1812HC221MAT1A\SB Equivalent & Substitute Parts

Part Overview

The 1812HC221MAT1A\SB is a 220 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 3000V (3kV) operation with X7R temperature coefficient characteristics. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package format is designed for general-purpose applications requiring high-voltage performance. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching critical electrical parameters: capacitance value, voltage rating, package format, and mounting type.

Substiute Parts

1812HC221MAT1A\SB

KYOCERA AVXIn Stock: 9131812HC221MAT1A\SB Datasheet

Current PartRFQ

C4532C0G3F221K200KA

TDK CorporationIn Stock: 40033C4532C0G3F221K200KA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812HC221MAT1A\SB is determined by strict equivalence in the following parameters:

• Capacitance value: 220 pF (exact match required)
• Voltage rating: 3000V (3kV) minimum (equal or higher acceptable)
• Package format: 1812 (4532 Metric) surface-mount configuration
• Mounting type: Surface Mount, MLCC
• Operating temperature range: -55°C ~ 125°C minimum coverage
• Regulatory compliance: RoHS3 and REACH status alignment

The substitute part C4532C0G3F221K200KA from TDK Corporation meets all critical substitution criteria. While the temperature coefficient differs (C0G/NP0 versus X7R), both coefficients provide stable performance across the specified operating temperature range and are acceptable for general-purpose high-voltage applications. The tolerance specification of the substitute (±10%) is tighter than the original part (±20%), providing improved capacitance accuracy without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812HC221MAT1A\SB and C4532C0G3F221K200KA are active production parts with full RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The TDK substitute part offers tighter capacitance tolerance (±10% versus ±20%), which may provide improved circuit performance in applications where capacitance accuracy is critical. Both parts maintain identical voltage ratings, operating temperature ranges, and moisture sensitivity classifications, ensuring functional equivalence in high-voltage general-purpose applications. Physical dimensions are within acceptable tolerance for standard 1812 package footprints, with the TDK part showing slightly reduced length and increased thickness. Selection between these parts should be based on availability, procurement lead times, and specific tolerance requirements of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the C4532C0G3F221K200KA substitute for the 1812HC221MAT1A\SB in all applications?

A: Yes, the C4532C0G3F221K200KA is a direct functional substitute. Both parts share identical capacitance (220 pF), voltage rating (3kV), package format (1812/4532 Metric), and operating temperature range (-55°C ~ 125°C). The substitute offers improved tolerance specification (±10% versus ±20%), which is beneficial for precision applications.

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

A: X7R and C0G (NP0) are both stable temperature coefficient classifications suitable for general-purpose applications across the -55°C ~ 125°C operating range. C0G provides superior temperature stability with near-zero capacitance change across temperature, while X7R allows slightly greater capacitance variation. For the specified operating range, both coefficients deliver acceptable performance in high-voltage circuits.

Q: Are there physical compatibility concerns with the substitute part?

A: The substitute part dimensions are within standard 1812 package specifications. The TDK part is slightly shorter (4.50mm versus 4.60mm length) and thicker (2.20mm versus 1.80mm), which may require verification against specific PCB layout constraints. Standard 1812 footprints accommodate both variants without modification.

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

A: Yes, both the 1812HC221MAT1A\SB and C4532C0G3F221K200KA are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component use in regulated markets.

Q: What inventory considerations apply to these parts?

A: The KYOCERA AVX part has 805 units in stock, while the TDK substitute has significantly higher availability at 39,968 units. For applications requiring immediate procurement or high-volume production, the TDK part may offer superior lead-time performance.