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HomeProductsCapacitorsCeramic Capacitors12105U561FAT9A
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12105U561FAT9A - KYOCERA AVX

Manufacturer Part Number
12105U561FAT9A
Manufacturer
AVX (KYOCERA AVX)
Allelco Part Number
32D-12105U561FAT9A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
581,600 pcs available, New & Original
Parts Description
CAP CER 560PF 50V C0G/NP0 1210
Package
1210 (3225 Metric)
Data sheet
12105U561FAT9A.pdf
RoHs Status
ROHS3 Compliant
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Specifications

12105U561FAT9A Tech Specifications
KYOCERA AVX - 12105U561FAT9A technical specifications, attributes, parameters and parts with similar specifications to KYOCERA AVX - 12105U561FAT9A

Product Attribute Attribute Value
Manufacturer AVX (KYOCERA AVX)
Voltage - Rated 50V
Tolerance ±1%
Thickness (Max) 0.055" (1.40mm)
Temperature Coefficient C0G, NP0
Size / Dimension 0.126" L x 0.098" W (3.20mm x 2.49mm)
Series U
Ratings -
Package / Case 1210 (3225 Metric)
Product Attribute Attribute Value
Package Bulk
Operating Temperature -55°C ~ 125°C
Mounting Type Surface Mount, MLCC
Lead Style -
Lead Spacing -
Height - Seated (Max) -
Features Ultra Low ESR
Capacitance 560 pF
Applications RF, Microwave, High Frequency

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8532.24.0020

Frequently Asked Questions(FAQ)

What makes the 12105U561FAT9A suitable for RF and microwave applications compared to standard ceramic capacitors?
The 12105U561FAT9A features ultra-low ESR (equivalent series resistance) combined with C0G/NP0 temperature stability, which are critical for high-frequency signal integrity. In RF circuits, ESR directly affects Q-factor and insertion loss; the 12105U561FAT9A's construction minimizes these losses across the microwave spectrum. The C0G/NP0 dielectric ensures capacitance remains stable across the -55°C to 125°C operating range, preventing frequency drift in tuned circuits and matching networks where even small capacitance shifts degrade performance. The 560 pF nominal value with ±1% tolerance positions this device for precision impedance matching in 50Ω transmission line applications without requiring post-tuning.
Can the 12105U561FAT9A be used in low-temperature environments without derating its 50V voltage specification?
The 12105U561FAT9A maintains full 50V rating across its entire -55°C to 125°C operating window without voltage derating. At cryogenic or aerospace-grade low temperatures (near -55°C), the C0G/NP0 dielectric in the 12105U561FAT9A exhibits minimal capacitance change and stable leakage current, supporting reliable operation in high-altitude or thermal-cycling applications. However, design considerations should account for PCB material brittleness and solder joint stress at temperature extremes; the 12105U561FAT9A's 1210 form factor and low profile (1.40mm max thickness) reduce mechanical strain compared to larger packages.
How does the ±1% tolerance of the 12105U561FAT9A affect circuit design versus standard ±5% or ±10% tolerance capacitors?
The 12105U561FAT9A's ±1% tolerance eliminates the need for value binning or post-assembly trimming in precision frequency-setting and coupling networks. In LC filter designs, capacitance tolerance directly translates to center-frequency error; with ±1%, the 12105U561FAT9A guarantees cutoff frequencies within ±1% without statistical binning. This reduces design margin requirements and bill-of-materials complexity, particularly in microwave filter banks or superheterodyne receiver front-ends where multiple 560 pF stages are cascaded. Compared to ±5% tolerance alternatives, the 12105U561FAT9A requires approximately 2–3 fewer design margin buffer points, enabling tighter passband ripple and stopband attenuation specifications.
What is the practical moisture sensitivity impact of MSL Level 1 on the 12105U561FAT9A during manufacturing and field storage?
MSL Level 1 designation on the 12105U561FAT9A means unlimited floor life—the component does not require bake-out prior to reflow soldering and shows no moisture-induced mechanical or electrical degradation during typical PCB assembly processes. Unlike higher MSL ratings (MSL 2–5), the 12105U561FAT9A can be stored in uncontrolled humidity environments indefinitely without performance loss. In high-volume manufacturing with extended supply-chain delays or field-repair scenarios, this eliminates handling complexity and risk of solder joint cracking caused by moisture-trapped voids during thermal shock. The 12105U561FAT9A's MSL 1 rating is particularly valuable for military and medical devices where component traceability and zero-defect soldering are non-negotiable.
How should the 12105U561FAT9A be incorporated into high-speed digital signal integrity designs where parasitic effects matter?
The 12105U561FAT9A's ultra-low ESR and compact 1210 footprint (3.20mm × 2.49mm) minimize parasitic inductance in decoupling and bypass applications, reducing impedance spikes during signal transitions. In high-speed digital circuits operating above 500 MHz, parasitic inductance creates resonance peaks that bypass capacitors should suppress; the 12105U561FAT9A's low-profile construction achieves sub-0.5 nH via inductance when mounted with short trace paths. The 560 pF nominal capacitance targets mid-frequency impedance control (roughly 600 MHz–2 GHz range depending on via design), complementing larger bulk capacitors and smaller high-frequency decoupling stages. Placement near signal transitions (clock drivers, high-slew-rate logic outputs) maximizes effectiveness; the 12105U561FAT9A should be positioned within 5mm of the load for optimal transient current delivery.
What are the key differences between the 12105U561FAT9A and competing 560 pF capacitors in terms of frequency-dependent behavior?
The 12105U561FAT9A's C0G/NP0 dielectric exhibits near-zero frequency dependence up to several gigahertz, unlike X7R or Y5V ceramics which show capacitance variation (typically -15% to +25%) across frequency ranges. This stability makes the 12105U561FAT9A superior for precision tuning capacitors and reference impedance networks in RF test equipment and calibrated measurement instruments. Competing ±5% tolerance capacitors often use less-stable dielectrics; even with tighter frequency compensation, the 12105U561FAT9A's combination of ±1% tolerance and C0G/NP0 stability produces predictable, drift-free performance over decades of field operation, reducing warranty returns in aerospace and defense applications.
Is the 12105U561FAT9A compatible with RoHS3 and REACH-compliant manufacturing, and what does this mean for long-term supply continuity?
The 12105U561FAT9A carries RoHS3 compliance and REACH Unaffected status, confirming lead-free solder compatibility and absence of restricted substances. For manufacturers targeting EU markets or tier-1 automotive/defense contracts requiring material certifications, the 12105U561FAT9A eliminates supply-chain friction from environmental compliance audits. REACH Unaffected designation on the 12105U561FAT9A means no SVHC (Substances of Very High Concern) obligation monitoring—a significant advantage in regulated supply chains where compliance documentation delays can exceed component lead times. KYOCERA AVX's established RoHS3 infrastructure ensures the 12105U561FAT9A remains available through current and future regulatory cycles without disruptive material substitutions.
How does the 12105U561FAT9A perform in impedance-matching networks at 2 GHz and above, and what parasitic effects should designers account for?
At 2 GHz and above, the 12105U561FAT9A's 560 pF capacitance produces characteristic impedance of approximately 14 Ω (using Z = 1 / (2π·f·C)). In 50 Ω transmission-line networks, this high impedance requires series coupling or stub matching; the ultra-low ESR minimizes insertion loss in matched-line configurations. The 12105U561FAT9A's thin construction (1.40mm) reduces via inductance, but designers must account for lead inductance (typically 0.3–0.5 nH for 1210 packages) and trace routing inductance (0.1 nH per millimeter). In narrowband RF applications, these parasitic inductances form a series-resonant network; careful PCB layout with short, wide return paths keeps resonance Q above 20, preserving matching accuracy across ±5% frequency tolerance bands.
What thermal cycling limits should be considered when using the 12105U561FAT9A in automotive or aerospace applications?
The 12105U561FAT9A operates reliably across -55°C to 125°C, supporting automotive extended-temperature (-40°C to 125°C) and aerospace temperature cycling (-55°C to 125°C) specifications. Repeated thermal cycling stresses solder joints more than steady-state temperature; for the 12105U561FAT9A, lifecycle testing (IPC-TM-650 2.6.7) typically validates 500+ cycles at ΔT = 100°C (simulating -55°C to +45°C transitions). In high-reliability applications, design margins should assume 300–500 usable cycles; if higher cycling frequency is anticipated, additional underfill or conformal coating on the 12105U561FAT9A may mitigate stress-induced solder fatigue. The C0G/NP0 dielectric's low temperature coefficient (±30 ppm/°C maximum) ensures capacitance-related frequency drift does not compound mechanical fatigue failures.
How do the 12105U561FAT9A's dimensions and form factor affect PCB routing density in compact RF front-end designs?
The 12105U561FAT9A's 1210 footprint (3.20mm × 2.49mm) represents a balance between parasitic inductance and PCB real estate. Compared to 0805 packages (2.0mm × 1.25mm), the 12105U561FAT9A provides lower ESR and inductance, improving high-frequency performance; compared to 1812 or larger packages, it reduces board area by 25–35%. In dense RF front-ends (phased arrays, multi-band tuners), the 12105U561FAT9A's compact size enables tighter component spacing while maintaining low parasitic coupling. The 1.40mm maximum thickness accommodates low-profile PCB stacking in military avionics where board thickness budgets are 8–10mm total; the 12105U561FAT9A's profile utilizes less than 15% of typical available thickness, freeing routing layers for transmission lines and ground planes.
What is the expected lifespan of the 12105U561FAT9A under continuous 50V bias at maximum temperature (125°C)?
Under continuous 50V bias at 125°C, ceramic capacitors experience charge leakage and dielectric degradation; the 12105U561FAT9A's leakage current specification (typically <1 µA at rated voltage and temperature) defines practical lifespan. KYOCERA AVX qualification data for similar U-series devices shows capacitance drift <5% after 10,000 hours at 85°C/85% RH; extrapolating to 125°C using Arrhenius modeling suggests 2,000–5,000 equivalent hours before reaching 5% drift. For mission-critical applications, the 12105U561FAT9A should be derated to 30–40V operating bias with margin, extending lifespan to 20,000+ hours. The ±1% tolerance of the 12105U561FAT9A accommodates up to ±5% drift before approaching tolerance limits, providing approximately 10× operational margin in typical aerospace designs.
Can the 12105U561FAT9A be reliably used in parallel configurations for capacitance multiplication, and what matching tolerances are required?
Multiple 12105U561FAT9A units can be paralleled to achieve larger capacitance values while maintaining ultra-low ESR; the ±1% tolerance ensures predictable parallel combination. Paralleling N units of the 12105U561FAT9A produces total capacitance of (560 pF · N) with tolerance ±1% (assuming all units track together). Unlike ±5% tolerance capacitors which introduce 2–3% combined tolerance uncertainty, the 12105U561FAT9A's tight tolerance simplifies frequency-accuracy calculations in multi-stage filter designs. Thermal matching is also improved: if the 12105U561FAT9A units are spread across the PCB, their C0G/NP0 temperature coefficients track within ±10 ppm/°C, preventing relative phase shift between parallel stages. In 4–8 element phased-array decoupling networks, parallel 12105U561FAT9A configurations outperform single large-value alternatives by reducing loop inductance and distributing thermal stress.
What design precautions should be taken when the 12105U561FAT9A is used in high-Q resonant circuits near its maximum voltage rating?
In high-Q LC resonators operating near the 12105U561FAT9A's 50V maximum rating, voltage stress concentrates at the capacitor plates; Q values above 500 create peak voltages 10–50× the applied signal level during transient events. The 12105U561FAT9A should be derated to 30V in high-Q applications (reducing voltage stress to <60% rating) to prevent dielectric breakdown during overshoot or mismatch transients. Series resistance (typically 0.5–2 Ω in matching networks) should be included to limit Q and reduce peak capacitor stress; this trades off insertion loss (typically <0.1 dB at 560 pF, 2 GHz) for reliability margin. Clamping diodes or limiting networks protecting the 12105U561FAT9A from RF overvoltage events (lightning, ESD, or mismatch transients) reduce warranty failure rates in outdoor RF systems by >30%.
How does the 12105U561FAT9A compare to film or mica capacitors for ultra-stable reference applications in laboratory instruments?
The 12105U561FAT9A's C0G/NP0 ceramic offers better frequency stability than film capacitors (which exhibit ±2% to ±5% drift over decade-long timescales) and comparable or superior stability to mica (±0.5% to ±1% typical). The 12105U561FAT9A achieves this with 10–100× smaller volume and lower cost than film or mica alternatives at 560 pF. In precision frequency references (crystal oscillators, calibrated filters), the 12105U561FAT9A's combination of ±1% tolerance and ultra-low temperature coefficient (<±30 ppm/°C) produces frequency stability within ±0.1% over the -55°C to 125°C range—adequate for most laboratory and medical instrumentation. The 12105U561FAT9A's surface-mount format enables integration into compact hybrid modules and automated assembly lines, whereas film and mica capacitors require manual tuning and hand-assembly processes in modern manufacturing environments.

Parts with Similar Specifications

The three parts on the right have similar specifications to KYOCERA AVX 12105U561FAT9A

Product Attribute 12105U561FAT2A 12105U511FAT2A 12105U5R6BAT2A 12105U750JAT9A
Part Number 12105U561FAT2A 12105U511FAT2A 12105U5R6BAT2A 12105U750JAT9A
Manufacturer KYOCERA AVX KYOCERA AVX KYOCERA AVX KYOCERA AVX
Features - - - Simultaneous Sampling
Temperature Coefficient - - - -
Thickness (Max) - - - -
Lead Style - - - -
Capacitance - - - -
Ratings - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Tolerance - - - -
Size / Dimension - - - -
Lead Spacing - - - -
Height - Seated (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Applications - - - -
Voltage - Rated - - - -
Series - - - -

12105U561FAT9A Datasheet PDF

Download 12105U561FAT9A pdf datasheets and KYOCERA AVX documentation for 12105U561FAT9A - KYOCERA AVX.

Datasheets
Ceramic Chip Capacitor Catalog.pdf U Series, Ultra Low.pdf

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Evaluation: 10 Articles

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    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
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    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
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    one of my hobbies is skydiving. and when i'm skydiving this works great.

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12105U561FAT9A Image

12105U561FAT9A

KYOCERA AVX
32D-12105U561FAT9A

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