1812AC102MAT1A Equivalent & Substitute Parts

Part Overview

The 1812AC102MAT1A is a 1000 pF, 1000V (1kV) ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient, housed in a 1812 (4532 Metric) surface mount package. This component is classified as Active and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges for high-voltage general-purpose applications.

Key Parameters

Parameter	Value
Capacitance	1000 pF
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 1812AC102MAT1A is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

Capacitance: 1000 pF (fixed)
Voltage Rating: Equal to or greater than 1000V
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general-purpose applications)
Operating Temperature Range: -55°C to 125°C minimum

Mechanical Parameters (Must Match):

Package / Case: 1812 (4532 Metric)
Mounting Type: Surface Mount, MLCC
Physical dimensions: 0.181" L x 0.126" W (4.60mm x 3.20mm)

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped by voltage rating (1000V, 1500V, 2000V, 2500V, 3000V) and tolerance (±20%, ±10%, ±5%). Parts with higher voltage ratings or tighter tolerances are direct upgrades. Temperature coefficient variants (X7R vs. C0G/NP0) are interchangeable for general-purpose applications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Inventory	Product Status
1812AC102MAT1A	KYOCERA AVX	1000 pF	±20%	1000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	740 Pcs	Active
1812AA102MAT1A	KYOCERA AVX	1000 pF	±20%	1000V	C0G, NP0	1812 (4532 Metric)	0.087" (2.20mm)	4242 Pcs	Active
1812AC102KAT1A	KYOCERA AVX	1000 pF	±10%	1000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1655 Pcs	Active
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1080 Pcs	Active
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	2100 Pcs	Active
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	14533 Pcs	Active
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	1812 (4532 Metric)	0.110" (2.80mm)	2778 Pcs	Active
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532 Metric)	0.087" (2.20mm)	2400 Pcs	Active
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1812 Pcs	Active
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	6649 Pcs	Active
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	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 substitute parts depends on application voltage requirements and tolerance specifications:

Same Voltage (1000V) Substitutes:

1812AC102KAT1A: Direct substitute with tighter ±10% tolerance and identical X7R characteristics
1812AA102MAT1A: Direct substitute with C0G/NP0 temperature coefficient for applications requiring superior temperature stability

Higher Voltage Substitutes (Upgrade Path):

1812SC102MAT1A (1500V): Provides 50% voltage margin with identical tolerance and X7R characteristics
1812GC102MAT1A (2000V): Provides 100% voltage margin with ±20% tolerance and X7R characteristics
1812GC102KAT1A (2000V): Provides 100% voltage margin with tighter ±10% tolerance and X7R characteristics
1812WC102KAT1A (2500V): Provides 150% voltage margin with ±10% tolerance; note increased thickness (0.110")
1812HC102KAT1A (3000V): Provides 200% voltage margin with ±10% tolerance and increased thickness (0.087")

KGM Series (High-Voltage Optimized):

KGM43ER73D102KV and KGM43ER73D102MV: Alternative manufacturer series with 2000V rating; KGM43FCG3D102JV offers ±5% tolerance with C0G/NP0 characteristics

Frequently Asked Questions (FAQ)

Q: Can 1812AC102KAT1A replace 1812AC102MAT1A directly? A: Yes. Both parts share identical capacitance (1000 pF), voltage rating (1000V), temperature coefficient (X7R), and package (1812). The 1812AC102KAT1A offers tighter tolerance (±10% vs. ±20%), making it a direct upgrade.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance change across the operating temperature range (-55°C to 125°C). C0G/NP0 provides superior stability with minimal capacitance change. Both are acceptable for general-purpose applications; C0G/NP0 is preferred for precision circuits.

Q: Can I use a 2000V-rated part in place of a 1000V-rated part? A: Yes. Higher voltage ratings are direct upgrades. The 1812GC102MAT1A (2000V) or 1812GC102KAT1A (2000V) can replace the 1812AC102MAT1A (1000V) without functional impact. Verify PCB layout compatibility, as some higher-voltage variants have increased thickness.

Q: Are there packaging differences between substitute parts? A: All listed parts use the 1812 (4532 Metric) surface mount package with identical footprint dimensions (0.181" L x 0.126" W). Thickness varies: standard parts are 0.071" (1.80mm); some variants reach 0.087" (2.20mm) or 0.110" (2.80mm). Verify PCB clearance for higher-voltage parts.

Q: What is the difference between KYOCERA AVX standard and KGM series parts? A: KGM series parts are optimized for high-voltage applications with enhanced dielectric materials. Both series are ROHS3 compliant and Active. KGM parts offer alternative sourcing and may provide better availability for 2000V+ applications.

Q: Is MSL (Moisture Sensitivity Level) 1 the same across all substitutes? A: Yes. All listed parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard storage and handling procedures apply.

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