1812AC273MAT9A Equivalent & Substitute Parts

Part Overview

The 1812AC273MAT9A is a 0.027 µF ceramic capacitor rated for 1000V (1kV) with X7R temperature coefficient, manufactured by KYOCERA AVX. This high-voltage surface-mount multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across a wide operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

1812AC273MAT9A

KYOCERA AVXIn Stock: 10661812AC273MAT9A Datasheet

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1812AC273KAT1A

KYOCERA AVXIn Stock: 24891812AC273KAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812AC273MAT9A is determined by strict equivalence in the following critical parameters:

• Capacitance Value: 0.027 µF (exact match required)
• Voltage Rating: 1000V (1kV) minimum (equal or higher acceptable)
• Temperature Coefficient: X7R (ensures stable performance across operating range)
• Package / Case: 1812 (4532 Metric) (ensures mechanical and PCB compatibility)
• Mounting Type: Surface Mount, MLCC (maintains assembly process compatibility)
• Operating Temperature Range: -55°C to 125°C (minimum requirement)
• Compliance: ROHS3 Compliant, REACH Unaffected (regulatory requirement)

The substitute part 1812AC273KAT1A meets all critical parameters while offering improved capacitance tolerance (±10% versus ±20%), providing enhanced precision for applications requiring tighter component specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC273MAT9A and 1812AC273KAT1A are active production parts manufactured by KYOCERA AVX with full ROHS3 compliance and REACH unaffected status. The primary distinction is capacitance tolerance: the main part offers ±20% tolerance, while the substitute provides ±10% tolerance. Selection between these parts should be based on circuit tolerance requirements. Applications requiring tighter capacitance accuracy benefit from the 1812AC273KAT1A. Both parts maintain identical electrical performance, thermal characteristics, and mechanical compatibility. Packaging format differs (bulk versus Tape & Reel), which may influence procurement and assembly workflow considerations.

Frequently Asked Questions (FAQ)

Q: Can 1812AC273KAT1A replace 1812AC273MAT9A in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent with identical capacitance value (0.027 µF), voltage rating (1000V), temperature coefficient (X7R), package (1812/4532 Metric), and operating temperature range (-55°C to 125°C). The substitute offers improved tolerance (±10% versus ±20%), making it suitable for direct substitution.

Q: What is the difference between ±20% and ±10% tolerance?

A: Tolerance specifies the allowable deviation from the nominal capacitance value. The 1812AC273MAT9A permits ±20% variation (0.0216 µF to 0.0324 µF), while 1812AC273KAT1A permits ±10% variation (0.0243 µF to 0.0297 µF). Tighter tolerance provides more precise capacitance for applications sensitive to component variation.

Q: Are there packaging differences between these parts?

A: Yes. The 1812AC273MAT9A is supplied in bulk packaging, while 1812AC273KAT1A is supplied in Tape & Reel (TR) format. Both are surface-mount compatible. Tape & Reel packaging is standard for automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity). Regulatory and environmental compliance is identical.

Q: What determines substitution eligibility for this capacitor?

A: Substitution is valid when the replacement part maintains identical capacitance (0.027 µF), voltage rating (1000V minimum), temperature coefficient (X7R), package (1812/4532 Metric), and operating temperature range (-55°C to 125°C). Tolerance and packaging format may vary without affecting electrical compatibility.