1812AC103MAT9A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812AC103MAT9A is a 10000 pF (10 nF) high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 1000V operation with X7R temperature coefficient. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 metric) package is designed for general-purpose applications requiring stable capacitance across the -55°C to 125°C operating range. The part is active and in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching or exceeding electrical specifications while maintaining mechanical compatibility with the 1812 package footprint.

Substiute Parts

1812AC103MAT9A

KYOCERA AVXIn Stock: 8321812AC103MAT9A Datasheet

Current PartRFQ

1812SC103KAT1A

KYOCERA AVXIn Stock: 19871812SC103KAT1A Datasheet

DirectRFQ

KGM43FR73A103MV

KYOCERA AVXIn Stock: 2821KGM43FR73A103MV Datasheet

DirectRFQ

1812AC103KAT1A

KYOCERA AVXIn Stock: 26421812AC103KAT1A Datasheet

UpgradeRFQ

C4532X7R3A103K200KA

TDK CorporationIn Stock: 86903C4532X7R3A103K200KA Datasheet

UpgradeRFQ

C1812C103MDRAC7800

KEMETIn Stock: 2130C1812C103MDRAC7800 Datasheet

MFR RecommendedRFQ

VPDR102W103M1GV001E

Johanson Dielectrics Inc.In Stock: 865VPDR102W103M1GV001E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1812AC103MAT9A are classified based on the following substitution criteria:

Direct Substitutes maintain identical electrical specifications: 10000 pF capacitance, ±20% tolerance, 1000V voltage rating, X7R temperature coefficient, and -55°C to 125°C operating range. These parts are mechanically compatible with the 1812 package footprint and meet all compliance requirements.

Upgraded Substitutes exceed the voltage rating (1500V) or improve tolerance (±10%) while maintaining the same capacitance value, temperature coefficient, and package. These parts provide enhanced performance margins and are backward-compatible for applications requiring the original 1000V specification.

Cross-Manufacturer Equivalents are sourced from alternative manufacturers (TDK Corporation, KEMET, Johanson Dielectrics Inc.) and provide identical or superior electrical and mechanical specifications within the 1812 package envelope.

The key parameters determining substitution eligibility are: capacitance value (10000 pF), temperature coefficient (X7R), package type (1812/4532 metric), mounting method (surface mount), and minimum voltage rating (1000V or higher).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the original 1812AC103MAT9A specification.

For direct replacement with identical specifications: KGM43FR73A103MV (KYOCERA AVX, KGM - HV series) provides the same ±20% tolerance and 1000V rating with equivalent thickness and higher inventory availability (2712 Pcs).

For improved tolerance and same voltage rating: 1812AC103KAT1A (KYOCERA AVX) upgrades tolerance to ±10% while maintaining 1000V operation and identical physical dimensions, suitable for applications requiring tighter capacitance control.

For enhanced voltage margin: 1812SC103KAT1A (KYOCERA AVX) increases voltage rating to 1500V with improved ±10% tolerance, accommodating designs with higher transient voltage stress while maintaining the same capacitance and temperature coefficient.

For cross-manufacturer sourcing: C4532X7R3A103K200KA (TDK Corporation) offers ±10% tolerance at 1000V with the highest inventory level (86839 Pcs), providing supply chain flexibility. C1812C103MDRAC7800 (KEMET) provides the lowest profile option at 0.061" thickness with low ESL characteristics, beneficial for high-frequency filtering applications.

For specialized applications: VPDR102W103M1GV001E (Johanson Dielectrics Inc., HVS-PME series) is specified for SMPS filtering with ±20% tolerance and 1000V rating.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating than the original 1812AC103MAT9A?

A: Yes. Parts rated for 1500V (such as 1812SC103KAT1A) are backward-compatible with applications designed for 1000V operation. Higher voltage ratings provide additional safety margin and do not degrade performance in lower-voltage circuits.

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

A: Tolerance specifies the allowable deviation from the nominal 10000 pF capacitance value. ±20% tolerance allows 8000 pF to 12000 pF; ±10% tolerance allows 9000 pF to 11000 pF. Applications requiring tighter capacitance control should specify ±10% parts such as 1812AC103KAT1A or C4532X7R3A103K200KA.

Q: Are all substitute parts mechanically compatible with the 1812 package footprint?

A: All listed substitutes use the 1812 (4532 metric) package with identical length (0.181" / 4.60mm) and width (0.126" / 3.20mm). Maximum thickness varies between 0.061" and 0.110"; verify PCB clearance for applications with height constraints.

Q: Which substitute offers the best supply availability?

A: C4532X7R3A103K200KA (TDK Corporation) has the highest inventory at 86839 Pcs, followed by KGM43FR73A103MV (KYOCERA AVX) at 2712 Pcs.

Q: Do all substitutes meet ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity), matching the original part's environmental and regulatory certifications.

Q: Can I substitute across different manufacturers?

A: Yes. Cross-manufacturer substitutes (TDK, KEMET, Johanson Dielectrics) maintain identical electrical specifications and package compatibility. Verify with your procurement and quality assurance processes for any manufacturer-specific requirements.