3D102JV at 0.087") require PCB layout verification for clearance compatibility.

Frequently Asked Questions (FAQ)

Q: Can 1812AC102MAT3A be replaced with 1812AC102KAT1A? A: Yes. Both parts share identical capacitance (1000 pF), voltage rating (1000V), temperature coefficient (X7R), and package (1812). The substitute offers improved ±10% tolerance versus ±20%, with no dimensional conflicts.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance variation across -55°C to 125°C operating range. C0G/NP0 delivers superior stability with ±0.3% per °C maximum drift, suitable for precision timing and filtering circuits. Both maintain -55°C to 125°C operating range.

Q: Can a 2000V rated part substitute for the 1000V 1812AC102MAT3A? A: Yes, when circuit design permits. Higher voltage ratings (1812GC102KAT1A, 1812GC102MAT1A, KGM43ER73D102KV, KGM43ER73D102MV) provide voltage margin and identical capacitance. Verify PCB layout accommodates increased thickness if applicable.

Q: What packaging formats are available? A: 1812AC102MAT3A uses standard Tape & Reel (TR) format. 1812GC102KAT1A is supplied in Cut Tape (CT) & Digi-Reel® format. All other substitutes use Tape & Reel (TR). Confirm procurement and assembly equipment compatibility with packaging format.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the original part's regulatory and environmental specifications.

Q: How does tolerance affect circuit performance? A: ±20% tolerance (1812AC102MAT3A, 1812GC102MAT1A, KGM43ER73D102MV) permits ±200 pF capacitance variation. ±10% tolerance parts allow ±100 pF variation. ±5% tolerance (KGM43FCG3D102JV) restricts variation to ±50 pF. Select based on circuit sensitivity to capacitance drift and filtering requirements.

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