CL21A106KAYNNNE - 10uF 25V X5R MLCC 0805 | Samsung Electro-Mechanics
MPN: CL21A106KAYNNNE β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.15 | $0.15 |
| 10 | $0.11 | $1.10 |
| 100 | $0.06 | $6.00 |
| 500 | $0.05 | $25.00 |
| 1,000 | $0.03 | $30.00 |
| 4,000 | $0.03 | $120.00 |
CL21A106KAYNNNE Overview
An MLCC (multilayer ceramic capacitor) is a surface-mount passive component constructed by stacking alternating layers of ceramic dielectric and metal electrodes, then sintering them into a monolithic block. The X5R dielectric is a Class II (mid-permittivity) ceramic formulation that offers high volumetric efficiency - small case size for high capacitance - while maintaining reasonable temperature stability. MLCCs sit within the broader taxonomy of ceramic capacitors > capacitors > passive components > electronic components. X5R is one of the most widely used dielectrics for decoupling, filtering, and bulk energy storage in commercial-grade electronics.
Key features of the CL21A106KAYNNNE include 10 uF nominal capacitance with +/-10% tolerance, 25 VDC rated voltage (well above typical 3.3V and 5V logic rails), X5R dielectric for moderate temperature stability, 0805 (2012 Metric) surface-mount package with standard solder pad geometry, and Ni-barrier + Sn (matte tin) terminations for lead-free reflow compatibility. The 0805 size provides a balanced trade-off between board space and effective capacitance, making this part one of the highest-volume MLCC SKUs in the industry.
Technically, the X5R formulation uses a barium titanate-based ceramic with shift agents to flatten the temperature curve across -55C to +85C. Compared to X7R (more stable but lower capacitance density) and Y5V (higher density but poor stability), X5R hits a sweet spot for general-purpose commercial applications. The 25V rating on a 10uF/0805 part provides substantial voltage derating margin in 5V and 12V rails, where operating voltage is typically 50% or less of rated voltage - critical because DC bias effects reduce effective capacitance at high field strengths.
Typical applications for the CL21A106KAYNNNE include IC power decoupling on MCU and DSP boards, bulk filtering on 3.3V/5V/12V rails in consumer electronics, smoothing capacitors for low-dropout (LDO) regulators, audio circuit bypass networks, and general-purpose energy storage in IoT and embedded designs. The 10uF/0805 combination is one of the most common decoupling capacitor footprints in mass-produced electronics.
When designing with this part, account for DC bias derating - a 10uF X5R cap at 5V bias may deliver only 6-7 uF of effective capacitance due to the dielectric's voltage coefficient. Place decoupling capacitors as close as possible to the IC power pin with short, wide traces to minimize parasitic inductance. For noise-sensitive analog circuits, consider paralleling two 10uF X5R caps or substituting an X7R part for better stability.
This page synthesizes distributor pricing from DigiKey, Mouser, LCSC, and Octopart, plus cross-brand drop-in alternatives (Murata, TDK, KEMET) and practical design notes not found in the Samsung datasheet alone.
Drop-in alternatives for CL21A106KAYNNNE β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
CL21A106KAYNNNG
β Drop-Inπ Reference alternative (not in catalog)
CL21A106KAYNNNF
β Drop-Inπ Reference alternative (not in catalog)
CL21A106KAFN3NE
β Drop-Inπ Reference alternative (not in catalog)
GRM21BR61E106KE43L
β Drop-Inπ Reference alternative (not in catalog)
C2012X5R1E106K085AC
β Drop-Inπ Reference alternative (not in catalog)
C0805C106K8PACTU
β Drop-Inπ Reference alternative (not in catalog)
CL21A106KAYNNNE Maximum Ratings & Electrical Characteristics
| Capacitance | 10 uF |
| Capacitance Tolerance | +/-10% |
| Rated Voltage (DC) | 25 V |
| Dielectric Characteristic | X5R (EIA) |
| Temperature Coefficient | +/-15% (-55C to +85C) |
| Package / Case Size | 0805 (2012 Metric) |
| Package Dimensions | 2.00 mm x 1.25 mm |
| Mounting Type | Surface Mount (SMT) |
| Termination Style | Ni-barrier + matte Sn (lead-free reflow) |
| Operating Temperature Range | -55C to +85C |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | ROHS3 Compliant |
| Lead-Free Status | Lead Free |
| Construction | Multilayer Ceramic (MLCC) |
| Manufacturer Series | CL Series (Samsung Electro-Mechanics) |
CL21A106KAYNNNE Pin Configuration
| Pin 1 | Terminal 1 β Solder pad (anode-equivalent); non-polarized MLCC |
| Pin 2 | Terminal 2 β Solder pad (cathode-equivalent); non-polarized MLCC |
Typical Applications
CL21A106KAYNNNE is suitable for 6 applications: IC Power Decoupling (MCU/DSP), LDO Output Smoothing Capacitor, DC-DC Converter Output Filter, Audio Signal Coupling and Bypass, IoT Sensor and Module Bulk Filtering, Automotive ECU Power Rail Filtering.
IC Power Decoupling (MCU/DSP)
The Samsung CL21A106KAYNNNE is one of the most widely used decoupling capacitors for MCU and DSP power pins. Its 10uF bulk capacitance smooths transient current spikes when processors switch cores, while the 25V rating provides ample voltage derating margin for 3.3V and 5V rails. The X5R dielectric delivers effective capacitance around 6-7uF at typical DC bias, and the 0805 footprint fits standard high-density SMT layouts. Place the capacitor within 1-2mm of each VDD pin with short, wide traces and a via to the ground plane directly beneath the pad. According to Samsung MLCC guidelines, this part is qualified for reflow soldering up to 260C peak temperature per JEDEC J-STD-020. The 10uF/0805 combination pairs well with 100nF 0402 caps for multi-stage decoupling.
Recommended
LDO Output Smoothing Capacitor
The CL21A106KAYNNNE is commonly paired with low-dropout regulators as an output smoothing capacitor. Its 10uF bulk storage and X5R dielectric handle the regulator's transient response requirements while the 25V rating accommodates headroom above 5V and 12V input rails. According to most LDO datasheets (e.g., TI TPS7A47xx, Analog Devices LT3045), a minimum 10uF output capacitance is recommended for stable regulation - this Samsung part meets that requirement with low ESR (single-digit milliohms) that contributes to regulator loop stability. Place the capacitor close to the LDO output pin with a ground return via directly underneath. The Ni-barrier termination tolerates the high temperatures of lead-free reflow profiles used in modern PCB assembly.
Recommended
DC-DC Converter Output Filter
The CL21A106KAYNNNE serves as an output filter capacitor for buck and boost DC-DC converters in the 3.3V to 12V range. Its 10uF capacitance handles inductor ripple current, while the X5R dielectric maintains reasonable capacitance across temperature variations typical of power supply environments. According to the Samsung MLCC reliability data, this part is rated for 1000 hours at 2x rated voltage and 85C, providing sufficient margin for DC-DC applications. The 0805 footprint allows tight placement near the converter's switch node to minimize parasitic inductance. For high-frequency switching converters (>1 MHz), engineers may parallel multiple 10uF X5R caps or add a smaller 100nF X7R cap in parallel for high-frequency bypassing.
Recommended
Audio Signal Coupling and Bypass
The CL21A106KAYNNNE is suitable for audio coupling and bypass networks in consumer audio products, headphone amplifiers, and microphone pre-amplifiers. Its X5R dielectric provides stable capacitance across the audio band (20 Hz to 20 kHz), and the 10uF value delivers low -3dB cutoff frequencies when used as a coupling cap (e.g., 1.6 Hz with 10kohm input impedance). According to Samsung's impedance-frequency characteristics for the CL21 series, this part maintains effective capacitance into the MHz range, making it suitable for bypassing high-frequency noise on analog power rails. The 25V rating ensures low voltage coefficient effects in low-level audio circuits where the DC bias is small relative to rated voltage.
Recommended
IoT Sensor and Module Bulk Filtering
The CL21A106KAYNNNE is a staple bulk capacitor for IoT sensor modules, BLE/WiFi modules, and battery-powered wearables where board space is at a premium. Its 0805 footprint and 10uF/25V rating support the burst current demands of radio transceivers during TX pulses, while the X5R dielectric remains stable across the operating temperature range of typical consumer IoT products (-20C to +70C). According to Samsung's datasheet, this part exhibits low DC leakage (<0.1 uA at rated voltage), critical for battery life in always-on IoT devices. The lead-free Ni-Sn termination supports reflow profiles up to 260C peak, compatible with standard SMT assembly for IoT modules.
Recommended
Automotive ECU Power Rail Filtering
The CL21A106KAYNNNE is widely used in non-safety automotive ECU applications for power rail filtering, sensor conditioning, and infotainment subsystems. Its 25V rating provides substantial voltage margin on 12V automotive battery rails (which can transient spike to 16-18V during load dump), and the X5R dielectric maintains capacitance stability across -40C to +85C underhood environments. According to Samsung's automotive-grade MLCC datasheets, similar parts in this series are PPAP capable and meet AEC-Q200 stress test requirements. Place these capacitors near ECU power connectors and sensor inputs with short traces to minimize EMI susceptibility. For safety-critical applications (airbag, ABS, ADAS), engineers should select AEC-Q100 qualified companion ICs from the Site MPN list.
Recommended
Recommended Products Summary
Engineering reference data for CL21A106KAYNNNE β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CL21A106KAYNNNG | GRM21BR61E106KE43L | C2012X5R1E106K085AC | C0805C106K8PACTU |
|---|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Murata Manufacturing | TDK | KEMET |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) - same | 0805 (2012 Metric) - same | 0805 (2012 Metric) - same | 0805 (2012 Metric) - same |
| Capacitance | 10 uF | 10 uF | 10 uF | 10 uF | 10 uF |
| Rated Voltage | 25 V | 25 V | 25 V | 25 V | 25 V |
| Dielectric | X5R | X5R | X5R | X5R | X5R |
| Capacitance Tolerance | +/-10% | +/-10% | +/-10% | +/-10% | +/-10% |
| Operating Temperature | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C | -55C to +85C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS Compliant | ROHS Compliant | ROHS Compliant |
| Approx. Unit Price (qty 1000) | $0.03 | $0.03 | $0.04-$0.06 | $0.04-$0.07 | $0.04-$0.08 |
Key Differentiators
- Samsung Electro-Mechanics brand reliability (vs GRM21BR61E106KE43L (Murata))
- Lowest unit price at 1000+ quantities (vs C2012X5R1E106K085AC (TDK))
- Lead-free ROHS3 compliance with Ni-Sn terminations (vs C0805C106K8PACTU (KEMET))
Design Notes
DC bias derating is the most common design pitfall with X5R MLCCs like the CL21A106KAYNNNE. At a 5V DC bias on a 25V-rated part, the effective capacitance may drop to 60-70% of nominal (i.e., 6-7uF instead of 10uF) due to the dielectric's voltage coefficient. Engineers should consult the manufacturer capacitance-voltage curve and budget 30-50% derating margin for X5R parts in 5V or higher rails. For tighter tolerance, consider X7R dielectric (e.g., Murata GRM21BR71E106KE43L) at the cost of larger case size or higher price.
Place the CL21A106KAYNNNE within 1-2mm of the IC power pin it is decoupling, with a via to the ground plane placed directly beneath or adjacent to the capacitor's ground pad. Use short, wide traces (>=0.25mm width) to minimize parasitic inductance. Avoid routing noisy signal traces between the capacitor and the IC. For multi-layer boards, the ground plane on layer 2 directly beneath the capacitor reduces high-frequency impedance. According to Samsung MLCC layout guidelines, the 0805 land pattern should be 1.20mm x 0.95mm pads with 1.00mm center-to-center spacing for optimal solder joint reliability.
Piezoelectric acoustic noise can be generated by X5R MLCCs like the CL21A106KAYNNNE when subjected to mechanical vibration or rapid voltage changes. In audio circuits, this manifests as an audible buzz or whine. According to Samsung application notes, the CL21 series exhibits measurable piezoelectric effect under high dV/dt conditions (e.g., DC-DC converter output). For noise-sensitive audio applications, consider X7R dielectric, C0G/NP0 dielectric for lower capacitance values, or physically decouple the capacitor from the PCB with damping material.
Compliance Information
ROHS3 Compliant per Samsung Electro-Mechanics product page. Lead-free Ni-barrier + matte Sn terminations. Halogen-free per Samsung MLCC datasheet family specification. AEC-Q200 (automotive) qualification status: standard CL21 series is commercial grade; AEC-Q200 qualified equivalents are available in separate Samsung CL series part numbers with automotive suffixes. Not AEC-Q100 qualified (this is a passive component - AEC-Q100 applies to active ICs).
