KYOCERA AVX 1812AC472MAT3A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 1812AC472MAT3A is a 4700 pF, 1000V (1kV) ceramic capacitor with X7R temperature coefficient in 1812 (4532 metric) surface mount package. This high-voltage multilayer ceramic capacitor (MLCC) is designed for general-purpose applications requiring stable capacitance across a wide operating temperature range of -55°C to 125°C. The part is ROHS3 compliant, REACH unaffected, and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard manufacturing and storage conditions. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained while offering improved tolerance specifications, higher voltage ratings, or enhanced availability.

Substiute Parts

1812AC472MAT3A\SB

KYOCERA AVXIn Stock: 8341812AC472MAT3A\SB Datasheet

Current PartRFQ

1812AC472KAT1A

KYOCERA AVXIn Stock: 33901812AC472KAT1A Datasheet

UpgradeRFQ

1812GC472KAT1A

KYOCERA AVXIn Stock: 77511812GC472KAT1A Datasheet

UpgradeRFQ

1812GC472MAT1A

KYOCERA AVXIn Stock: 41431812GC472MAT1A Datasheet

UpgradeRFQ

KGM43FR73D472KV

KYOCERA AVXIn Stock: 3679KGM43FR73D472KV Datasheet

UpgradeRFQ

C1812C472KDRAC7800

KEMETIn Stock: 55149C1812C472KDRAC7800 Datasheet

UpgradeRFQ

C4532X7R3A472K160KA

TDK CorporationIn Stock: 2152C4532X7R3A472K160KA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812AC472MAT3A is determined by the following criteria:

Primary Compatibility Requirements:

• Capacitance value: 4700 pF (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Temperature Coefficient: X7R (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match or better required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Allowable Variations:

• Voltage Rating: Equal to or greater than 1000V
• Tolerance: Equal to or tighter than ±20%
• Manufacturer: Different manufacturers permitted if all primary requirements met
• Packaging Format: Tape & Reel (TR), Cut Tape (CT), or equivalent
• Physical Dimensions: Minor variations acceptable within 1812 package specification

Substitute parts are grouped into two categories: direct replacements at 1000V with improved tolerance, and upgraded alternatives at 2000V offering higher voltage margin with maintained or improved tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement at 1000V Voltage Rating:

1812AC472KAT1A (KYOCERA AVX) - Identical voltage rating with improved ±10% tolerance. Same manufacturer ensures consistent performance characteristics. Suitable for direct substitution where tighter tolerance is beneficial.

C1812C472KDRAC7800 (KEMET) - Equivalent voltage rating with ±10% tolerance and reduced thickness (0.061" vs. 0.071"). Offers lower ESL characteristics. Cross-manufacturer substitution requires PCB layout verification for height clearance.

C4532X7R3A472K160KA (TDK Corporation) - Equivalent voltage rating with ±10% tolerance. Cross-manufacturer option with established high-voltage ceramic capacitor performance record.

Upgraded Alternatives at 2000V Voltage Rating:

1812GC472KAT1A (KYOCERA AVX) - Doubled voltage rating (2000V) with ±10% tolerance. Increased thickness (0.087") requires PCB layout verification. Provides enhanced voltage margin for applications with potential overvoltage conditions.

1812GC472MAT1A (KYOCERA AVX) - Doubled voltage rating (2000V) with ±20% tolerance matching original specification. Same manufacturer, increased thickness requires layout verification.

KGM43FR73D472KV (KYOCERA AVX, KGM HV Series) - Doubled voltage rating (2000V) with ±10% tolerance. Specialized high-voltage series with thickness 0.087" (2.21mm). Designed for demanding high-voltage applications.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating. Product status is active for all listed alternatives, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can I use a 2000V rated capacitor in place of the 1000V 1812AC472MAT3A?

A: Yes. Higher voltage-rated capacitors are electrically compatible substitutes. The 2000V alternatives (1812GC472KAT1A, 1812GC472MAT1A, KGM43FR73D472KV) provide increased voltage margin. However, verify PCB layout accommodates increased thickness (0.087" vs. 0.071"). No circuit redesign is required.

Q: What is the difference between ±20% and ±10% tolerance?

A: Tolerance specifies the allowable capacitance deviation from the nominal 4700 pF value. ±20% allows 3760 pF to 5640 pF; ±10% allows 4230 pF to 5170 pF. Tighter ±10% tolerance is suitable for applications requiring more precise capacitance values. Both are electrically valid substitutes.

Q: Are KEMET and TDK capacitors compatible with KYOCERA AVX designs?

A: Yes, provided all electrical parameters (capacitance, voltage, temperature coefficient, tolerance) and mechanical specifications (package, dimensions) match. Cross-manufacturer substitution is standard practice. Verify PCB layout accommodates any dimensional variations, particularly thickness.

Q: Does the C1812C472KDRAC7800 (KEMET) fit the same PCB footprint?

A: The C1812C472KDRAC7800 uses the same 1812 (4532 metric) package footprint. However, its reduced thickness (0.061" vs. 0.071") may affect height clearance in constrained assemblies. Verify available vertical space before substitution.

Q: Which substitute offers the best availability?

A: C1812C472KDRAC7800 (KEMET) shows highest inventory at 55,100 pieces. 1812GC472KAT1A (KYOCERA AVX) at 7,674 pieces and KGM43FR73D472KV (KYOCERA AVX) at 3,668 pieces also provide strong availability. Direct replacement 1812AC472KAT1A (KYOCERA AVX) has 3,340 pieces in stock.

Q: Can I substitute based on package format (Tape & Reel vs. Cut Tape)?

A: Yes. Packaging format (Tape & Reel, Cut Tape, Digi-Reel) does not affect electrical or mechanical compatibility. Selection depends on manufacturing process requirements and handling procedures. All listed substitutes are available in standard packaging formats.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original 1812AC472MAT3A regulatory requirements.