12105C394MAT2A Equivalent & Substitute Parts

Part Overview

The 12105C394MAT2A is a 0.39 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 50V with X7R temperature coefficient in 1210 (3225 Metric) surface mount package. This component is designed for general purpose applications and is currently in active production status. Alternative equivalent parts may be required due to inventory availability, lead time considerations, or specific application requirements within the allowed electrical and mechanical parameters.

Substiute Parts

12105C394MAT2A

KYOCERA AVXIn Stock: 91812105C394MAT2A Datasheet

Current PartRFQ

C1210C394K5RAC7800

KEMETIn Stock: 4531C1210C394K5RAC7800 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 12105C394MAT2A is permissible with components meeting the following criteria:

Capacitance value must be 0.39 µF. Voltage rating must be 50V or higher. Temperature coefficient must be X7R. Package must be 1210 (3225 Metric) surface mount. Operating temperature range must encompass -55°C ~ 125°C. RoHS3 compliance and MSL 1 rating are required. Tolerance may vary within acceptable engineering limits for the application.

The substitute part C1210C394K5RAC7800 from KEMET meets all these criteria with improved tolerance specification (±10% versus ±20%).

Parameter Comparison

Engineering Selection Recommendations

Both the 12105C394MAT2A and C1210C394K5RAC7800 are active production components with full ROHS3 compliance and REACH unaffected status. The KEMET substitute offers tighter tolerance specification (±10%) compared to the original KYOCERA AVX part (±20%), which may provide improved circuit performance in applications requiring closer capacitance accuracy. Both components maintain identical electrical ratings, temperature performance, and physical footprint compatibility. Selection between these parts should be based on availability, lead time, and tolerance requirements specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can C1210C394K5RAC7800 be used as a direct replacement for 12105C394MAT2A?

A: Yes. Both components share identical capacitance (0.39 µF), voltage rating (50V), temperature coefficient (X7R), package (1210), and operating temperature range (-55°C ~ 125°C). The substitute has improved tolerance (±10% versus ±20%).

Q: What is the significance of the tolerance difference between these parts?

A: The KEMET substitute provides ±10% tolerance versus ±20% for the original. This means the KEMET part will maintain capacitance value within a tighter range, which may be beneficial for circuits requiring precise capacitance values.

Q: Are there physical compatibility concerns between these parts?

A: Both parts use the 1210 (3225 Metric) package with identical length and width (0.126" x 0.098"). The KEMET part has slightly greater maximum thickness (0.041" versus 0.037"), which must be verified against PCB assembly clearance specifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What applications are these capacitors suitable for?

A: The original part is specified for general purpose applications. The KEMET substitute is rated for bypass and decoupling applications, which are compatible with general purpose use cases.