1812AC103MAT1A\SB Ceramic Capacitor – Equivalent & Substitute Parts

Part Overview

The 1812AC103MAT1A\SB is a 10000 pF (10 nF) high-voltage 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 applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization when the primary part becomes unavailable or when design specifications permit tolerance or performance upgrades.

Key Parameters

Parameter	Value
Capacitance	10000 pF (10 nF)
Tolerance	±20%
Voltage Rating	1000V (1kV)
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1812AC103MAT1A\SB 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 Unaffected status

Substitute parts are categorized as follows:

Direct Equivalent (Same Tolerance ±20%): Parts with identical electrical specifications and packaging, differing only in manufacturer or internal construction.

Upgrade Parts (Tighter Tolerance ±10%): Parts with improved tolerance specification, suitable for applications requiring higher capacitance accuracy while maintaining all other electrical and mechanical parameters.

Manufacturer-Recommended Alternatives: Parts approved by original manufacturers as functional equivalents, including variants with alternative temperature coefficients (X7S) or dimensional variations within the 1812 package family.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temp Coeff	Package	Thickness (Max)	RoHS Status	Inventory
1812AC103MAT1A\SB	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	796 Pcs
KGM43FR73A103MV	KYOCERA AVX	10000 pF	±20%	1000V	X7R	1812 (4532)	0.087" (2.21mm)	ROHS3	2712 Pcs
1812AC103KAT1A	KYOCERA AVX	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	2540 Pcs
C1812C103KDRAC7800	KEMET	10000 pF	±10%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	12273 Pcs
C4532X7R3A103K200KA	TDK Corporation	10000 pF	±10%	1000V	X7R	1812 (4532)	0.087" (2.20mm)	ROHS3	86839 Pcs
C1812C103MDRAC7800	KEMET	10000 pF	±20%	1000V	X7R	1812 (4532)	0.061" (1.55mm)	ROHS3	2112 Pcs
C4532X7S3A103K160KA	TDK Corporation	10000 pF	±10%	1000V	X7S	1812 (4532)	0.071" (1.80mm)	ROHS3	1302 Pcs
VPDR102W103M1GV001E	Johanson Dielectrics Inc.	10000 pF	±20%	1000V	X7R	1812 (4532)	0.110" (2.80mm)	ROHS3	804 Pcs

Engineering Selection Recommendations

Direct Equivalent Selection: The KGM43FR73A103MV (KYOCERA AVX) and C1812C103MDRAC7800 (KEMET) maintain identical electrical specifications to the primary part with ±20% tolerance. Both are ROHS3 compliant and carry unlimited moisture sensitivity rating. The KGM43FR73A103MV offers higher inventory availability (2712 pcs) within the same manufacturer family. The C1812C103MDRAC7800 provides a lower-profile alternative (1.55mm thickness) while maintaining tolerance equivalence.

Upgrade Part Selection: The 1812AC103KAT1A (KYOCERA AVX), C1812C103KDRAC7800 (KEMET), and C4532X7R3A103K200KA (TDK Corporation) offer improved ±10% tolerance specification. These parts are suitable for applications requiring tighter capacitance accuracy. The C4532X7R3A103K200KA provides the highest inventory availability (86839 pcs) and maintains standard thickness (2.20mm). The C1812C103KDRAC7800 offers a compact profile (1.55mm) with enhanced low-ESL characteristics.

Temperature Coefficient Variant: The C4532X7S3A103K160KA (TDK Corporation) substitutes X7S temperature coefficient for X7R. X7S provides wider capacitance stability across temperature extremes (-55°C to 125°C) compared to X7R, suitable for applications with stricter temperature-dependent performance requirements. This part carries ±10% tolerance and is ROHS3 compliant.

Dimensional Considerations: All substitute parts maintain the 1812 (4532 metric) package footprint. Thickness variations range from 1.55mm to 2.80mm. The VPDR102W103M1GV001E (Johanson Dielectrics Inc.) exhibits maximum thickness (2.80mm) and should be verified for PCB assembly clearance in space-constrained designs.

Compliance and Availability: All listed substitutes maintain ROHS3 compliance, REACH Unaffected status, and unlimited moisture sensitivity rating (MSL 1). Inventory levels vary significantly; C4532X7R3A103K200KA (TDK) offers the highest stock position for immediate procurement.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 1812AC103MAT1A\SB with a part having ±10% tolerance?

A: Yes. Parts with ±10% tolerance (1812AC103KAT1A, C1812C103KDRAC7800, C4532X7R3A103K200KA) are direct upgrades. Tighter tolerance improves capacitance accuracy without affecting electrical performance or package compatibility. Verify circuit design does not require the wider tolerance band of the original ±20% specification.

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

A: Both X7R and X7S maintain capacitance stability across -55°C to 125°C operating range. X7S provides superior temperature stability with tighter capacitance variation limits, suitable for precision applications. X7R is standard for general-purpose use. The C4532X7S3A103K160KA offers X7S performance if circuit requirements demand enhanced temperature stability.

Q: Are all substitute parts pin-compatible with the original 1812AC103MAT1A\SB?

A: Yes. All listed substitutes use identical 1812 (4532 metric) surface-mount package with standard pad configuration. PCB footprints are interchangeable. Verify thickness clearance for compact assemblies, as thickness varies from 1.55mm to 2.80mm across the substitute list.

Q: Which substitute offers the best inventory availability?

A: The C4532X7R3A103K200KA (TDK Corporation) provides the highest stock level at 86839 pcs. This part maintains ±10% tolerance, X7R temperature coefficient, and standard 2.20mm thickness, making it suitable for immediate high-volume procurement.

Q: Can I use the VPDR102W103M1GV001E as a direct replacement?

A: Yes, electrically and functionally. The VPDR102W103M1GV001E maintains 10000 pF capacitance, ±20% tolerance, 1000V rating, and X7R temperature coefficient. However, its maximum thickness of 2.80mm exceeds the original 2.20mm specification. Verify PCB assembly clearance and reflow profile compatibility before implementation.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and REACH Unaffected status, meeting environmental and regulatory requirements equivalent to the primary part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message