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 in production with 872 pieces in stock. Equivalent and substitute parts are identified when they maintain the same capacitance value and package footprint while offering compatible electrical and mechanical specifications.

Substiute Parts

1812WC102MAT3A

KYOCERA AVXIn Stock: 8941812WC102MAT3A 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 Value: Must be 1000 pF
• Package Footprint: Must be 1812 (4532 Metric) surface mount
• Temperature Coefficient: Must be X7R for stable performance across -55°C to 125°C
• Voltage Rating: Equal to or greater than 2500V
• Tolerance: ±10% or ±20% acceptable
• Compliance: ROHS3 compliant, MSL 1 rating

Substitute parts are grouped into two categories:

Category A - Direct Voltage Match (2500V):

• 1812WC102KAT1A: Same voltage rating with improved ±10% tolerance

Category B - Upgraded Voltage Rating (3000V):

• 1812HC102KAT1A: Higher voltage rating with ±10% tolerance
• KGM43FR73U102KV: Higher voltage rating, KGM-HV series, ±10% tolerance
• KGM43FR73U102MV: Higher voltage rating, KGM-HV series, ±20% tolerance
• C1812C102KHRAC7800: KEMET alternative with higher voltage rating, ±10% tolerance, reduced thickness

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Voltage): 1812WC102KAT1A is the primary equivalent, offering identical voltage rating with tighter ±10% tolerance and higher inventory availability (2778 pcs vs. 872 pcs). Both parts are KYOCERA AVX products with ROHS3 compliance and MSL 1 rating.

For Upgraded Performance (Higher Voltage Margin): When higher voltage margin is required, three options provide 3000V rating:

• 1812HC102KAT1A: KYOCERA AVX standard product with ±10% tolerance and reduced thickness (2.20mm vs. 2.80mm)
• KGM43FR73U102KV: KYOCERA AVX KGM-HV series with ±10% tolerance, highest inventory (3091 pcs)
• KGM43FR73U102MV: KYOCERA AVX KGM-HV series with ±20% tolerance matching original part tolerance

For Cross-Manufacturer Substitution: C1812C102KHRAC7800 (KEMET) provides 3000V rating with ±10% tolerance and lowest profile thickness (1.80mm). All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can 1812WC102KAT1A replace 1812WC102MAT3A directly? A: Yes. Both parts share identical capacitance (1000 pF), voltage rating (2500V), temperature coefficient (X7R), and 1812 package footprint. The substitute offers improved ±10% tolerance versus ±20% on the original.

Q: What is the difference between KYOCERA AVX standard and KGM-HV series? A: The KGM-HV series (KGM43FR73U102KV and KGM43FR73U102MV) are high-voltage optimized variants rated at 3000V with reduced thickness (2.21mm). Standard KYOCERA AVX parts (1812HC102KAT1A) also provide 3000V rating with 2.20mm thickness.

Q: Can I use a 3000V rated part in place of a 2500V rated part? A: Yes. Higher voltage-rated capacitors are electrically compatible in circuits designed for lower voltages. The 3000V rated substitutes (1812HC102KAT1A, KGM43FR73U102KV, KGM43FR73U102MV, C1812C102KHRAC7800) are suitable replacements with added voltage margin.

Q: Does the thickness difference affect PCB assembly? A: The 1812 package footprint remains constant across all parts. Thickness variations (0.071" to 0.110") may affect solder reflow profiles and component placement clearances. Verify PCB design constraints before selecting parts with significantly different thickness values.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL 1 (unlimited moisture sensitivity) rating, matching the original 1812WC102MAT3A specifications.

Q: What is the difference between KYOCERA AVX and KEMET alternatives? A: C1812C102KHRAC7800 (KEMET) provides equivalent electrical performance with the lowest profile thickness (1.80mm) and features low ESL design. All parts maintain identical capacitance, voltage, temperature coefficient, and compliance standards.