1812AA151MAT1A Equivalent & Substitute Parts

Part Overview

The 1812AA151MAT1A is a 150 pF ±20% 1000V (1kV) ceramic capacitor manufactured by KYOCERA AVX in the 1812 (4532 Metric) surface mount package. This high-voltage C0G/NP0 temperature coefficient capacitor is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and maintains active product status. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity.

Key Parameters

Parameter	Value
Capacitance	150 pF
Tolerance	±20%
Voltage Rating	1000V (1kV)
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C to 125°C
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount, MLCC
Physical Dimensions	0.181" L x 0.126" W (4.60mm x 3.20mm)
Thickness (Max)	0.057" (1.45mm)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Substitution Parameters:

Capacitance value: 150 pF (exact match required)
Temperature coefficient: C0G/NP0 (exact match required)
Package / Case: 1812 (4532 Metric) (exact match required)
Mounting type: Surface Mount, MLCC (exact match required)
Operating temperature range: -55°C to 125°C (exact match required)
RoHS and MSL compliance: ROHS3 Compliant, MSL 1 (exact match required)

Secondary Substitution Parameters (Allowable Variations):

Tolerance: ±20%, ±10%, ±5% (tighter tolerances are acceptable upgrades)
Voltage rating: 1000V, 2000V, 3000V (higher voltage ratings are acceptable upgrades)
Manufacturer: KYOCERA AVX, TDK Corporation (cross-manufacturer substitution permitted)

Substitute parts are grouped into three categories: tolerance upgrades (tighter tolerance specifications), voltage upgrades (higher voltage ratings), and cross-manufacturer equivalents. All substitutes maintain identical capacitance, temperature coefficient, package dimensions, and compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Thickness (Max)	Inventory Status	Packaging
1812AA151MAT1A	KYOCERA AVX	150 pF	±20%	1000V	0.057" (1.45mm)	874 Pcs	Bulk
1812AA151JAT1A	KYOCERA AVX	150 pF	±5%	1000V	0.057" (1.45mm)	864 Pcs	Tape & Reel
1812AA151KAT1A	KYOCERA AVX	150 pF	±10%	1000V	0.057" (1.45mm)	3300 Pcs	Tape & Reel
1812AA151KAT1A\SB	KYOCERA AVX	150 pF	±10%	1000V	0.057" (1.45mm)	710 Pcs	Tape & Reel
1812GA151JAT1A	KYOCERA AVX	150 pF	±5%	2000V	0.087" (2.20mm)	2408 Pcs	Tape & Reel
1812GA151KAT1A	KYOCERA AVX	150 pF	±10%	2000V	0.087" (2.20mm)	1124 Pcs	Tape & Reel
C4532C0G3F151K160KA	TDK Corporation	150 pF	±10%	3000V	0.071" (1.80mm)	24949 Pcs	Tape & Reel

Engineering Selection Recommendations

Tolerance Upgrade Path (1000V Rating): The 1812AA151KAT1A (±10% tolerance) and 1812AA151JAT1A (±5% tolerance) provide tighter capacitance tolerances while maintaining the 1000V voltage rating and identical physical footprint. These parts are suitable for applications requiring improved capacitance accuracy. The 1812AA151KAT1A offers the highest inventory availability (3300 pcs) among 1000V options.

Voltage Upgrade Path (2000V Rating): The 1812GA151KAT1A (±10% tolerance, 2000V) and 1812GA151JAT1A (±5% tolerance, 2000V) provide doubled voltage rating capability. These parts feature increased thickness (0.087" vs. 0.057") due to higher voltage dielectric requirements. Physical footprint remains compatible with 1812 (4532 Metric) package specifications. Suitable for high-voltage circuit applications.

Cross-Manufacturer Equivalent (3000V Rating): The C4532C0G3F151K160KA from TDK Corporation provides the highest voltage rating (3000V) with ±10% tolerance. Thickness is 0.071" (1.80mm), intermediate between 1000V and 2000V KYOCERA AVX variants. Largest inventory availability (24949 pcs) supports high-volume procurement. Maintains ROHS3 compliance and MSL 1 rating.

Manufacturer Recommended Equivalent: The 1812AA151KAT1A\SB is the manufacturer-recommended equivalent, offering ±10% tolerance at 1000V rating with identical physical dimensions to the main part (0.057" thickness). This part maintains full compatibility with existing designs.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, C0G/NP0 temperature coefficient, and -55°C to 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I substitute a higher voltage-rated part (2000V or 3000V) for the 1000V 1812AA151MAT1A?

A: Yes. Higher voltage ratings are acceptable substitutes provided all other parameters remain constant: 150 pF capacitance, C0G/NP0 temperature coefficient, 1812 package, and ROHS3/MSL 1 compliance. Note that 2000V and 3000V variants have increased thickness (0.087" and 0.071" respectively) compared to the 1000V part (0.057"). Verify PCB layout clearance before substitution.

Q: What is the difference between ±20%, ±10%, and ±5% tolerance parts?

A: Tolerance specifies the allowable deviation of actual capacitance from the nominal 150 pF value. The ±20% part (1812AA151MAT1A) allows capacitance between 120 pF and 180 pF. The ±10% part allows 135 pF to 165 pF. The ±5% part allows 142.5 pF to 157.5 pF. Tighter tolerances (±5%, ±10%) are suitable for precision circuits; looser tolerances (±20%) are acceptable for general-purpose applications.

Q: Are KYOCERA AVX and TDK Corporation parts directly interchangeable?

A: Yes, provided capacitance, tolerance, voltage rating, package, and compliance specifications match. The C4532C0G3F151K160KA (TDK) is a direct cross-manufacturer equivalent to KYOCERA AVX parts with identical electrical performance and package footprint. Verify manufacturer datasheets for any application-specific requirements.

Q: What does the "\SB" designation in 1812AA151KAT1A\SB indicate?

A: The "\SB" suffix indicates a specific packaging or manufacturing variant. The part maintains identical electrical specifications and physical dimensions to the base 1812AA151KAT1A part. Consult manufacturer documentation for variant-specific details if required.

Q: Can I use the Tape & Reel packaged parts as direct replacements for the bulk-packaged main part?

A: Yes. Tape & Reel packaging is a standard distribution format for surface mount components and does not affect electrical performance or physical compatibility. The component itself is identical; only the packaging method differs. Tape & Reel format is standard for automated assembly processes.

Q: Which substitute part offers the best inventory availability?

A: The C4532C0G3F151K160KA (TDK Corporation, 3000V rating) has the highest inventory availability at 24949 pcs. Among KYOCERA AVX parts, the 1812AA151KAT1A (1000V, ±10% tolerance) offers the highest availability at 3300 pcs.

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