1812AC103MAT1Q Equivalent & Substitute Parts

Part Overview

The 1812AC103MAT1Q is a 10000 pF (0.01 µF) ceramic capacitor manufactured by KYOCERA AVX, rated for 1000V (1kV) with X7R temperature coefficient. This high-voltage surface-mount 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 with MSL 1 (unlimited moisture sensitivity level) and is currently in active production status with 817 units in stock.

Equivalent and substitute parts are identified when component availability is limited, lead times are extended, or design requirements necessitate alternative manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

1812AC103MAT1Q

KYOCERA AVXIn Stock: 8891812AC103MAT1Q 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 of the 1812AC103MAT1Q is determined by strict equivalence in the following parameters:

• Capacitance Value: 10000 pF (exact match required)
• Voltage Rating: 1000V minimum (equal or higher acceptable)
• Temperature Coefficient: X7R or X7S (both acceptable for general-purpose applications)
• Package / Case: 1812 (4532 Metric) form factor
• Mounting Type: Surface Mount, MLCC
• Operating Temperature Range: -55°C to 125°C minimum
• Compliance: ROHS3 and REACH requirements

Substitute parts are categorized as direct equivalents (matching tolerance ±20%), upgrades (improved tolerance ±10%), or manufacturer-recommended alternatives (same or compatible specifications from different manufacturers).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Tolerance ±20%)

KGM43FR73A103MV (KYOCERA AVX) and C1812C103MDRAC7800 (KEMET) are direct functional equivalents to 1812AC103MAT1Q. Both maintain ±20% tolerance, 1000V rating, X7R temperature coefficient, and 1812 package form factor. KGM43FR73A103MV offers higher inventory availability (2712 units) from the same manufacturer. C1812C103MDRAC7800 provides equivalent performance with reduced thickness (1.55mm vs 2.20mm), beneficial for space-constrained designs. VPDR102W103M1GV001E (Johanson Dielectrics) is functionally equivalent but features increased thickness (2.80mm), which may impact PCB layout considerations.

Upgraded Tolerance (±10%)

1812AC103KAT1A (KYOCERA AVX), C1812C103KDRAC7800 (KEMET), and C4532X7R3A103K200KA (TDK Corporation) provide improved tolerance specification (±10%) while maintaining all other electrical parameters. These upgrades are suitable for applications requiring tighter capacitance control. C4532X7R3A103K200KA offers the highest inventory availability (86839 units) and represents the most readily available option across all substitutes.

Temperature Coefficient Alternative (X7S)

C4532X7S3A103K160KA (TDK Corporation) substitutes X7R with X7S temperature coefficient while maintaining ±10% tolerance and 1000V rating. X7S provides wider capacitance stability across temperature extremes (-55°C to 125°C) compared to X7R, at the cost of slightly increased thickness (1.80mm). This alternative is suitable only when enhanced temperature stability is a design requirement.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and active production status.

Frequently Asked Questions (FAQ)

Q: Can I use KGM43FR73A103MV as a direct replacement for 1812AC103MAT1Q?

A: Yes. KGM43FR73A103MV is a direct equivalent from the same manufacturer (KYOCERA AVX) with identical electrical specifications: 10000 pF, ±20% tolerance, 1000V rating, X7R temperature coefficient, and 1812 package. Thickness variation (2.21mm vs 2.20mm) is negligible for PCB assembly.

Q: What is the difference between X7R and X7S temperature coefficients?

A: Both X7R and X7S are Class II ceramic dielectrics suitable for general-purpose applications. X7R provides ±15% capacitance change across -55°C to 125°C. X7S provides ±22% capacitance change across the same range. X7S offers wider stability but with slightly larger capacitance variation. Selection depends on circuit tolerance requirements.

Q: Why do some substitutes have ±10% tolerance instead of ±20%?

A: Parts with ±10% tolerance (1812AC103KAT1A, C1812C103KDRAC7800, C4532X7R3A103K200KA) represent upgraded specifications. These are suitable direct replacements when tighter capacitance control improves circuit performance. The original ±20% specification remains acceptable for general-purpose applications.

Q: Does thickness variation affect PCB assembly compatibility?

A: Thickness variations (1.55mm to 2.80mm) may impact PCB layout, solder reflow profiles, and component placement density. Verify PCB design clearances and reflow oven settings when substituting parts with significantly different thickness. The original 1812AC103MAT1Q thickness is 2.20mm; C1812C103KDRAC7800 (1.55mm) and VPDR102W103M1GV001E (2.80mm) represent the extremes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original 1812AC103MAT1Q environmental certifications.

Q: Which substitute offers the best inventory availability?

A: C4532X7R3A103K200KA (TDK Corporation) provides the highest inventory availability at 86839 units, with ±10% tolerance upgrade and identical electrical specifications to the original part.