12103C563KAT2A Ceramic Capacitor - Equivalent & Substitute Parts

Part Overview

The 12103C563KAT2A is a 0.056 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 25V with X7R temperature coefficient in 1210 (3225 Metric) surface mount package. This component is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching capacitance, tolerance, package dimensions, and temperature coefficient while allowing voltage rating variations to accommodate different circuit requirements.

Substiute Parts

12103C563KAT2A

KYOCERA AVXIn Stock: 90612103C563KAT2A Datasheet

Current PartRFQ

12101C563KAT2A

KYOCERA AVXIn Stock: 103612101C563KAT2A Datasheet

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12105C563KAT2A

KYOCERA AVXIn Stock: 100512105C563KAT2A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 12103C563KAT2A are qualified based on the following criteria:

Fixed Parameters (Must Match):

• Capacitance: 0.056 µF
• Tolerance: ±10%
• Temperature Coefficient: X7R
• Operating Temperature Range: -55°C ~ 125°C
• Package / Case: 1210 (3225 Metric)
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Thickness (Max): 0.037" (0.94mm)
• Mounting Type: Surface Mount, MLCC
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameter (Allowed to Differ):

• Voltage - Rated: Substitutes may have equal or higher voltage ratings than the original 25V specification

The 12103C563KAT2A can be substituted with parts having higher voltage ratings (50V or 100V) in applications where the circuit voltage does not exceed the original 25V specification, as higher-rated components maintain all other electrical and mechanical characteristics while providing additional voltage margin.

Parameter Comparison

Engineering Selection Recommendations

All three parts—12103C563KAT2A, 12105C563KAT2A, and 12101C563KAT2A—are active production components from KYOCERA AVX with ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts depends on circuit voltage requirements:

• 12103C563KAT2A (25V): Use when circuit voltage does not exceed 25V and component availability or cost is optimized for this rating.
• 12105C563KAT2A (50V): Use when circuit voltage ranges from 26V to 50V, or when additional voltage margin above 25V is required for reliability.
• 12101C563KAT2A (100V): Use when circuit voltage ranges from 51V to 100V, or when maximum voltage margin is required for high-reliability applications.

All substitutes maintain identical capacitance, tolerance, temperature coefficient, operating temperature range, package dimensions, and compliance certifications. Physical board layout compatibility is guaranteed across all three parts due to matching 1210 package specifications.

Frequently Asked Questions (FAQ)

Q: Can 12105C563KAT2A or 12101C563KAT2A be used as direct replacements for 12103C563KAT2A?

A: Yes, both higher-voltage rated parts are direct substitutes for the 12103C563KAT2A in applications where the circuit voltage does not exceed 25V. The higher voltage ratings provide additional safety margin without affecting capacitance, tolerance, temperature stability, or physical dimensions.

Q: What is the difference between these three parts?

A: The only difference is the voltage rating: 12103C563KAT2A is rated 25V, 12105C563KAT2A is rated 50V, and 12101C563KAT2A is rated 100V. All other electrical and mechanical specifications are identical.

Q: Are these parts interchangeable on the PCB?

A: Yes. All three parts use the same 1210 (3225 Metric) surface mount package with identical physical dimensions (0.126" L x 0.098" W x 0.037" max thickness). No PCB layout modifications are required for substitution.

Q: Which part should I select for a new design?

A: Select the part with the lowest voltage rating that exceeds your circuit's maximum operating voltage. This optimizes cost and component availability while maintaining design margin. If circuit voltage is 25V or below, 12103C563KAT2A is appropriate. If circuit voltage is 26-50V, use 12105C563KAT2A. If circuit voltage is 51-100V, use 12101C563KAT2A.

Q: Do all three parts have the same compliance certifications?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, have MSL 1 (unlimited moisture sensitivity), and are classified as EAR99 for export control purposes.

Q: Can I use a higher-voltage rated part in a lower-voltage circuit?

A: Yes. Using a higher-voltage rated capacitor in a lower-voltage circuit is a standard engineering practice that provides additional voltage margin and does not degrade performance.