Equivalent & Substitute Parts for 1206J2000393MXT

Part Overview

The 1206J2000393MXT is a 0.039 µF ceramic capacitor manufactured by Knowles Syfer, rated for 200V with X7R temperature coefficient in 1206 (3216 Metric) surface mount package. This part is Active status and ROHS3 compliant. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

1206J2000393MXT

Knowles SyferIn Stock: 10391206J2000393MXT Datasheet

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1206PC393KAT1A

KYOCERA AVXIn Stock: 47261206PC393KAT1A Datasheet

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C1206C393JARAC7800

KEMETIn Stock: 3258C1206C393JARAC7800 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for ceramic capacitors is determined by the following criteria:

Mandatory Matching Parameters:

• Capacitance value: 0.039 µF (exact match required)
• Temperature Coefficient: X7R (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Substitute parts may have equal or higher voltage rating than the main part (200V minimum)
• Tolerance: Substitute parts may have equal or tighter tolerance than the main part (±20% or better)
• Thickness: Substitute parts must fit within board assembly constraints

Both identified substitute parts meet all mandatory matching criteria and provide equal or improved electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are suitable replacements based on the following factors:

1206PC393KAT1A (KYOCERA AVX): This part provides a 50V voltage rating increase (250V vs. 200V) and improved tolerance specification (±10% vs. ±20%). The thickness reduction to 0.059" (1.50mm) is within typical board assembly clearances. All compliance certifications match the main part.

C1206C393JARAC7800 (KEMET): This part provides a 50V voltage rating increase (250V vs. 200V) and the tightest tolerance specification (±5% vs. ±20%). The significant thickness reduction to 0.035" (0.88mm) offers maximum board assembly flexibility. All compliance certifications match the main part.

Both substitute parts maintain Active product status and ROHS3 compliance. Selection between substitutes depends on tolerance requirements and available board assembly clearance for component thickness.

Frequently Asked Questions (FAQ)

Q: Can 1206PC393KAT1A or C1206C393JARAC7800 be used as direct replacements for 1206J2000393MXT?

A: Yes. Both substitute parts match all mandatory electrical and mechanical parameters: 0.039 µF capacitance, X7R temperature coefficient, 1206 package, and -55°C to 125°C operating range. The higher voltage ratings (250V) and improved tolerances provide equal or superior performance in the same circuit application.

Q: What is the significance of the tolerance differences (±20%, ±10%, ±5%)?

A: Tolerance specifies the allowable deviation from the nominal 0.039 µF capacitance value. The main part allows ±20% variation (0.0312 µF to 0.0468 µF). Substitute parts with ±10% or ±5% tolerance provide tighter capacitance control, which may be required for precision circuit applications. If the original design specifies ±20% tolerance, all three parts are functionally equivalent.

Q: Are there physical compatibility concerns with the different thickness specifications?

A: The substitute parts have reduced maximum thickness (0.059" and 0.035" respectively, compared to 0.063" for the main part). This reduction improves board assembly clearance and does not create compatibility issues. Verify available clearance in your specific PCB design if space constraints exist.

Q: Do all three parts have identical compliance certifications?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and have Moisture Sensitivity Level 1 (Unlimited). Compliance requirements are identical across all options.

Q: What is the basis for voltage rating substitution?

A: Ceramic capacitors with higher voltage ratings can safely replace lower-rated parts in the same circuit. The 250V-rated substitutes provide additional voltage margin compared to the 200V main part, with no negative impact on circuit performance.