1812WC102MAT3A Equivalent & Substitute Parts

Part Overview

The 1812WC102MAT3A is a 1000 pF ceramic capacitor rated at 2500V (2.5kV) with X7R temperature coefficient, manufactured by KYOCERA AVX in 1812 (4532 Metric) surface mount package. This high-voltage 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 active and in stock with 910 units available. Equivalent and substitute parts are identified when they maintain the same capacitance value and package footprint while meeting or exceeding voltage and tolerance specifications.

Substiute Parts

1812WC102MAT3A\SB

KYOCERA AVXIn Stock: 9231812WC102MAT3A\SB Datasheet

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1812HC102KAT1A

KYOCERA AVXIn Stock: 25031812HC102KAT1A Datasheet

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1812WC102KAT1A

KYOCERA AVXIn Stock: 28691812WC102KAT1A Datasheet

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KGM43FR73U102KV

KYOCERA AVXIn Stock: 3187KGM43FR73U102KV Datasheet

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KGM43FR73U102MV

KYOCERA AVXIn Stock: 1494KGM43FR73U102MV Datasheet

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C1812C102KHRAC7800

KEMETIn Stock: 1416C1812C102KHRAC7800 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1812WC102MAT3A is determined by the following criteria:

• Capacitance: Must be 1000 pF (exact match required)
• Package: Must be 1812 (4532 Metric) surface mount to ensure PCB footprint compatibility
• Temperature Coefficient: Must be X7R to maintain stable capacitance across the operating temperature range
• Voltage Rating: Must be equal to or greater than 2500V
• Tolerance: May be equal to or tighter than ±20%
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Substitute parts are grouped into two categories:

1. Same Voltage (2500V): Parts with identical 2500V rating and improved tolerance (±10%)
2. Higher Voltage (3000V): Parts with upgraded 3000V rating, providing additional voltage margin while maintaining all other specifications

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

1812WC102KAT1A provides direct substitution at the same 2500V rating with improved ±10% tolerance. This part is recommended when tolerance tightening is beneficial and voltage margin is not a concern. Higher inventory availability (2778 units) supports supply chain continuity.

1812HC102KAT1A and KGM43FR73U102KV offer upgraded 3000V voltage rating with ±10% tolerance and reduced thickness (0.087" vs. 0.110"), providing additional design margin and potential PCB space optimization. Both are KYOCERA AVX products with active status.

KGM43FR73U102MV provides 3000V rating with ±20% tolerance matching the original part's tolerance specification, suitable for applications where tolerance consistency is prioritized over tightening.

C1812C102KHRAC7800 from KEMET offers 3000V rating with ±10% tolerance and the thinnest profile (0.071"), enabling maximum PCB density. This cross-manufacturer option is ROHS3 compliant and suitable for space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can I use a 3000V rated part in place of the 2500V original? A: Yes. Higher voltage ratings are acceptable substitutes as they provide additional voltage margin. All 3000V alternatives listed maintain the same 1000 pF capacitance, X7R temperature coefficient, and 1812 package footprint.

Q: What is the difference between ±10% and ±20% tolerance parts? A: Tolerance specifies the allowable deviation from the nominal 1000 pF value. ±10% tolerance parts (900–1100 pF) provide tighter capacitance control than ±20% parts (800–1200 pF). Selection depends on circuit requirements for capacitance accuracy.

Q: Are there physical size differences between substitutes? A: Yes. While all parts use the 1812 (4532 Metric) package with identical length (0.181") and width (0.126"), thickness varies: the original is 0.110" (2.80mm), while 3000V-rated alternatives range from 0.087" (2.20–2.21mm) to 0.071" (1.80mm). Verify PCB clearance before selecting thinner alternatives.

Q: Can I substitute a KEMET part for KYOCERA AVX? A: Yes. The C1812C102KHRAC7800 from KEMET is electrically and mechanically compatible, maintaining the same capacitance, voltage, temperature coefficient, and package. Both manufacturers' parts are ROHS3 compliant with MSL 1 rating.

Q: Which substitute offers the best availability? A: KGM43FR73U102KV has the highest inventory at 3091 units, followed by 1812WC102KAT1A at 2778 units and 1812HC102KAT1A at 2400 units.