1812SC221KAT1A\SB Equivalent & Substitute Parts

Part Overview

The 1812SC221KAT1A\SB is a 220 pF ceramic capacitor manufactured by KYOCERA AVX, rated for 1500V (1.5kV) operation with X7R temperature coefficient characteristics. This surface mount multilayer ceramic capacitor (MLCC) in 1812 (4532 metric) package format is designed for general-purpose high-voltage applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part maintains Active product status with 953 units currently in stock. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and performance optimization options for applications where voltage ratings, temperature stability, or availability considerations warrant component substitution.

Substiute Parts

1812SC221KAT1A\SB

KYOCERA AVXIn Stock: 10241812SC221KAT1A\SB Datasheet

Current PartRFQ

C4532C0G3F221K200KA

TDK CorporationIn Stock: 40033C4532C0G3F221K200KA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812SC221KAT1A\SB is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Capacitance value: 220 pF (exact match required)
• Tolerance: ±10% (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 (minimum requirement)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 1500V (1.5kV)
• Temperature Coefficient: X7R or C0G/NP0 (both acceptable for general-purpose applications)
• Physical dimensions: Minor variations within package specification tolerance

The identified substitute part C4532C0G3F221K200KA meets all mandatory compatibility requirements while offering an elevated voltage rating of 3000V (3kV) and C0G temperature coefficient, providing enhanced performance margin for high-voltage circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812SC221KAT1A\SB and C4532C0G3F221K200KA are Active product status components with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications.

The C4532C0G3F221K200KA substitute offers a 2x voltage rating advantage (3kV vs 1.5kV) while maintaining identical capacitance and tolerance specifications. The C0G/NP0 temperature coefficient provides superior capacitance stability across temperature extremes compared to X7R characteristics. Physical dimensions remain compatible within the 1812 package specification, with maximum thickness increasing from 1.80mm to 2.20mm—a variation that remains within standard PCB assembly tolerances for surface mount components.

Selection between these parts should be based on circuit voltage requirements, available board space for the thickness differential, and supply chain availability. The substitute part is suitable for direct replacement in applications where the original 1.5kV rating provides design margin, or where enhanced voltage performance is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the C4532C0G3F221K200KA directly replace the 1812SC221KAT1A\SB in existing designs?

A: Yes, for applications operating at or below 1500V. The substitute maintains identical capacitance (220 pF), tolerance (±10%), and package format (1812/4532 metric). The higher 3kV voltage rating and C0G temperature coefficient provide enhanced performance margins. Verify PCB layout accommodates the maximum thickness increase of 0.40mm (1.80mm to 2.20mm).

Q: What is the difference between X7R and C0G temperature coefficients?

A: X7R provides ±15% capacitance variation across -55°C to 125°C operating range. C0G/NP0 provides ±30 ppm/°C stability, delivering superior capacitance retention across temperature extremes. Both are acceptable for general-purpose applications; C0G is preferred for precision circuits requiring minimal capacitance drift.

Q: Are there physical compatibility concerns with the thickness difference?

A: The substitute part maximum thickness is 2.20mm versus 1.80mm for the original. This 0.40mm increase remains within standard surface mount assembly tolerances and PCB design margins. Verify clearance with adjacent components and solder reflow profiles.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification with identical HTSUS codes (8532.24.0020), ensuring equivalent regulatory status for procurement and deployment.

Q: What inventory considerations apply to these parts?

A: The original 1812SC221KAT1A\SB has 953 units in stock. The substitute C4532C0G3F221K200KA has significantly higher availability at 39,968 units in stock, providing supply chain flexibility for volume production requirements.