1812GA471MAT1A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812GA471MAT1A is a 470 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 2000V (2kV) operation with C0G/NP0 temperature coefficient. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose applications requiring stable capacitance across temperature extremes (-55°C to 125°C). The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to address specific application requirements including improved tolerance specifications, alternative dielectric materials, or enhanced voltage ratings while maintaining mechanical and electrical compatibility.

Substiute Parts

1812GA471MAT1A\SB

KYOCERA AVXIn Stock: 8421812GA471MAT1A\SB Datasheet

Current PartRFQ

1812GA471JAT1A

KYOCERA AVXIn Stock: 33631812GA471JAT1A Datasheet

UpgradeRFQ

1812GC471KAT1A

KYOCERA AVXIn Stock: 24051812GC471KAT1A Datasheet

MFR RecommendedRFQ

1812HC471KAT1A

KYOCERA AVXIn Stock: 86941812HC471KAT1A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812GA471MAT1A is determined by strict adherence to the following parameters:

Mandatory Compatibility Parameters:

• Capacitance value: 470 pF (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variation Parameters:

• Tolerance: May be tighter (±5% or ±10%) than the original ±20%
• Voltage Rating: May be equal or higher than 2000V
• Temperature Coefficient: May differ (C0G/NP0 or X7R) based on application requirements
• Packaging Format: May vary (Cut Tape, Digi-Reel, Tape & Reel)

All three substitute parts meet the mandatory compatibility criteria and are therefore direct electrical and mechanical substitutes for the 1812GA471MAT1A.

Parameter Comparison

Engineering Selection Recommendations

1812GA471JAT1A (Upgrade Substitute)

This part provides improved tolerance specification (±5% versus ±20%) while maintaining identical voltage rating, temperature coefficient, and operating temperature range. The tighter tolerance reduces capacitance variation across production batches and temperature extremes. Identical thickness (2.20mm) ensures no PCB layout modifications are required. All compliance certifications (ROHS3, REACH Unaffected, EAR99) match the original specification. This substitute is suitable for applications where capacitance accuracy is critical.

1812GC471KAT1A (MFR Recommended Substitute)

This part maintains the same 2000V voltage rating and 470 pF capacitance but introduces X7R temperature coefficient in place of C0G/NP0. X7R dielectric provides broader temperature stability characteristics across the -55°C to 125°C operating range. Tolerance is ±10%, representing a middle ground between the original ±20% and the upgrade option. Reduced thickness (1.80mm versus 2.20mm) may provide design flexibility for space-constrained applications. All compliance certifications remain unchanged. This substitute is suitable for general-purpose applications where X7R performance is acceptable.

1812HC471KAT1A (MFR Recommended Substitute)

This part provides enhanced voltage rating (3000V versus 2000V) with X7R temperature coefficient and ±10% tolerance. The higher voltage rating provides additional safety margin in high-voltage circuit designs. Reduced thickness (1.80mm) matches the 1812GC471KAT1A. All compliance certifications remain unchanged. This substitute is suitable for applications requiring higher voltage headroom or where design margins necessitate elevated voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can 1812GA471JAT1A be used as a direct replacement for 1812GA471MAT1A?

A: Yes. Both parts share identical capacitance (470 pF), voltage rating (2000V), temperature coefficient (C0G/NP0), package (1812), and operating temperature range (-55°C to 125°C). The 1812GA471JAT1A provides tighter tolerance (±5% versus ±20%), which is a functional improvement. No circuit modifications or PCB layout changes are required.

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

A: C0G/NP0 dielectric provides near-zero capacitance change across the operating temperature range, ensuring stable performance in temperature-sensitive applications. X7R dielectric allows greater capacitance variation (typically ±15%) across temperature but offers higher capacitance density. Selection depends on application requirements for temperature stability.

Q: Can 1812GC471KAT1A or 1812HC471KAT1A replace 1812GA471MAT1A in all applications?

A: Both parts are mechanically and electrically compatible substitutes. However, the X7R temperature coefficient differs from the original C0G/NP0 specification. Applications requiring stable capacitance across temperature extremes should evaluate whether X7R performance meets circuit requirements. Applications with no temperature stability constraints can use these substitutes without modification.

Q: Why is 1812HC471KAT1A rated for 3000V instead of 2000V?

A: The 1812HC471KAT1A uses a different dielectric formulation optimized for higher voltage operation. The elevated voltage rating provides additional design margin and safety factor in high-voltage circuits. It is fully compatible with 2000V circuit designs and can be used as a direct substitute with improved voltage headroom.

Q: Are there packaging differences between these substitute parts?

A: The main part (1812GA471MAT1A) uses standard packaging. The 1812GA471JAT1A is available in Cut Tape (CT) and Digi-Reel formats. The 1812GC471KAT1A and 1812HC471KAT1A are supplied in Tape & Reel (TR) format. All packaging formats are compatible with standard surface-mount assembly equipment. Packaging selection depends on procurement and assembly workflow requirements.

Q: Do all substitute parts maintain the same physical footprint?

A: All parts use the 1812 (4532 Metric) package with identical length (4.60mm) and width (3.20mm). The 1812GA471MAT1A and 1812GA471JAT1A have maximum thickness of 2.20mm, while 1812GC471KAT1A and 1812HC471KAT1A have maximum thickness of 1.80mm. The reduced thickness of the latter two parts provides additional PCB design flexibility without affecting electrical performance or mechanical compatibility.

Q: Are all parts RoHS3 compliant?

A: Yes. All four parts (main and three substitutes) are ROHS3 compliant with REACH Unaffected status and EAR99 ECCN classification. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.