Equivalent & Substitute Parts for 12063C394MAT2A

Part Overview

The 12063C394MAT2A is a 0.39 µF ceramic capacitor manufactured by KYOCERA AVX, rated for 25V operation with X7R temperature coefficient in 1206 (3216 Metric) surface mount package. This part is actively produced and widely used in general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. Substitute parts are identified to provide design flexibility, improved tolerance specifications, higher voltage ratings, or alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

12063C394MAT2A

KYOCERA AVXIn Stock: 123112063C394MAT2A Datasheet

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C1206C394J3RAC7800

KEMETIn Stock: 4100C1206C394J3RAC7800 Datasheet

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C1206C394K3RAC7800

KEMETIn Stock: 7270C1206C394K3RAC7800 Datasheet

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C1206C394K5RAC7800

KEMETIn Stock: 11546C1206C394K5RAC7800 Datasheet

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GRM31MR71H394KA01L

Murata ElectronicsIn Stock: 16784GRM31MR71H394KA01L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 12063C394MAT2A is determined by the following criteria:

Mandatory Parameters (Must Match):

• Capacitance: 0.39 µF
• Temperature Coefficient: X7R
• Package / Case: 1206 (3216 Metric)
• Mounting Type: Surface Mount, MLCC
• Operating Temperature Range: -55°C to 125°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Tolerance: May be tighter (±5%, ±10%) than the original ±20%
• Voltage Rating: May be equal (25V) or higher (50V)
• Thickness: May vary within mechanical constraints
• Manufacturer: Different manufacturers acceptable if all mandatory parameters match

All four substitute parts meet these criteria and are valid replacements for the 12063C394MAT2A.

Parameter Comparison

Engineering Selection Recommendations

C1206C394J3RAC7800 (KEMET): This substitute offers the tightest tolerance specification at ±5%, maintaining the 25V voltage rating of the original part. Suitable for applications requiring improved capacitance accuracy. Product status is Active.

C1206C394K3RAC7800 (KEMET): This substitute provides ±10% tolerance with 25V rating, balancing tolerance improvement over the original ±20% specification while maintaining voltage compatibility. Product status is Active.

C1206C394K5RAC7800 (KEMET): This substitute increases the voltage rating to 50V while maintaining ±10% tolerance and 0.39 µF capacitance. Suitable for applications requiring higher voltage margin or where 50V rated components are standardized. Product status is Active.

GRM31MR71H394KA01L (Murata Electronics): This substitute provides 50V rating with ±10% tolerance in the same 1206 package. Product status is listed as Not For New Designs; this part should be used only in legacy designs or where existing inventory must be maintained.

Frequently Asked Questions (FAQ)

Q: Can I use a 50V rated capacitor in place of the 25V rated 12063C394MAT2A?

A: Yes. The C1206C394K5RAC7800 and GRM31MR71H394KA01L both provide 50V ratings and are electrically compatible. Higher voltage ratings provide additional safety margin in the circuit. All other electrical parameters remain equivalent.

Q: What is the difference between the KEMET substitutes?

A: The three KEMET alternatives differ in tolerance and voltage rating. C1206C394J3RAC7800 offers ±5% tolerance at 25V. C1206C394K3RAC7800 offers ±10% tolerance at 25V. C1206C394K5RAC7800 offers ±10% tolerance at 50V. Selection depends on circuit requirements for capacitance accuracy and voltage headroom.

Q: Are there physical size differences between these parts?

A: All parts share the same 1206 (3216 Metric) package footprint of 0.126" L x 0.063" W. Thickness varies slightly: KEMET parts are 0.035" to 0.039", the original is 0.050", and the Murata part is 0.049". These thickness variations are within typical PCB assembly tolerances and do not affect mounting compatibility.

Q: Why is the GRM31MR71H394KA01L marked "Not For New Designs"?

A: This Murata part carries a legacy product status designation. It remains functionally equivalent and electrically compatible but should not be selected for new circuit designs. Use this part only when maintaining existing designs or consuming existing inventory.

Q: Do all substitutes maintain the same moisture sensitivity level?

A: Yes. All substitute parts maintain MSL 1 (Unlimited), identical to the original 12063C394MAT2A. No special moisture handling or baking procedures are required for any of these parts.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All four substitute parts are ROHS3 compliant, matching the compliance status of the original part.