1812SC102KAT3A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812SC102KAT3A is a 1000 pF, 1500V (1.5kV) ceramic capacitor manufactured by KYOCERA AVX with X7R temperature coefficient, designed for high-voltage general-purpose applications. The part is active and in stock with 928 units available. Substitute parts are necessary when higher voltage ratings are required, alternative temperature coefficients are specified, or when sourcing from alternative manufacturers becomes advantageous for supply chain continuity.

Key Parameters

Parameter	Value
Capacitance	1000 pF
Tolerance	±10%
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
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)
Tolerance: ±10% or tighter (±5% acceptable)
Package / Case: 1812 (4532 Metric) (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)
Operating Temperature Range: -55°C to 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: May be equal to or higher than 1500V
Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general-purpose applications)
Manufacturer: KYOCERA AVX or KEMET (both qualified manufacturers)

All substitute parts listed maintain identical capacitance, tolerance, package dimensions, and environmental specifications while offering enhanced voltage ratings or alternative temperature coefficients.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Thickness (Max)	Inventory
1812SC102KAT3A	KYOCERA AVX	1000 pF	±10%	1500V	X7R	0.071" (1.80mm)	928 Pcs
1812GC102KAT1A	KYOCERA AVX	1000 pF	±10%	2000V	X7R	0.071" (1.80mm)	2100 Pcs
1812HC102KAT1A	KYOCERA AVX	1000 pF	±10%	3000V	X7R	0.087" (2.20mm)	2400 Pcs
1812WC102KAT1A	KYOCERA AVX	1000 pF	±10%	2500V	X7R	0.110" (2.80mm)	2778 Pcs
KGM43ER73D102KV	KYOCERA AVX	1000 pF	±10%	2000V	X7R	0.071" (1.80mm)	1812 Pcs
KGM43FCG3D102JV	KYOCERA AVX	1000 pF	±5%	2000V	C0G, NP0	0.087" (2.21mm)	6987 Pcs
KGM43FR73U102KV	KYOCERA AVX	1000 pF	±10%	3000V	X7R	0.087" (2.21mm)	3091 Pcs
C1812C102KGRAC7800	KEMET	1000 pF	±10%	2000V	X7R	0.061" (1.55mm)	60226 Pcs
C1812C102KHRAC7800	KEMET	1000 pF	±10%	3000V	X7R	0.071" (1.80mm)	1390 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating): No direct equivalent exists at 1500V. The 1812SC102KAT3A is a specialized voltage rating within the KYOCERA AVX product line.

For Voltage Upgrade Applications:

2000V Requirement: Select 1812GC102KAT1A, KGM43ER73D102KV, or C1812C102KGRAC7800. The KEMET C1812C102KGRAC7800 offers the lowest profile (0.061" thickness) and highest inventory availability (60226 units).
2500V Requirement: Select 1812WC102KAT1A. Note increased thickness of 0.110" (2.80mm) requires PCB layout verification.
3000V Requirement: Select 1812HC102KAT1A, KGM43FR73U102KV, or C1812C102KHRAC7800. All three are ROHS3 compliant and MSL 1 rated.

For Tighter Tolerance Applications: KGM43FCG3D102JV provides ±5% tolerance with C0G/NP0 temperature coefficient at 2000V, suitable for precision circuits requiring superior temperature stability.

For Supply Chain Continuity: KEMET C1812C102KGRAC7800 and C1812C102KHRAC7800 provide alternative sourcing with high inventory levels and identical electrical specifications to KYOCERA AVX equivalents.

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

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute? A: Yes. A capacitor rated for higher voltage than the original specification is electrically compatible. The 1812SC102KAT3A (1500V) can be replaced with any 2000V, 2500V, or 3000V rated substitute listed, provided all other parameters match exactly.

Q: What is the impact of increased thickness on PCB layout? A: Thickness variation affects component height and clearance. The 1812SC102KAT3A has maximum thickness of 0.071" (1.80mm). Substitutes range from 0.061" to 0.110". Verify PCB routing, solder reflow profiles, and mechanical clearances before selecting thicker alternatives like 1812WC102KAT1A (0.110").

Q: Are KYOCERA AVX and KEMET parts interchangeable? A: Yes, within the specified parameters. Both manufacturers produce 1812 package ceramics with identical electrical ratings and environmental compliance. KEMET C1812C102KGRAC7800 and C1812C102KHRAC7800 are direct functional equivalents to KYOCERA AVX parts at matching voltage ratings.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients? A: X7R provides ±15% capacitance change across -55°C to 125°C. C0G/NP0 provides ±30 ppm/°C (approximately ±0.3% across the temperature range). For general-purpose applications, both are acceptable. C0G/NP0 is preferred for precision timing and filtering circuits.

Q: Does tolerance affect substitution eligibility? A: Yes. The original part specifies ±10% tolerance. Substitutes with ±5% tolerance (KGM43FCG3D102JV) are acceptable as tighter tolerance is a performance upgrade. Substitutes with looser tolerance are not acceptable.

Q: Are all listed substitutes in active production? A: Yes. All substitute parts listed have Active product status and are in current inventory from qualified distributors.

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