1812WC471MAT1A\SB Equivalent & Substitute Parts

Part Overview

The 1812WC471MAT1A\SB is a 470 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 2500V operation with X7R temperature coefficient. This Surface Mount MLCC component is designed for general-purpose applications requiring high-voltage performance in a compact 1812 (4532 Metric) package form factor. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to provide alternative sourcing options with enhanced electrical specifications while maintaining mechanical and thermal compatibility.

Substiute Parts

1812WC471MAT1A\SB

KYOCERA AVXIn Stock: 6841812WC471MAT1A\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 1812WC471MAT1A\SB are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• Capacitance value: 470 pF (exact match required)
• Package / Case: 1812 (4532 Metric) (identical form factor)
• Temperature Coefficient: X7R (same thermal stability class)
• Operating Temperature Range: -55°C to 125°C (identical range)
• Mounting Type: Surface Mount, MLCC (same assembly method)
• Physical Dimensions: 4.60mm L × 3.20mm W × 1.80mm Max Thickness (identical)
• RoHS3 Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Voltage Rating: Substitutes rated at 3000V (3kV) exceed the 2500V requirement and are electrically compatible for applications requiring the original 2500V specification
• Tolerance: Substitutes with ±10% tolerance provide tighter specification than the original ±20%
• Manufacturer: KYOCERA AVX (same manufacturer for both substitutes)

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain Active product status and full RoHS3 compliance, ensuring regulatory and supply chain continuity. The 1812HC471KAT1A and KGM43ER73U471KV offer enhanced voltage ratings of 3000V compared to the original 2500V specification, providing additional design margin for high-voltage applications. Both substitutes feature improved capacitance tolerance of ±10% versus the original ±20%, supporting tighter circuit performance requirements. All three parts share identical mechanical form factors, thermal characteristics, and moisture sensitivity ratings, enabling direct substitution without PCB redesign or assembly process modification. Selection between substitute options depends on inventory availability and series-specific requirements, as both maintain equivalent electrical and mechanical compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can 1812HC471KAT1A or KGM43ER73U471KV be used as direct replacements for 1812WC471MAT1A\SB?

A: Yes. Both substitute parts maintain identical capacitance (470 pF), package form factor (1812 / 4532 Metric), temperature coefficient (X7R), operating temperature range (-55°C to 125°C), and physical dimensions. The higher voltage ratings (3000V vs. 2500V) and tighter tolerances (±10% vs. ±20%) are compatible with applications designed for the original part.

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

A: Both 1812HC471KAT1A and KGM43ER73U471KV share identical electrical specifications (470 pF, ±10%, 3000V, X7R). The KGM43ER73U471KV belongs to the KGM - HV series, while 1812HC471KAT1A uses standard KYOCERA AVX designation. Both are packaged in Tape & Reel format and maintain equivalent performance characteristics.

Q: Are there any package or mounting differences?

A: No. All three parts use identical 1812 (4532 Metric) Surface Mount MLCC packaging with matching physical dimensions (4.60mm L × 3.20mm W × 1.80mm Max thickness). No PCB layout or assembly process modifications are required for substitution.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both 1812HC471KAT1A and KGM43ER73U471KV are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level remains MSL 1 (Unlimited) for all parts.

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

A: The substitute parts feature ±10% tolerance compared to the original ±20%. This tighter tolerance specification reduces capacitance variation across the production batch, supporting applications requiring more precise circuit performance and reduced design margin requirements.