12105C155MAT2A Equivalent & Substitute Parts

Part Overview

The 12105C155MAT2A is a 1.5 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 50V operation with X7R temperature coefficient characteristics. This Surface Mount MLCC (Multilayer Ceramic Capacitor) in 1210 (3225 Metric) package is designed for general-purpose applications requiring stable capacitance across the -55°C to 125°C operating temperature range. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching or exceeding the electrical specifications (capacitance, voltage rating, tolerance, temperature coefficient) and mechanical compatibility (package size, mounting type, physical dimensions) of the original component.

Substiute Parts

12105C155MAT2A

KYOCERA AVXIn Stock: 104412105C155MAT2A Datasheet

Current PartRFQ

12101C155MAT2A

KYOCERA AVXIn Stock: 78812101C155MAT2A Datasheet

UpgradeRFQ

C3225X7R1H155M200AA

TDK CorporationIn Stock: 4120C3225X7R1H155M200AA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 12105C155MAT2A is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

• Capacitance: 1.5 µF (±20% tolerance acceptable)
• Temperature Coefficient: X7R (ensures stable performance across operating range)
• Voltage Rating: Must be ≥50V (higher ratings provide design margin)
• Operating Temperature Range: Must cover -55°C to 125°C

Mechanical Parameters (Must Match):

• Package / Case: 1210 (3225 Metric)
• Mounting Type: Surface Mount, MLCC
• Physical Dimensions: Compatible with 1210 footprint specifications

Compliance & Availability:

• RoHS3 Compliance required
• Moisture Sensitivity Level: MSL 1 acceptable
• Product Status: Active or equivalent alternatives considered

Based on these criteria, two substitute parts are identified:

1. 12101C155MAT2A (KYOCERA AVX) – Upgrade option with 100V rating
2. C3225X7R1H155M200AA (TDK Corporation) – Manufacturer-recommended equivalent with matching 50V rating

Parameter Comparison

Engineering Selection Recommendations

12101C155MAT2A (KYOCERA AVX) – Upgrade Substitute: This part is a direct upgrade option from the same manufacturer. It maintains identical capacitance (1.5 µF), tolerance (±20%), temperature coefficient (X7R), and package specifications while providing double the voltage rating (100V vs. 50V). The increased voltage rating offers additional design margin and reliability headroom for applications subject to voltage transients or future specification changes. Both parts share Active product status and ROHS3 compliance. This substitute is recommended for new designs requiring enhanced voltage performance within the same footprint.

C3225X7R1H155M200AA (TDK Corporation) – Manufacturer-Recommended Equivalent: This TDK part matches the electrical specifications of the original 12105C155MAT2A exactly (1.5 µF, 50V, X7R, ±20% tolerance) and is designated as a manufacturer-recommended equivalent. It maintains full compatibility with the 1210 (3225 Metric) package and mounting requirements. However, this part carries a "Not For New Designs" product status, indicating it is in mature or end-of-life phase. The maximum thickness specification is reduced (2.20mm vs. 2.79mm), which may provide PCB assembly advantages in space-constrained applications. This substitute is suitable for legacy system maintenance or replacement scenarios where design continuity is prioritized.

Frequently Asked Questions (FAQ)

Q: Can 12101C155MAT2A be used as a direct replacement for 12105C155MAT2A?

A: Yes. Both parts share identical capacitance (1.5 µF), tolerance (±20%), temperature coefficient (X7R), operating temperature range (-55°C to 125°C), and 1210 package specifications. The 12101C155MAT2A provides a higher voltage rating (100V vs. 50V), making it a compatible upgrade that maintains or exceeds all electrical and mechanical requirements.

Q: What is the difference between the KYOCERA AVX and TDK substitutes?

A: Both provide equivalent electrical performance at 1.5 µF, 50V, X7R. The primary differences are manufacturer identity and product lifecycle status. KYOCERA AVX 12101C155MAT2A is Active (recommended for new designs), while TDK C3225X7R1H155M200AA is marked "Not For New Designs" but offers reduced thickness (2.20mm vs. 2.79mm). Selection depends on design phase and supply chain strategy.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three parts (12105C155MAT2A, 12101C155MAT2A, and C3225X7R1H155M200AA) are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, provided the PCB layout accommodates the 1210 (3225 Metric) footprint. The TDK part has a reduced maximum thickness (2.20mm), which may require verification against PCB assembly clearance specifications, but all parts are mechanically compatible with standard 1210 mounting.

Q: Which substitute should be selected for new product designs?

A: For new designs, 12101C155MAT2A (KYOCERA AVX) is recommended due to its Active product status and higher voltage rating, providing design margin and long-term supply assurance. The TDK C3225X7R1H155M200AA is suitable for legacy system support or replacement applications only.