1812SC102KAT1A Ceramic Capacitor Equivalent & Substitute Parts

Part Overview

The 1812SC102KAT1A is a 1000 pF, 1500V (1.5kV) 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 product status and is ROHS3 compliant. Substitute parts are identified when design requirements necessitate higher voltage ratings, improved tolerance specifications, or alternative manufacturer sourcing while maintaining core electrical and mechanical compatibility within the 1812 package footprint.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±10%
Voltage Rating	1500V (1.5kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 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 eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

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

Allowable Variation Parameters:

Voltage Rating: Equal to or greater than 1500V
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general purpose applications)
Tolerance: ±10% or tighter (±5%)
Manufacturer: KYOCERA AVX or KEMET

Substitute parts are grouped by voltage rating upgrade tier, enabling selection based on application margin requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Inventory
1812SC102KAT1A	KYOCERA AVX	1000 pF	±10%	1500V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	758 Pcs
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	2100 Pcs
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	1812 (4532 Metric)	0.110" (2.80mm)	2778 Pcs
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532 Metric)	0.087" (2.20mm)	2400 Pcs
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1812 Pcs
KGM43FR73U102KV	KYOCERA AVX	1000 pF	±10%	3000V	X7R	1812 (4532 Metric)	0.087" (2.21mm)	3091 Pcs
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	C0G, NP0	1812 (4532 Metric)	0.087" (2.21mm)	6987 Pcs
C1812C102KGRAC7800	KEMET	1000 pF	±10%	2000V	X7R	1812 (4532 Metric)	0.061" (1.55mm)	60226 Pcs
C1812C102KHRAC7800	KEMET	1000 pF	±10%	3000V	X7R	1812 (4532 Metric)	0.071" (1.80mm)	1390 Pcs

Engineering Selection Recommendations

KYOCERA AVX Standard Series (X7R, ±10% Tolerance):

1812GC102KAT1A (2000V): Direct upgrade with 33% voltage margin increase. Identical thickness to main part. Suitable for applications requiring enhanced overvoltage protection.
1812WC102KAT1A (2500V): 67% voltage margin increase. Increased thickness (2.80mm) requires PCB layout verification for clearance compatibility.
1812HC102KAT1A (3000V): 100% voltage margin increase. Increased thickness (2.20mm) requires PCB layout verification.

KYOCERA AVX KGM Series (High Voltage, X7R, ±10% Tolerance):

KGM43ER73D102KV (2000V): Alternative sourcing option with identical electrical and mechanical specifications to 1812GC102KAT1A. Lower inventory availability.
KGM43FR73U102KV (3000V): Alternative sourcing option with identical electrical specifications to 1812HC102KAT1A. Increased thickness (2.21mm).

KYOCERA AVX KGM Series (High Voltage, C0G/NP0, ±5% Tolerance):

KGM43FCG3D102JV (2000V): Tighter tolerance specification (±5%) with C0G/NP0 temperature coefficient. Suitable for precision frequency-dependent applications. Increased thickness (2.21mm).

KEMET SMD Comm Series (X7R, ±10% Tolerance):

C1812C102KGRAC7800 (2000V): Cross-manufacturer substitute with 33% voltage margin increase. Reduced thickness (1.55mm) provides improved PCB layout flexibility. Highest inventory availability (60226 Pcs).
C1812C102KHRAC7800 (3000V): Cross-manufacturer substitute with 100% voltage margin increase. Thickness (1.80mm) matches main part. Lower inventory availability.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and -55°C ~ 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating in place of the 1812SC102KAT1A?

A: Yes. All listed substitute parts maintain the same capacitance (1000 pF), tolerance (±10% or tighter), package (1812), and operating temperature range (-55°C ~ 125°C). Higher voltage ratings provide additional design margin without affecting circuit functionality.

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

A: X7R provides ±15% capacitance variation across the -55°C ~ 125°C operating range. C0G/NP0 provides ±30 ppm/°C, resulting in negligible capacitance drift. C0G/NP0 is specified for precision frequency-dependent applications; X7R is suitable for general purpose filtering and coupling applications.

Q: Does increased thickness affect PCB assembly compatibility?

A: Thickness variations must be evaluated against PCB design constraints. The main part (1812SC102KAT1A) has maximum thickness of 0.071" (1.80mm). Substitute parts range from 0.061" (1.55mm) to 0.110" (2.80mm). Verify clearance with PCB layout and reflow profile specifications before design implementation.

Q: Are KYOCERA AVX and KEMET parts electrically interchangeable?

A: Yes, within the specified parameter constraints. KEMET C1812C102KGRAC7800 and C1812C102KHRAC7800 maintain identical electrical specifications (capacitance, tolerance, voltage, temperature coefficient) and package dimensions to their KYOCERA AVX equivalents. Verify procurement and supply chain requirements for cross-manufacturer substitution.

Q: What inventory considerations apply to substitute part selection?

A: Inventory availability varies significantly. KEMET C1812C102KGRAC7800 has the highest availability (60226 Pcs). KYOCERA AVX standard series parts (1812GC102KAT1A, 1812WC102KAT1A, 1812HC102KAT1A) have moderate availability (2100–2778 Pcs). KGM series and KEMET 3000V parts have lower availability (1390–3091 Pcs). Procurement lead time and supply continuity should be evaluated for production planning.

Q: Is tolerance tighter than ±10% necessary for this application?

A: Tolerance selection depends on circuit requirements. KGM43FCG3D102JV offers ±5% tolerance for applications requiring precise capacitance values. Standard ±10% tolerance is acceptable for general purpose filtering, coupling, and decoupling applications.

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