1812WC471MATME Equivalent & Substitute Parts

Part Overview

The 1812WC471MATME is a 470 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 2500V operation with X7R temperature coefficient characteristics. This Surface Mount MLCC (Multilayer Ceramic Capacitor) in 1812 (4532 Metric) package format is designed for general-purpose high-voltage applications requiring stable capacitance across the -55°C to 125°C operating temperature range. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and performance upgrades when required for specific application requirements.

Substiute Parts

1812WC471MATME

KYOCERA AVXIn Stock: 9861812WC471MATME Datasheet

Current PartRFQ

1812HC471KAT1A

KYOCERA AVXIn Stock: 86941812HC471KAT1A Datasheet

UpgradeRFQ

KGM43ER73U471KV

KYOCERA AVXIn Stock: 1150KGM43ER73U471KV Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1812WC471MATME are qualified based on the following critical parameters that determine functional interchangeability:

Mandatory Matching Parameters:

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

Allowable Variation Parameters:

• Voltage Rating: Substitutes rated at 3000V (3kV) are acceptable as they exceed the 2500V requirement
• Tolerance: Substitutes with ±10% tolerance are acceptable as they provide tighter specification than the ±20% original
• Packaging Format: Tape & Reel (TR) substitutes are compatible with the original packaging

The identified substitute parts 1812HC471KAT1A and KGM43ER73U471KV meet all mandatory matching criteria while providing upgraded voltage ratings and improved tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—1812WC471MATME, 1812HC471KAT1A, and KGM43ER73U471KV—maintain Active product status with full ROHS3 compliance and REACH unaffected designation, ensuring regulatory compliance across current and future applications.

The 1812HC471KAT1A and KGM43ER73U471KV substitutes provide performance upgrades through increased voltage rating (3000V versus 2500V) and improved tolerance specification (±10% versus ±20%), while maintaining identical physical form factor, thermal characteristics, and moisture sensitivity rating. These upgrades enable use in higher-voltage stress environments without PCB redesign or assembly process modification.

Selection between substitute options depends on inventory availability and supply chain requirements. Both substitutes are functionally equivalent for applications originally specified with the 1812WC471MATME, with the upgrade parameters providing additional design margin.

Frequently Asked Questions (FAQ)

Q: Can 1812HC471KAT1A or KGM43ER73U471KV be used as direct replacements for 1812WC471MATME?

A: Yes. Both substitute parts match the mandatory parameters: 470 pF capacitance, X7R temperature coefficient, 1812 package format, identical physical dimensions, and -55°C to 125°C operating range. The higher voltage ratings (3000V) and tighter tolerance (±10%) represent performance upgrades compatible with the original application.

Q: What is the difference between 1812HC471KAT1A and KGM43ER73U471KV?

A: Both parts share identical electrical specifications (470 pF, ±10%, 3000V, X7R, 1812 package). The primary difference is series designation: 1812HC471KAT1A belongs to the standard KYOCERA AVX line, while KGM43ER73U471KV belongs to the KGM - HV (High Voltage) series. Inventory levels differ, with 1812HC471KAT1A offering 8662 units and KGM43ER73U471KV offering 1135 units in current stock.

Q: Are the physical dimensions identical across all three parts?

A: Yes. All three parts use the 1812 (4532 Metric) package with identical dimensions: 0.181" length × 0.126" width (4.60mm × 3.20mm) and 0.071" thickness (1.80mm). PCB layout and assembly tooling require no modification.

Q: What is the tolerance difference, and does it affect circuit performance?

A: The original 1812WC471MATME specifies ±20% tolerance, while both substitutes specify ±10% tolerance. The tighter tolerance in substitutes reduces capacitance variation across the production range, providing improved circuit performance consistency. Applications sensitive to capacitance drift benefit from the ±10% specification.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Can these parts be used interchangeably in high-voltage applications?

A: Yes, with consideration for voltage stress margins. The 1812WC471MATME is rated for 2500V operation. The substitute parts rated at 3000V provide additional voltage margin (500V higher rating) and are suitable for applications requiring higher voltage stress tolerance or design margin enhancement.