1812AC103MAT1A Equivalent & Substitute Parts

Part Overview

The 1812AC103MAT1A is a 10000 pF (10 nF) ceramic capacitor manufactured by KYOCERA AVX, rated for 1000V (1kV) operation with X7R temperature coefficient. This surface mount multilayer ceramic capacitor (MLCC) in 1812 (4532 metric) package is designed for general purpose high voltage applications. The part is active and in production, with 638 units currently in stock. Substitute parts are identified to address inventory availability, performance upgrades, or alternative sourcing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

1812AC103MAT1A

KYOCERA AVXIn Stock: 7431812AC103MAT1A Datasheet

Current PartRFQ

KGM43FR73A103MV

KYOCERA AVXIn Stock: 2821KGM43FR73A103MV Datasheet

DirectRFQ

1812AC103KAT1A

KYOCERA AVXIn Stock: 26421812AC103KAT1A Datasheet

UpgradeRFQ

C1812C103KDRAC7800

KEMETIn Stock: 12307C1812C103KDRAC7800 Datasheet

UpgradeRFQ

C4532X7R3A103K200KA

TDK CorporationIn Stock: 86903C4532X7R3A103K200KA Datasheet

UpgradeRFQ

C1812C103MDRAC7800

KEMETIn Stock: 2130C1812C103MDRAC7800 Datasheet

MFR RecommendedRFQ

C4532X7S3A103K160KA

TDK CorporationIn Stock: 1359C4532X7S3A103K160KA Datasheet

MFR RecommendedRFQ

VPDR102W103M1GV001E

Johanson Dielectrics Inc.In Stock: 865VPDR102W103M1GV001E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Substitutes (Identical Electrical Performance): Parts with matching capacitance (10000 pF), voltage rating (1000V), temperature coefficient (X7R), tolerance (±20%), operating temperature range (-55°C to 125°C), and package (1812/4532 metric). These parts are electrically and mechanically interchangeable with the main part.

Upgrade Substitutes (Enhanced Tolerance): Parts with tighter tolerance (±10% instead of ±20%) while maintaining all other electrical specifications. These provide improved capacitance accuracy and are suitable for applications requiring higher precision.

Temperature Coefficient Variants: Parts with X7S temperature coefficient instead of X7R. X7S provides tighter capacitance stability across temperature but with a narrower operating range. These are functionally compatible but with different thermal characteristics.

Dimensional Considerations: All substitute parts maintain the 1812 (4532 metric) package footprint. Thickness variations (1.55mm to 2.80mm) may affect PCB assembly clearance but do not impact electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): KGM43FR73A103MV, C1812C103MDRAC7800, and VPDR102W103M1GV001E are electrically and mechanically equivalent to 1812AC103MAT1A. All three are ROHS3 compliant with MSL 1 rating. KGM43FR73A103MV offers the highest inventory (2712 units) from the original manufacturer. C1812C103MDRAC7800 provides the thinnest profile (1.55mm) if PCB clearance is constrained. VPDR102W103M1GV001E is available in cut tape packaging if reel format is not required.

For Improved Tolerance Performance: 1812AC103KAT1A, C1812C103KDRAC7800, and C4532X7R3A103K200KA provide ±10% tolerance versus the original ±20%. All maintain X7R temperature coefficient and 1000V rating. C4532X7R3A103K200KA has the largest available inventory (86839 units) and is suitable for high-volume applications. C1812C103KDRAC7800 combines upgrade tolerance with minimal thickness (1.55mm).

For Temperature Coefficient Flexibility: C4532X7S3A103K160KA offers X7S temperature coefficient with ±10% tolerance. X7S provides tighter capacitance stability across the -55°C to 125°C operating range compared to X7R. This part is suitable for applications with stringent temperature performance requirements.

Compliance and Certifications: All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. All carry MSL 1 (unlimited moisture sensitivity level), matching the original part's environmental rating.

Frequently Asked Questions (FAQ)

Q: Can KGM43FR73A103MV be used as a direct replacement for 1812AC103MAT1A? A: Yes. KGM43FR73A103MV is a direct substitute with identical capacitance (10000 pF), tolerance (±20%), voltage rating (1000V), temperature coefficient (X7R), and package (1812/4532 metric). Thickness is 2.21mm versus 2.20mm, which is within acceptable tolerance for PCB assembly.

Q: What is the difference between the upgrade parts and the main part? A: Upgrade parts (1812AC103KAT1A, C1812C103KDRAC7800, C4532X7R3A103K200KA) feature ±10% tolerance instead of ±20%, providing tighter capacitance accuracy. All other electrical and mechanical specifications remain identical. These are suitable for applications requiring higher precision without circuit redesign.

Q: Why would I choose C4532X7S3A103K160KA over other substitutes? A: C4532X7S3A103K160KA uses X7S temperature coefficient instead of X7R. X7S provides superior capacitance stability across temperature variations, making it suitable for applications with strict thermal performance requirements. The ±10% tolerance also improves accuracy. However, X7S has a narrower temperature range specification than X7R in some applications.

Q: Are there packaging differences between substitute parts? A: All parts use the 1812 (4532 metric) surface mount package with identical footprint. Thickness varies from 1.55mm to 2.80mm. Thinner parts (KEMET C1812C series at 1.55mm) may offer better PCB clearance. VPDR102W103M1GV001E is available in cut tape format instead of tape and reel.

Q: Do all substitute parts meet the same compliance standards? A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and carry EAR99 classification. All have MSL 1 rating (unlimited moisture sensitivity), matching the original part's environmental specifications.

Q: Which substitute has the best inventory availability? A: C4532X7R3A103K200KA from TDK Corporation has the highest inventory at 86839 units. This part is an upgrade option with ±10% tolerance and is suitable for high-volume production requirements.