1812HC122MAT3A\SB Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 1812HC122MAT3A\SB is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 1200 pF, rated for 3000V (3kV), and featuring X7R temperature coefficient characteristics. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general-purpose high-voltage applications requiring stable performance across the -55°C to 125°C operating temperature range. The part is currently active in production with 981 pieces in stock inventory.

Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

1812HC122MAT3A\SB

KYOCERA AVXIn Stock: 10611812HC122MAT3A\SB Datasheet

Current PartRFQ

1812HC122KAT1A

KYOCERA AVXIn Stock: 7401812HC122KAT1A Datasheet

UpgradeRFQ

1812HC122MAT1A

KYOCERA AVXIn Stock: 11351812HC122MAT1A Datasheet

Parametric EquivalentRFQ

C1812C122JHRAC7800

KEMETIn Stock: 1718C1812C122JHRAC7800 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1812HC122MAT3A\SB are classified based on strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Capacitance: 1200 pF (exact match required)
• Voltage Rating: 3000V (3kV) minimum (exact match required)
• Temperature Coefficient: X7R (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Variation Parameters (Allowed Differences):

• Tolerance: ±20%, ±10%, or ±5% (tighter tolerances are acceptable upgrades)
• Packaging: Bulk or Tape & Reel (TR) (packaging format variation)
• Manufacturer: KYOCERA AVX or KEMET (different manufacturers with equivalent specifications)
• Physical Dimensions: Minor variations within 1812 package specification (length 4.50-4.60mm, thickness 1.80-2.20mm)
• Features: Additional features such as Low ESL are acceptable enhancements

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the 1812HC122MAT3A\SB within the specified parameter framework. Selection among equivalent options is determined by application-specific requirements and availability:

1812HC122KAT1A (KYOCERA AVX - Upgrade): Offers improved capacitance tolerance of ±10% compared to the main part's ±20%, providing tighter value control for precision applications. Identical electrical ratings, operating temperature range, and package dimensions. Supplied in Tape & Reel packaging with 651 units in stock.

1812HC122MAT1A (KYOCERA AVX - Parametric Equivalent): Maintains identical specifications to the main part including ±20% tolerance and bulk packaging format. Highest inventory availability at 1108 units. Direct substitution without performance variation.

C1812C122JHRAC7800 (KEMET - Upgrade): Provides the tightest capacitance tolerance at ±5% with additional Low ESL feature designation. Slightly reduced thickness (1.80mm vs. 2.20mm) and marginally shorter length (4.50mm vs. 4.60mm) remain within 1812 package specification. All electrical parameters and compliance certifications are equivalent. Highest inventory at 1679 units.

All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8532.24.0020.

Frequently Asked Questions (FAQ)

Q: Can 1812HC122KAT1A replace 1812HC122MAT3A\SB directly?

A: Yes. The 1812HC122KAT1A is a direct substitute with identical electrical specifications (1200 pF, 3000V, X7R, -55°C to 125°C). The ±10% tolerance is tighter than the main part's ±20%, making it suitable for applications requiring improved capacitance accuracy. Physical dimensions and package type are identical.

Q: What is the difference between the KYOCERA AVX and KEMET options?

A: Both manufacturers provide equivalent electrical performance at 1200 pF, 3000V, X7R. The KEMET C1812C122JHRAC7800 offers ±5% tolerance (superior to both KYOCERA options) and includes Low ESL characteristics. Physical dimensions vary slightly: KEMET is 4.50mm length and 1.80mm thickness versus KYOCERA at 4.60mm and 2.20mm. Both remain within 1812 package specification and are mechanically compatible.

Q: Are there packaging format differences between substitutes?

A: The main part 1812HC122MAT3A\SB uses bulk packaging. Substitute 1812HC122MAT1A also uses bulk packaging. Upgrades 1812HC122KAT1A and C1812C122JHRAC7800 are supplied in Tape & Reel (TR) format. Both packaging formats are compatible with standard surface-mount assembly processes.

Q: Which substitute should I select for high-precision applications?

A: The C1812C122JHRAC7800 (KEMET) with ±5% tolerance provides the tightest capacitance control. If KYOCERA AVX sourcing is required, the 1812HC122KAT1A offers ±10% tolerance as an intermediate option between the main part's ±20% and KEMET's ±5%.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All listed parts are ROHS3 compliant and REACH unaffected, matching the main part's compliance status. All are classified under ECCN EAR99 with HTSUS code 8532.24.0020.

Q: Can I use C1812C122JHRAC7800 in space-constrained PCB layouts?

A: Yes. The C1812C122JHRAC7800 has a reduced thickness of 1.80mm compared to the main part's 2.20mm, making it advantageous for applications with height constraints. Length is marginally shorter at 4.50mm versus 4.60mm. Both dimensions remain within 1812 package specification and are mechanically compatible with standard 1812 footprints.