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 based on matching capacitance, package size, and operating temperature range while allowing variations in voltage rating, tolerance, and temperature coefficient to meet specific circuit requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	1812AC102MAT3A
Manufacturer	KYOCERA AVX
Capacitance	1000 pF
Tolerance	±20%
Voltage - Rated	1000V (1kV)
Temperature Coefficient	X7R
Operating Temperature	-55°C ~ 125°C
Package / Case	1812 (4532 Metric)
Size / Dimension	0.181" L x 0.126" W (4.60mm x 3.20mm)
Thickness (Max)	0.071" (1.80mm)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution logic for 1812AC102MAT3A is based on the following criteria:

Fixed Parameters (Must Match):

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

Variable Parameters (Allowed to Differ):

Voltage Rating: 1000V, 1500V, 2000V, 2500V, 3000V
Tolerance: ±5%, ±10%, ±20%
Temperature Coefficient: X7R, C0G/NP0
Thickness: 0.071" (1.80mm), 0.087" (2.20mm), 0.110" (2.80mm)
Packaging: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®

Substitute parts maintain identical capacitance and package footprint while offering enhanced voltage ratings, improved tolerance specifications, or alternative temperature coefficients to accommodate different circuit design requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Thickness (Max)	Packaging	Inventory
1812AC102MAT3A	KYOCERA AVX	1000 pF	±20%	1000V	X7R	0.071" (1.80mm)	-	786 Pcs
1812AA102MAT1A	KYOCERA AVX	1000 pF	±20%	1000V	C0G, NP0	0.087" (2.20mm)	Tape & Reel (TR)	4242 Pcs
1812AC102KAT1A	KYOCERA AVX	1000 pF	±10%	1000V	X7R	0.071" (1.80mm)	Tape & Reel (TR)	1655 Pcs
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	0.071" (1.80mm)	Cut Tape (CT) & Digi-Reel®	2100 Pcs
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V	X7R	0.071" (1.80mm)	Tape & Reel (TR)	14533 Pcs
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	0.087" (2.20mm)	Tape & Reel (TR)	2400 Pcs
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V	X7R	0.071" (1.80mm)	Tape & Reel (TR)	1080 Pcs
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	0.110" (2.80mm)	Tape & Reel (TR)	2778 Pcs
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	0.071" (1.80mm)	Tape & Reel (TR)	1812 Pcs
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V	X7R	0.071" (1.80mm)	Tape & Reel (TR)	6649 Pcs
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	C0G, NP0	0.087" (2.21mm)	Tape & Reel (TR)	6987 Pcs

Engineering Selection Recommendations

All substitute parts listed 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:

For 1000V applications with ±20% tolerance: 1812AC102MAT1A (direct equivalent with improved packaging availability).

For 1000V applications requiring tighter tolerance: 1812AC102KAT1A provides ±10% tolerance while maintaining identical voltage rating and thickness.

For applications requiring higher voltage margins: 1812GC102MAT1A (2000V, ±20%) or 1812SC102MAT1A (1500V, ±20%) offer increased voltage headroom with matching tolerance.

For high-voltage applications with tighter tolerance: 1812GC102KAT1A (2000V, ±10%) or KGM43ER73D102KV (2000V, ±10%) provide enhanced specifications.

For applications requiring superior voltage stability: 1812AA102MAT1A or KGM43FCG3D102JV offer C0G/NP0 temperature coefficient with reduced capacitance drift across temperature range.

For space-constrained designs: Parts with 0.071" (1.80mm) maximum thickness (1812AC102MAT3A, 1812AC102KAT1A, 1812GC102KAT1A, 1812GC102MAT1A, 1812SC102MAT1A, KGM43ER73D102KV, KGM43ER73D102MV) maintain original profile.

Frequently Asked Questions (FAQ)

Q: Can 1812AC102MAT3A be replaced with 1812AA102MAT1A? A: Yes. Both parts share identical capacitance (1000 pF), voltage rating (1000V), tolerance (±20%), and operating temperature range (-55°C ~ 125°C). The primary difference is temperature coefficient: 1812AA102MAT1A uses C0G/NP0 instead of X7R, resulting in superior capacitance stability across temperature. Thickness increases from 0.071" to 0.087", which may affect PCB layout in space-constrained designs.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance change across -55°C to 125°C operating range. C0G/NP0 provides ±30 ppm/°C, resulting in minimal capacitance drift. C0G/NP0 is preferred for precision timing circuits and frequency-dependent applications; X7R is suitable for general-purpose filtering and coupling applications.

Q: Can I use a higher voltage-rated part as a substitute? A: Yes. Higher voltage ratings (1500V, 2000V, 2500V, 3000V) are direct substitutes for 1000V applications. The circuit will operate safely with increased voltage margin. However, higher voltage ratings may increase thickness and cost. Verify PCB layout compatibility before substitution.

Q: What is the significance of tolerance differences (±5%, ±10%, ±20%)? A: Tolerance defines the acceptable capacitance deviation from nominal value. ±20% allows ±200 pF deviation from 1000 pF nominal. ±10% allows ±100 pF deviation. ±5% allows ±50 pF deviation. Tighter tolerance is required for precision circuits; general-purpose applications tolerate ±20%.

Q: Are KGM43 series parts compatible with standard 1812 footprints? A: Yes. KGM43ER73D102KV and KGM43ER73D102MV maintain identical 1812 (4532 Metric) package dimensions and footprint. KGM43FCG3D102JV also uses 1812 package. All are direct PCB footprint substitutes.

Q: What packaging options are available? A: Tape & Reel (TR) is standard for high-volume production. Cut Tape (CT) & Digi-Reel® is available for 1812GC102KAT1A. Verify packaging compatibility with assembly equipment before ordering.

Q: Does moisture sensitivity affect storage or handling? A: All listed parts have MSL 1 (Unlimited), indicating no moisture sensitivity. Standard storage at room temperature and normal humidity requires no special precautions. No baking or dry-pack storage is required.

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