1812CC333MAT3A\SB Equivalent & Substitute Parts

Part Overview

The 1812CC333MAT3A\SB is a 0.033 µF ceramic capacitor rated at 630V with X7R temperature coefficient, manufactured by KYOCERA AVX. This surface mount multilayer ceramic capacitor (MLCC) in 1812 (4532 metric) package is designed for general purpose applications requiring high voltage performance. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to address inventory availability, tolerance improvements, or voltage rating upgrades while maintaining core electrical and mechanical compatibility.

Substiute Parts

1812CC333MAT3A\SB

KYOCERA AVXIn Stock: 10281812CC333MAT3A\SB Datasheet

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1812CC333KAT1A

KYOCERA AVXIn Stock: 32561812CC333KAT1A Datasheet

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GRM43DR73A333KW01L

Murata ElectronicsIn Stock: 2959GRM43DR73A333KW01L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812CC333MAT3A\SB is determined by the following critical parameters:

• Capacitance Value: Must be 0.033 µF (exact match required)
• Voltage Rating: Must be equal to or greater than 630V
• Temperature Coefficient: Must be X7R (ensures stable capacitance across operating temperature range)
• Package / Case: Must be 1812 (4532 Metric) for PCB footprint compatibility
• Mounting Type: Must be Surface Mount, MLCC
• RoHS & Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Two substitute parts meet these criteria:

1. 1812CC333KAT1A (KYOCERA AVX): Same manufacturer, same voltage rating (630V), improved tolerance (±10% vs ±20%), identical package and compliance specifications.

2. GRM43DR73A333KW01L (Murata Electronics): Different manufacturer, elevated voltage rating (1000V vs 630V), improved tolerance (±10%), same package family with minor dimensional variation in thickness, identical compliance specifications.

Parameter Comparison

Engineering Selection Recommendations

1812CC333KAT1A is a direct substitute with identical electrical and mechanical specifications to the main part, with the advantage of tighter tolerance (±10% vs ±20%). Both parts are manufactured by KYOCERA AVX, carry active product status, and maintain full ROHS3 compliance with MSL 1 rating. This substitute is suitable for applications where the original part is unavailable and tolerance improvement is acceptable.

GRM43DR73A333KW01L is a cross-manufacturer substitute from Murata Electronics with elevated voltage rating (1000V vs 630V). This part maintains identical capacitance, temperature coefficient, and compliance certifications. The thickness increases from 1.80mm to 2.20mm, and length decreases slightly from 4.60mm to 4.50mm. This substitute is suitable for applications where higher voltage margin is required or where Murata supply chain availability is preferred. PCB layout verification is necessary to confirm the dimensional changes do not conflict with board design constraints.

Frequently Asked Questions (FAQ)

Q: Can 1812CC333KAT1A replace 1812CC333MAT3A\SB in all applications?

A: Yes. Both parts share identical capacitance (0.033 µF), voltage rating (630V), temperature coefficient (X7R), package (1812/4532 metric), and compliance specifications. The substitute features improved tolerance (±10% vs ±20%), making it functionally equivalent or superior for general purpose applications.

Q: What is the key difference between the two substitute parts?

A: 1812CC333KAT1A maintains the original 630V rating with improved tolerance. GRM43DR73A333KW01L provides elevated voltage rating (1000V) for applications requiring higher voltage margin, but introduces dimensional changes: thickness increases to 2.20mm and length decreases to 4.50mm.

Q: Are there PCB layout considerations when using GRM43DR73A333KW01L?

A: Yes. The Murata part has different dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm) versus the original 0.181" L x 0.126" W (4.60mm x 3.20mm), and increased thickness of 0.087" (2.20mm) versus 0.071" (1.80mm). Verify that the PCB footprint and clearance specifications accommodate these dimensional changes before implementation.

Q: Do all substitute parts maintain RoHS and MSL compliance?

A: Yes. Both substitute parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), matching the original part's compliance profile.

Q: Which substitute should be selected for new designs?

A: Selection depends on application requirements. For direct replacement with improved tolerance, use 1812CC333KAT1A. For applications requiring higher voltage margin or where Murata supply is preferred, use GRM43DR73A333KW01L, provided PCB layout accommodates the dimensional differences.