1812CC102MAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812CC102MAT1A is a 1000 pF ±20% 630V X7R ceramic capacitor in 1812 (4532 Metric) surface mount package manufactured by KYOCERA AVX. This high-voltage multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and is currently in active production status with 885 pieces in stock.

Substitute parts are necessary when design requirements change, such as increased voltage margin requirements, tighter tolerance specifications, or when the primary part becomes unavailable. The substitute parts listed maintain identical capacitance values and package dimensions while offering upgraded voltage ratings or improved tolerance specifications.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±20%
Voltage Rating	630V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.181" L × 0.126" W (4.60mm × 3.20mm)
Thickness	0.071" (1.80mm)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 1812CC102MAT1A is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 1000 pF (exact match required)
Package / Case: 1812 (4532 Metric) (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)
Temperature Coefficient: X7R (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)

Allowable Variation Parameters:

Voltage Rating: May be equal to or greater than 630V
Tolerance: May be ±10% (tighter) or ±20% (same)
Thickness: May vary based on voltage rating requirements

The substitute parts are grouped into two categories: direct upgrades with higher voltage ratings (1000V, 1500V, 2000V, 2500V, 3000V) and equivalent parts with matching or improved tolerance specifications. All substitute parts maintain the same footprint and thermal characteristics as the primary part.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Thickness	Inventory Status
1812CC102MAT1A	KYOCERA AVX	1000 pF	±20%	630V	0.071" (1.80mm)	885 Pcs
1812AC102KAT1A	KYOCERA AVX	1000 pF	±10%	1000V	0.071" (1.80mm)	1655 Pcs
1812AC102MAT1A	KYOCERA AVX	1000 pF	±20%	1000V	0.071" (1.80mm)	1103 Pcs
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V	0.071" (1.80mm)	1080 Pcs
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	0.071" (1.80mm)	2100 Pcs
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V	0.071" (1.80mm)	14533 Pcs
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	0.110" (2.80mm)	2778 Pcs
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	0.087" (2.20mm)	2400 Pcs
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	0.071" (1.80mm)	1812 Pcs
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V	0.071" (1.80mm)	6649 Pcs
KGM43FR73U102KV	KYOCERA AVX	1000 pF	±10%	3000V	0.087" (2.21mm)	3091 Pcs

Engineering Selection Recommendations

All listed substitute parts are manufactured by KYOCERA AVX and maintain active production status. Selection should be based on the following engineering criteria:

For Direct Replacement (Same Voltage Rating): No direct equivalent exists at 630V. The lowest voltage upgrade available is 1000V (1812AC102KAT1A or 1812AC102MAT1A), which provides increased design margin.

For Tolerance Upgrade: Parts with ±10% tolerance (1812AC102KAT1A, 1812GC102KAT1A, 1812HC102KAT1A, KGM43ER73D102KV, KGM43FR73U102KV) are suitable when tighter capacitance control is required.

For Voltage Margin Enhancement:

1000V rating: 1812AC102KAT1A (±10%) or 1812AC102MAT1A (±20%)
1500V rating: 1812SC102MAT1A (±20%)
2000V rating: 1812GC102KAT1A (±10%), 1812GC102MAT1A (±20%), KGM43ER73D102KV (±10%), or KGM43ER73D102MV (±20%)
2500V rating: 1812WC102KAT1A (±10%)
3000V rating: 1812HC102KAT1A (±10%) or KGM43FR73U102KV (±10%)

Compliance Considerations: All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating. All parts are classified under ECCN EAR99 and HTSUS 8532.24.0020.

Physical Fit Verification: Parts rated 2500V (1812WC102KAT1A) and 3000V (1812HC102KAT1A, KGM43FR73U102KV) have increased thickness. Verify PCB layout clearance before selection if space constraints exist.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute? A: Yes. All substitute parts with voltage ratings of 1000V or higher are electrically compatible with the 1812CC102MAT1A. Higher voltage ratings provide increased design margin and do not negatively impact circuit performance when the original 630V specification is not a limiting factor.

Q: What is the difference between ±10% and ±20% tolerance parts? A: Tolerance specifies the allowable deviation from the nominal 1000 pF capacitance value. ±10% tolerance parts (900-1100 pF) provide tighter capacitance control compared to ±20% tolerance parts (800-1200 pF). Select ±10% parts when circuit performance depends on precise capacitance values.

Q: Will the thicker 2500V and 3000V parts fit my PCB layout? A: The 1812WC102KAT1A has a maximum thickness of 0.110" (2.80mm) and the 1812HC102KAT1A and KGM43FR73U102KV have a maximum thickness of 0.087" (2.20mm), compared to 0.071" (1.80mm) for the original part. Verify available vertical clearance on your PCB before substitution.

Q: Are all substitute parts in the same 1812 package? A: Yes. All substitute parts use the 1812 (4532 Metric) surface mount package with identical length (0.181" / 4.60mm) and width (0.126" / 3.20mm) dimensions. Thickness varies based on voltage rating.

Q: What is the difference between standard KYOCERA AVX parts and KGM series parts? A: KGM series parts (KGM43ER73D102KV, KGM43ER73D102MV, KGM43FR73U102KV) are part of the KGM - HV (High Voltage) product line. They provide equivalent electrical performance to standard KYOCERA AVX parts with the same capacitance, voltage, and tolerance specifications.

Q: Which substitute part has the highest inventory availability? A: The 1812GC102MAT1A (2000V, ±20%) has the highest inventory with 14,533 pieces in stock, followed by KGM43ER73D102MV (2000V, ±20%) with 6,649 pieces.

Q: Can I mix different substitute parts in the same circuit? A: Yes, provided all parts meet the circuit's voltage and capacitance requirements. However, using parts with different tolerance specifications (±10% vs ±20%) in the same circuit may result in uneven capacitance distribution. Consistency is recommended for critical applications.

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