1812SC102MAT1A Equivalent & Substitute Parts

Part Overview

The 1812SC102MAT1A is a 1000 pF ±20% 1500V (1.5kV) ceramic capacitor manufactured by KYOCERA AVX in X7R temperature coefficient, packaged in 1812 (4532 Metric) form factor. This high-voltage surface-mount 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 rating and is currently in active production status. Substitute parts are identified to address higher voltage requirements, improved tolerance specifications, or alternative packaging formats while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±20%
Voltage Rating	1500V (1.5kV)
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)
Maximum Thickness	0.071" (1.80mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Packaging Format	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for the 1812SC102MAT1A are classified based on the following allowed electrical and mechanical parameters:

Capacitance: All substitutes maintain 1000 pF nominal value.

Package / Case: All substitutes use 1812 (4532 Metric) form factor, ensuring mechanical compatibility with PCB footprints designed for the original part.

Mounting Type: All substitutes are surface-mount MLCC components.

Temperature Coefficient: Substitutes are available in X7R (primary group) or C0G/NP0 (alternative group) specifications.

Voltage Rating: Substitutes range from 2000V (2kV) to 3000V (3kV), providing higher voltage margins than the original 1500V rating.

Tolerance: Substitutes are available in ±10% or ±20% tolerance grades.

Compliance & Certifications: All substitutes maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status.

Manufacturer: Substitutes are sourced from KYOCERA AVX (primary) or KEMET (alternative).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Max Thickness	Packaging Format	RoHS Status
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V	X7R	1812 (4532)	0.071" (1.80mm)	Tape & Reel	ROHS3
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	Cut Tape & Digi-Reel	ROHS3
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	Tape & Reel	ROHS3
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532)	0.087" (2.20mm)	Tape & Reel	ROHS3
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	1812 (4532)	0.110" (2.80mm)	Tape & Reel	ROHS3
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	Tape & Reel	ROHS3
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	Tape & Reel	ROHS3
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	C0G, NP0	1812 (4532)	0.087" (2.21mm)	Tape & Reel	ROHS3
KGM43FR73U102KV	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532)	0.087" (2.21mm)	Tape & Reel	ROHS3
KGM43FR73U102MV	KYOCERA AVX	1000 pF	±20%	3000V	X7R	1812 (4532)	0.087" (2.21mm)	Tape & Reel	ROHS3
C1812C102KGRAC7800	KEMET	1000 pF	±10%	2000V	X7R	1812 (4532)	0.061" (1.55mm)	Cut Tape & Digi-Reel	ROHS3

Engineering Selection Recommendations

Direct Replacement (Same Voltage, Improved Tolerance): 1812GC102MAT1A maintains the original 1500V equivalent performance at 2000V rating with identical ±20% tolerance and Tape & Reel packaging. This part provides a direct upgrade path with higher voltage margin and identical mechanical footprint.

Higher Voltage Substitutes (2000V Rating): 1812GC102KAT1A, KGM43ER73D102KV, and C1812C102KGRAC7800 provide 2000V rating with ±10% tolerance improvement. The KYOCERA AVX KGM43ER73D102KV maintains the same 0.071" thickness as the original. The KEMET C1812C102KGRAC7800 offers the lowest profile at 0.061" thickness with low ESL characteristics.

Maximum Voltage Substitutes (3000V Rating): 1812HC102KAT1A and KGM43FR73U102KV deliver 3000V rating with ±10% tolerance. These parts increase thickness to 0.087" (2.20-2.21mm) due to higher voltage requirements. KGM43FR73U102MV provides the same 3000V rating with ±20% tolerance matching the original specification.

Specialized Application (C0G/NP0 Temperature Coefficient): KGM43FCG3D102JV offers C0G/NP0 temperature coefficient with ±5% tolerance and 2000V rating for applications requiring superior temperature stability and tighter capacitance tolerance. Thickness increases to 0.087" (2.21mm).

Compliance & Production Status: All substitute parts maintain active production status, ROHS3 compliance, MSL 1 rating, and REACH unaffected designation. All parts are suitable for immediate component selection without additional qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can 1812GC102MAT1A be used as a direct replacement for 1812SC102MAT1A? A: Yes. Both parts share identical capacitance (1000 pF), tolerance (±20%), temperature coefficient (X7R), package (1812), and operating temperature range (-55°C to 125°C). The 1812GC102MAT1A provides higher voltage rating (2000V vs. 1500V) with the same physical footprint and thickness (0.071"), 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 -55°C to 125°C operating range, suitable for general-purpose applications. C0G/NP0 provides superior stability with minimal capacitance change across temperature, required for precision timing and filtering circuits. KGM43FCG3D102JV offers C0G/NP0 performance with ±5% tolerance.

Q: Does increased thickness affect PCB assembly? A: Thickness variations (0.071" to 0.110") do not affect PCB footprint compatibility, as all parts use the same 1812 (4532 Metric) package. However, higher voltage ratings (2500V and 3000V) require thicker dielectric layers, resulting in increased component height. Verify PCB clearance for components exceeding 0.087" thickness.

Q: Are KEMET and KYOCERA AVX parts interchangeable? A: Yes, within the specified electrical and mechanical parameters. C1812C102KGRAC7800 (KEMET) and equivalent KYOCERA AVX parts (1812GC102KAT1A, KGM43ER73D102KV) share identical capacitance, voltage, tolerance, and package specifications. The KEMET part offers lower profile (0.061" vs. 0.071") with low ESL characteristics.

Q: What packaging format should be selected for high-volume production? A: Tape & Reel (TR) format is standard for automated assembly lines. Cut Tape (CT) & Digi-Reel format (1812GC102KAT1A, C1812C102KGRAC7800) is suitable for lower-volume or mixed-component orders. Both formats maintain identical electrical performance and compliance certifications.

Q: Can parts with ±10% tolerance replace ±20% tolerance specifications? A: Yes. Parts with tighter tolerance (±10%) are functionally compatible with ±20% specifications, as they represent a subset of the allowed capacitance range. However, reverse substitution (±20% replacing ±10%) is not recommended for applications requiring tighter tolerance control.

Q: What voltage rating should be selected for safety margin? A: The original 1500V rating provides adequate margin for 1500V maximum circuit voltage. For enhanced reliability, 2000V-rated parts (1812GC102KAT1A, KGM43ER73D102KV) provide 33% voltage margin. For critical applications, 3000V-rated parts (1812HC102KAT1A, KGM43FR73U102KV) provide 100% voltage margin.

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