KYOCERA AVX 08055U121GAT2A Equivalent & Substitute Parts

Part Overview

The KYOCERA AVX 08055U121GAT2A is a 120 pF ceramic capacitor with C0G/NP0 temperature coefficient, rated for 50V operation in a 0805 (2012 Metric) surface mount package. This component is designed for RF, microwave, and high-frequency applications requiring ultra-low ESR performance. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to address higher voltage requirements or improved tolerance specifications while maintaining core electrical and mechanical compatibility.

Substiute Parts

08055U121GAT2A

KYOCERA AVXIn Stock: 102008055U121GAT2A Datasheet

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08051U121FAT2A

KYOCERA AVXIn Stock: 504808051U121FAT2A Datasheet

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08052U121GAT2A

KYOCERA AVXIn Stock: 485108052U121GAT2A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 08055U121GAT2A is determined by the following criteria:

Fixed Parameters (Must Match):

• Capacitance: 120 pF
• Temperature Coefficient: C0G, NP0
• Package / Case: 0805 (2012 Metric)
• Mounting Type: Surface Mount, MLCC
• Operating Temperature Range: -55°C ~ 125°C
• Physical Dimensions: 0.079" L x 0.049" W (2.01mm x 1.25mm)
• Thickness (Max): 0.045" (1.15mm)

Variable Parameters (Allowed to Differ):

• Voltage - Rated: May be equal or higher than 50V
• Tolerance: May be equal or tighter than ±2%

The identified substitute parts maintain identical capacitance, temperature coefficient, and package specifications while offering enhanced voltage ratings or improved tolerance characteristics. All substitutes are KYOCERA AVX products from the U series with active production status and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

08051U121FAT2A (100V, ±1% Tolerance): Select this substitute when circuit design requires higher voltage margin or improved capacitance tolerance. The 100V rating provides 2x voltage headroom over the main part while maintaining identical physical footprint and thermal characteristics. The ±1% tolerance specification offers tighter capacitance control compared to the ±2% main part. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

08052U121GAT2A (200V, ±2% Tolerance): Select this substitute for applications requiring maximum voltage stress protection. The 200V rating provides 4x voltage headroom and is suitable for high-voltage RF and microwave circuits. Tolerance specification remains ±2%, matching the main part. All compliance certifications are equivalent.

Both substitutes are active production items with unlimited MSL rating and are suitable for direct replacement in 0805 surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can 08051U121FAT2A or 08052U121GAT2A be used as direct replacements for 08055U121GAT2A?

A: Yes. Both substitutes maintain identical capacitance (120 pF), temperature coefficient (C0G/NP0), package (0805), and physical dimensions. They are electrically and mechanically compatible for PCB assembly and soldering processes.

Q: What is the difference between the three parts?

A: The main difference is voltage rating and tolerance. The 08055U121GAT2A is rated 50V with ±2% tolerance. The 08051U121FAT2A is rated 100V with ±1% tolerance. The 08052U121GAT2A is rated 200V with ±2% tolerance. All other specifications are identical.

Q: When should I use the higher voltage-rated substitutes?

A: Use higher voltage-rated parts when your circuit operates at voltages approaching or exceeding the main part's 50V rating, or when design margins require additional voltage stress protection. Higher voltage ratings do not negatively impact performance in lower voltage applications.

Q: Are there any package or footprint differences between these parts?

A: No. All three parts use the 0805 (2012 Metric) package with identical physical dimensions: 0.079" L x 0.049" W (2.01mm x 1.25mm) and 0.045" maximum thickness. They are footprint-compatible for PCB assembly.

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

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

Q: What is the significance of the ±1% tolerance in 08051U121FAT2A?

A: The ±1% tolerance provides tighter capacitance control compared to ±2%. This is beneficial in precision RF and microwave circuits where capacitance accuracy directly affects circuit performance. The main part and 08052U121GAT2A both specify ±2% tolerance.