1812WC471MAT3A\SB Equivalent & Substitute Parts

Part Overview

The 1812WC471MAT3A\SB is a 470 pF ceramic capacitor rated at 2500V (2.5kV) 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 temperature range (-55°C to 125°C). The part is currently active in production with 1137 units in stock. Substitute parts are identified when design requirements allow for higher voltage ratings, improved tolerance specifications, or alternative series options while maintaining identical capacitance values and package dimensions.

Substiute Parts

1812WC471MAT3A\SB

KYOCERA AVXIn Stock: 11691812WC471MAT3A\SB 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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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1812WC471MAT3A\SB are qualified based on the following criteria:

Mandatory Matching Parameters:

• Capacitance: 470 pF (exact match required)
• Temperature Coefficient: X7R (required for temperature stability)
• Package / Case: 1812 (4532 Metric) (required for mechanical compatibility)
• Mounting Type: Surface Mount, MLCC (required for assembly compatibility)
• Physical Dimensions: 0.181" L x 0.126" W, 0.071" thickness (required for PCB fit)
• Operating Temperature Range: -55°C to 125°C (required for thermal performance)

Allowable Variation Parameters:

• Voltage Rating: May be equal to or higher than 2500V
• Tolerance: May be tighter (lower) than ±20%
• Manufacturer: Alternative qualified manufacturers acceptable
• Series Designation: May differ while maintaining electrical specifications

The identified substitutes meet all mandatory parameters and offer enhanced specifications in voltage rating and tolerance, making them suitable for applications where the original part is unavailable or where improved performance margins are desired.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts (1812HC471KAT1A and KGM43ER73U471KV) are active production components from KYOCERA AVX with full ROHS3 compliance and REACH unaffected status, matching the regulatory compliance profile of the original part.

1812HC471KAT1A offers a 500V voltage rating increase (3000V vs. 2500V) and improved tolerance specification (±10% vs. ±20%), with standard packaging in Tape & Reel format. This part is suitable for applications requiring enhanced voltage margin or tighter capacitance tolerance.

KGM43ER73U471KV is part of the KGM - HV series and provides identical electrical upgrades (3000V rating, ±10% tolerance) with equivalent mechanical and thermal specifications. This part is also available in Tape & Reel packaging.

Both substitutes maintain identical physical dimensions, thermal performance, and moisture sensitivity characteristics, ensuring direct compatibility with existing PCB layouts and assembly processes. Selection between substitutes depends on series preference and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 1812HC471KAT1A or KGM43ER73U471KV be used as direct replacements for 1812WC471MAT3A\SB?

A: Yes. Both substitute parts maintain identical capacitance (470 pF), temperature coefficient (X7R), package dimensions (1812/4532 Metric), and thermal operating range (-55°C to 125°C). The higher voltage ratings (3000V vs. 2500V) and improved tolerances (±10% vs. ±20%) represent performance enhancements compatible with the original design.

Q: What are the key differences between the substitute parts?

A: Both 1812HC471KAT1A and KGM43ER73U471KV provide identical electrical specifications (470 pF, ±10%, 3000V, X7R). The primary distinction is series designation: 1812HC471KAT1A is a standard KYOCERA AVX part, while KGM43ER73U471KV belongs to the KGM - HV high-voltage series. Both are ROHS3 compliant and REACH unaffected.

Q: Are there any package or mounting differences?

A: No. All three parts use identical 1812 (4532 Metric) surface-mount packages with matching physical dimensions (0.181" L x 0.126" W x 0.071" thickness) and Moisture Sensitivity Level 1 (Unlimited). Assembly processes and PCB layouts require no modification.

Q: What is the significance of the improved tolerance specification?

A: The substitute parts offer ±10% tolerance compared to the original ±20%. This tighter tolerance specification reduces capacitance variation across the production range, beneficial for applications with strict capacitance requirements or where circuit performance is sensitive to component value drift.

Q: Are regulatory certifications identical across all three parts?

A: Yes. All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all three, indicating no special moisture handling requirements during storage or assembly.