1812SC102MAT1A Ceramic Capacitor Equivalent & Substitute Parts

Part Overview

The 1812SC102MAT1A is a 1000 pF ±20% 1500V (1.5kV) ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient and 1812 (4532 Metric) package 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 currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are necessary when higher voltage ratings, improved tolerance specifications, or alternative temperature coefficient characteristics are required for circuit redesign, performance optimization, or supply chain availability.

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)

Substitute Part Grouping Explanation

Substitution of the 1812SC102MAT1A is determined by the following critical parameters: capacitance value (1000 pF), package form factor (1812/4532 Metric), mounting type (surface mount), and operating temperature range (-55°C to 125°C). All substitute parts maintain these core specifications.

Substitute parts are grouped into three categories based on voltage rating and tolerance:

Voltage Rating Upgrades (2000V / 2.5kV / 3000V): Parts with higher voltage ratings than the original 1500V specification provide enhanced electrical stress margin and are direct functional upgrades. These include 1812GC102KAT1A (2000V, ±10%), 1812GC102MAT1A (2000V, ±20%), 1812WC102KAT1A (2500V, ±10%), 1812HC102KAT1A (3000V, ±10%), KGM43ER73D102KV (2000V, ±10%), KGM43ER73D102MV (2000V, ±20%), KGM43FR73U102KV (3000V, ±10%), and KGM43FR73U102MV (3000V, ±20%).

Temperature Coefficient Variant (C0G/NP0): The KGM43FCG3D102JV provides tighter tolerance (±5%) and C0G/NP0 temperature coefficient at 2000V rating, suitable for applications requiring superior temperature stability and precision.

Parametric Equivalent: The 1812SC102MAT1A listed as parametric equivalent maintains identical electrical specifications (1000 pF, ±20%, 1500V, X7R) with alternative packaging (Tape & Reel vs. standard packaging).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Max Thickness	RoHS Status	Inventory Status
1812SC102MAT1A	KYOCERA AVX	1000 pF	±20%	1500V	X7R	1812 (4532)	0.071" (1.80mm)	ROHS3	667 Pcs
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	ROHS3	2100 Pcs
1812GC102MAT1A	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	ROHS3	14533 Pcs
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	1812 (4532)	0.110" (2.80mm)	ROHS3	2778 Pcs
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	2400 Pcs
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	ROHS3	1812 Pcs
KGM43ER73D102MV	KYOCERA AVX	1000 pF	±20%	2000V	X7R	1812 (4532)	0.071" (1.80mm)	ROHS3	6649 Pcs
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	C0G/NP0	1812 (4532)	0.087" (2.21mm)	ROHS3	6987 Pcs
KGM43FR73U102KV	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532)	0.087" (2.21mm)	ROHS3	3091 Pcs
KGM43FR73U102MV	KYOCERA AVX	1000 pF	±20%	3000V	X7R	1812 (4532)	0.087" (2.21mm)	ROHS3	1476 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original 1812SC102MAT1A specification. Selection between substitute options depends on circuit voltage requirements and tolerance specifications.

For applications requiring voltage margin above 1500V, the 1812GC102MAT1A (2000V, ±20%) offers the highest inventory availability (14533 Pcs) while maintaining identical tolerance and X7R temperature coefficient. This part is suitable for direct substitution when higher voltage stress margin is acceptable.

For applications requiring both voltage upgrade and improved tolerance, the 1812GC102KAT1A (2000V, ±10%) or KGM43ER73D102KV (2000V, ±10%) provide ±10% tolerance with 2000V rating. The KGM43ER73D102KV belongs to the KGM - HV series, indicating specialized high-voltage design.

For maximum voltage rating within the 1812 package, the KGM43FR73U102KV (3000V, ±10%) or 1812HC102KAT1A (3000V, ±10%) provide 3000V rating. The KGM43FR73U102KV is part of the KGM - HV series with 3091 Pcs inventory.

For precision applications requiring superior temperature stability, the KGM43FCG3D102JV provides C0G/NP0 temperature coefficient with ±5% tolerance at 2000V rating, with 6987 Pcs inventory availability.

Physical dimensions remain consistent across all substitutes (0.181" L × 0.126" W), though maximum thickness varies: 0.071" (1.80mm) for 1500V and 2000V ratings, 0.087" (2.20-2.21mm) for 2500V and 3000V ratings, and 0.110" (2.80mm) for the 2500V variant. PCB layout and assembly clearance must accommodate these thickness variations.

Frequently Asked Questions (FAQ)

Q: Can 1812GC102MAT1A directly replace 1812SC102MAT1A in my circuit?

A: Yes. Both parts share identical capacitance (1000 pF), tolerance (±20%), temperature coefficient (X7R), package (1812/4532 Metric), and operating temperature range (-55°C to 125°C). The 1812GC102MAT1A provides higher voltage rating (2000V vs. 1500V), making it a functional upgrade. Physical dimensions are identical, and both are ROHS3 compliant.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients?

A: X7R temperature coefficient maintains capacitance within ±15% across the -55°C to 125°C operating range. C0G/NP0 provides superior temperature stability with minimal capacitance variation across temperature. The KGM43FCG3D102JV with C0G/NP0 is suitable for precision circuits where temperature-induced capacitance drift must be minimized.

Q: Will the thicker 3000V parts fit my PCB assembly?

A: The 3000V rated parts (1812HC102KAT1A, KGM43FR73U102KV, KGM43FR73U102MV) have maximum thickness of 0.087" (2.20-2.21mm) compared to 0.071" (1.80mm) for 1500V and 2000V parts. The 2500V variant (1812WC102KAT1A) reaches 0.110" (2.80mm). Verify PCB assembly clearance and solder reflow profile compatibility before substitution.

Q: Which substitute offers the best inventory availability?

A: The 1812GC102MAT1A provides the highest inventory with 14533 Pcs in stock, followed by KGM43FCG3D102JV (6987 Pcs) and KGM43ER73D102MV (6649 Pcs). These options ensure supply chain continuity for high-volume production.

Q: Are all substitutes suitable for high-voltage applications?

A: All listed substitutes maintain the high-voltage feature designation and are rated for 1500V or higher. The original 1812SC102MAT1A is rated 1500V. Substitutes with 2000V, 2500V, or 3000V ratings provide enhanced voltage margin. Select based on your circuit's maximum operating voltage requirement.

Q: What is the difference between standard 1812 parts and KGM43 series parts?

A: Both are manufactured by KYOCERA AVX in 1812 (4532 Metric) package. The KGM43 series is designated as KGM - HV (high-voltage specialized series). Electrical specifications are equivalent; selection depends on availability, packaging format (Tape & Reel), and series preference for design documentation.

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