KYOCERA AVX 1812HC681MAT1A High Voltage Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 1812HC681MAT1A is a high voltage ceramic capacitor rated at 680 pF with 3000V (3kV) operating voltage and X7R temperature coefficient. This surface mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package is designed for general purpose applications requiring high voltage performance. The part maintains active product status with 674 units in current inventory. Substitute parts are identified to address packaging preferences, tolerance requirements, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

1812HC681MAT1A\SB

KYOCERA AVXIn Stock: 7241812HC681MAT1A\SB Datasheet

Current PartRFQ

1812HC681KAT1A

KYOCERA AVXIn Stock: 28971812HC681KAT1A Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812HC681MAT1A is determined by the following critical parameters:

• Capacitance Value: Must be 680 pF (exact match required)
• Voltage Rating: Must be 3000V (3kV) or higher
• Temperature Coefficient: Must be X7R (ensures stable performance across operating temperature range)
• Package / Case: Must be 1812 (4532 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount, MLCC
• Physical Dimensions: Must match 0.181" L x 0.126" W (4.60mm x 3.20mm) and 0.087" (2.20mm) maximum thickness
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The identified substitute part 1812HC681KAT1A meets all critical parameters with the exception of tolerance specification (±10% versus ±20%), which represents an upgrade in precision capability while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 1812HC681MAT1A and 1812HC681KAT1A are active products manufactured by KYOCERA AVX with full ROHS3 compliance and MSL 1 rating. The primary distinction between these parts is tolerance specification and packaging format.

The 1812HC681MAT1A provides ±20% tolerance in bulk packaging, suitable for applications where standard tolerance specifications are acceptable. The 1812HC681KAT1A offers improved tolerance at ±10% in Tape & Reel packaging, providing tighter capacitance control for precision-critical applications while maintaining identical electrical performance and physical compatibility.

Selection between these parts should be based on tolerance requirements for the specific application circuit and preferred packaging format for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the 1812HC681KAT1A replace the 1812HC681MAT1A in existing designs?

A: Yes. Both parts share identical capacitance value (680 pF), voltage rating (3000V), temperature coefficient (X7R), package dimensions (1812/4532 Metric), and compliance certifications. The substitute part features improved tolerance (±10% versus ±20%), which is a functional upgrade. Packaging differs (Tape & Reel versus bulk), which may affect procurement and assembly processes but not electrical performance.

Q: What are the critical parameters that must match for substitution?

A: Capacitance value, voltage rating, temperature coefficient, package type, physical dimensions, and compliance certifications must remain identical. Tolerance and packaging format may vary based on application requirements and manufacturing preferences.

Q: Are both parts suitable for high voltage applications?

A: Yes. Both parts are rated for 3000V (3kV) operation with X7R temperature stability across -55°C to 125°C operating range, meeting high voltage application requirements.

Q: Does the ±10% tolerance of the substitute part affect circuit performance?

A: The tighter tolerance of the 1812HC681KAT1A provides improved capacitance accuracy compared to the ±20% specification of the main part. This represents enhanced performance for applications requiring precise capacitance values.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Bulk packaging (1812HC681MAT1A) is suitable for manual handling and smaller volume requirements. Tape & Reel packaging (1812HC681KAT1A) is optimized for automated assembly processes and higher volume production. Both formats contain the same electronic component.