1812AC471MAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812AC471MAT1A is a 470 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX with a rated voltage of 1000V (1kV) and X7R temperature coefficient. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when design requirements necessitate higher voltage ratings, improved tolerance specifications, or alternative temperature coefficient characteristics while maintaining the same capacitance value and package footprint.

Substiute Parts

1812AC471MAT1A\SB

KYOCERA AVXIn Stock: 7081812AC471MAT1A\SB Datasheet

Current PartRFQ

1812GA471JAT1A

KYOCERA AVXIn Stock: 33631812GA471JAT1A Datasheet

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1812GC471KAT1A

KYOCERA AVXIn Stock: 24051812GC471KAT1A Datasheet

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1812HC471KAT1A

KYOCERA AVXIn Stock: 86941812HC471KAT1A Datasheet

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KGM43ER73U471KV

KYOCERA AVXIn Stock: 1150KGM43ER73U471KV Datasheet

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CC1812JKNPOCBN471

YAGEOIn Stock: 3951CC1812JKNPOCBN471 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812AC471MAT1A is determined by the following criteria:

Allowed Substitution Parameters:

• Capacitance value must remain 470 pF
• Package must remain 1812 (4532 Metric)
• Mounting type must remain Surface Mount, MLCC
• Operating temperature range must remain -55°C ~ 125°C
• RoHS3 compliance must be maintained

Variable Parameters Permitting Substitution:

• Voltage rating may increase (1kV, 2kV, 3kV)
• Tolerance may improve (±20%, ±10%, ±5%)
• Temperature coefficient may change (X7R, C0G/NP0)
• Manufacturer may differ (KYOCERA AVX, YAGEO)
• Physical thickness may vary within package constraints

The substitute parts are grouped into two categories: upgrade substitutes with higher voltage ratings (2kV and 3kV) and manufacturer-recommended alternatives with equivalent voltage ratings but improved tolerance or temperature coefficient specifications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory conformance.

For equivalent voltage applications (1000V): The CC1812JKNPOCBN471 from YAGEO provides an alternative source with improved tolerance (±5% versus ±20%) and C0G/NP0 temperature coefficient, offering superior capacitance stability. Physical thickness is reduced to 0.059" (1.50mm), which may provide layout advantages in space-constrained designs.

For elevated voltage requirements (2000V): The 1812GA471JAT1A offers C0G/NP0 temperature coefficient with ±5% tolerance, while the 1812GC471KAT1A maintains X7R characteristics with ±10% tolerance. The 1812GA471JAT1A exhibits increased thickness (0.087" / 2.20mm) due to higher voltage rating requirements.

For maximum voltage capability (3000V): Both 1812HC471KAT1A and KGM43ER73U471KV provide 3kV rating with X7R temperature coefficient and ±10% tolerance. The KGM43ER73U471KV belongs to the KGM - HV series specifically designed for high-voltage applications. Both maintain 0.071" (1.80mm) thickness consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can the 1812AC471MAT1A be directly replaced with a higher voltage-rated substitute?

A: Yes. Higher voltage ratings (2kV or 3kV) are direct substitutes for 1kV applications. The capacitance value, package footprint, and mounting characteristics remain identical. Physical thickness may increase with higher voltage ratings due to dielectric requirements.

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

A: X7R provides ±15% capacitance variation across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with ±0.3% per °C maximum variation. C0G/NP0 substitutes are suitable for applications requiring tighter capacitance tolerance across temperature extremes.

Q: Does tolerance improvement affect circuit performance?

A: Improved tolerance (from ±20% to ±10% or ±5%) reduces capacitance variation from the nominal value. This is beneficial for precision circuits but does not affect basic functionality in general-purpose applications where the original ±20% tolerance was acceptable.

Q: Are there physical space considerations when substituting parts?

A: The 1812 (4532 Metric) package footprint remains constant across all substitutes. However, thickness varies: the original part and most substitutes measure 0.071" (1.80mm), the 1812GA471JAT1A measures 0.087" (2.20mm), and the CC1812JKNPOCBN471 measures 0.059" (1.50mm). Verify PCB clearance for components adjacent to the capacitor.

Q: Are all substitute parts available in the same packaging formats?

A: The 1812AC471MAT1A is available in standard packaging. Substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats depending on the specific part number. Verify packaging requirements for your procurement process.

Q: What is the significance of the KGM series designation for the KGM43ER73U471KV?

A: The KGM - HV series indicates optimization for high-voltage applications. This part is functionally equivalent to the 1812HC471KAT1A at 3kV rating but represents a specialized product line from KYOCERA AVX for demanding high-voltage circuits.