1812AC100KAT1A Equivalent & Substitute Parts

Part Overview

The 1812AC100KAT1A is a high-voltage ceramic capacitor manufactured by KYOCERA AVX with a capacitance of 10 pF, rated voltage of 1000V (1kV), and X7R temperature coefficient. This component is classified as Active and is ROHS3 compliant. The part is available in Surface Mount MLCC packaging with 1812 (4532 Metric) form factor dimensions of 4.60mm × 3.20mm × 1.80mm maximum thickness.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified application requirements while accommodating variations in voltage rating, temperature coefficient, tolerance, and physical dimensions that remain compatible with the circuit design and PCB layout constraints.

Substiute Parts

1812AC100KAT1A\SB

KYOCERA AVXIn Stock: 9871812AC100KAT1A\SB Datasheet

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1812HA100JAT1A

KYOCERA AVXIn Stock: 11511812HA100JAT1A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1812AC100KAT1A is determined by the following electrical and mechanical parameters:

Critical Parameters (Must Match or Exceed):

• Capacitance: 10 pF (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)
• RoHS Status: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (handling requirement)

Parameters Allowing Variation:

• Voltage - Rated: Substitute parts may have equal or higher voltage ratings
• Temperature Coefficient: Substitute parts may have different temperature coefficients (X7R, C0G/NP0) provided operating temperature range is maintained
• Tolerance: Substitute parts may have tighter tolerance specifications
• Thickness: Substitute parts may have reduced maximum thickness

The identified substitute part 1812HA100JAT1A maintains all critical parameters while providing enhanced voltage rating (3000V vs 1000V), improved tolerance (±5% vs ±10%), and superior temperature stability through C0G/NP0 coefficient, with reduced thickness (1.45mm vs 1.80mm).

Parameter Comparison

Engineering Selection Recommendations

Both the 1812AC100KAT1A and 1812HA100JAT1A are Active products manufactured by KYOCERA AVX and maintain full ROHS3 compliance and REACH Unaffected status. The substitute part 1812HA100JAT1A is suitable for applications where the original part specification can accommodate the following differences:

• Higher voltage rating (3000V vs 1000V) provides additional design margin and is backward compatible with 1000V circuit requirements
• Tighter tolerance (±5% vs ±10%) improves capacitance accuracy
• C0G/NP0 temperature coefficient provides superior temperature stability compared to X7R
• Reduced thickness (1.45mm vs 1.80mm) offers improved PCB layout flexibility

Both parts share identical footprint dimensions (4.60mm × 3.20mm), identical capacitance value (10 pF), identical operating temperature range (-55°C ~ 125°C), and identical moisture sensitivity classification (MSL 1). Substitution is mechanically and electrically compatible for direct replacement in Surface Mount MLCC applications.

Frequently Asked Questions (FAQ)

Q: Can 1812HA100JAT1A directly replace 1812AC100KAT1A in existing designs?

A: Yes. Both parts share identical capacitance (10 pF), package form factor (1812/4532 Metric), footprint dimensions (4.60mm × 3.20mm), operating temperature range (-55°C ~ 125°C), and moisture sensitivity classification (MSL 1). The substitute part provides higher voltage rating and improved tolerance, making it electrically and mechanically compatible for direct PCB replacement.

Q: What are the key differences between these two parts?

A: The primary differences are voltage rating (1812HA100JAT1A rated at 3000V vs 1812AC100KAT1A at 1000V), tolerance specification (±5% vs ±10%), temperature coefficient (C0G/NP0 vs X7R), and maximum thickness (1.45mm vs 1.80mm). All other electrical and mechanical parameters remain equivalent.

Q: Does the different temperature coefficient affect circuit performance?

A: The C0G/NP0 temperature coefficient of the substitute part provides superior temperature stability with minimal capacitance variation across the operating temperature range (-55°C ~ 125°C). This is generally advantageous for precision applications. Both coefficients support the identical operating temperature range.

Q: Are there packaging differences between these parts?

A: The main part is supplied in standard packaging, while the substitute part is supplied in Tape & Reel (TR) format. Both maintain identical component dimensions and footprint specifications for PCB assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both 1812AC100KAT1A and 1812HA100JAT1A are ROHS3 compliant, REACH Unaffected, classified as EAR99, and maintain MSL 1 (Unlimited) moisture sensitivity rating.