CL21A106KAYNNNE - 10uF 25V X5R MLCC 0805 | Samsung
MPN: CL21A106KAYNNNE β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.12 | $1.20 |
| 100 | $0.08 | $8.00 |
| 500 | $0.065 | $32.50 |
| 1,000 | $0.055 | $55.00 |
| 4,000 | $0.046 | $184.00 |
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 with external terminations. The X5R dielectric is a Class II mid-permittivity barium-titanate-based ceramic formulation that offers high volumetric efficiency - small case size for high capacitance - while maintaining reasonable temperature stability across -55 C to +85 C. MLCCs sit within the broader taxonomy of ceramic capacitor > capacitor > passive component > electronic component, and X5R is one of the most widely deployed dielectrics for decoupling, filtering, and bulk energy storage in commercial-grade electronics.
Key features of the CL21A106KAYNNNE include 10 uF nominal capacitance with plus/minus 10% tolerance, 25 VDC rated voltage which provides substantial headroom over typical 3.3 V and 5 V logic rails, X5R dielectric for moderate temperature stability with plus/minus 15% capacitance change across the rated temperature range, 0805 (2012 Metric) surface-mount package with standard solder pad geometry, and matte-tin terminations over a nickel barrier for lead-free reflow compatibility. The 0805 size provides a balanced trade-off between board area and effective capacitance, making this part one of the highest-volume MLCC SKUs in mass-produced consumer and industrial electronics.
Technically, the X5R formulation uses a barium titanate-based ceramic with shift agents to flatten the temperature curve across -55 C to +85 C. 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 25 V rating on a 10 uF / 0805 part provides substantial voltage derating margin in 5 V and 12 V rails, where operating voltage is typically 50% or less of rated voltage - critical because DC bias effects can reduce effective capacitance by 20-40% at high field strengths.
Typical applications for the CL21A106KAYNNNE include IC power decoupling on MCU, DSP, and SoC boards, bulk filtering on 3.3 V / 5 V / 12 V power rails in consumer electronics, output smoothing capacitors for low-dropout (LDO) regulators, audio circuit bypass networks, and general-purpose energy storage in IoT and embedded designs. The 10 uF / 0805 combination is one of the most common decoupling footprints in mass-produced electronics.
When designing with this part, account for DC bias derating - a 10 uF X5R cap at 5 V bias may deliver only 6-7 uF of effective capacitance. 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 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, Yageo) 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.
Variants in this series
Same-series models that are drop-in compatible with CL21A106KAYNNNE (same form factor and footprint) β differing in Capacitance Tolerance, Operating Temperature Range, Mounting Type, Rated Voltage (DC), RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
CL21A106KAYNNN
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)
C0805C106K8RACTU
β Drop-Inβ In Stock
$0.1 / Unit
View Datasheet βLMK107BJ106MA-T
β Drop-Inβ In Stock
$0.035 / Unit
View Datasheet βGRM21BR61E106KA73L
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) |
| Capacitance Change vs Temperature | +/- 15% (-55 C to +85 C) |
| Package / Case Size | 0805 (2012 Metric) |
| Length | 2.00 mm (+/- 0.20 mm) |
| Width | 1.25 mm (+/- 0.20 mm) |
| Thickness | 1.25 mm (max) |
| Mounting Type | Surface Mount |
| Termination Style | Matte Tin (Sn) over Nickel barrier |
| Lead-Free Reflow Compatible | Yes (peak 260 C) |
| Operating Temperature Range | -55 C to +85 C |
| RoHS Status | Compliant |
CL21A106KAYNNNE Pin Configuration
| Pin 1 | Terminal 1 β Anode/positive terminal (matte Sn over Ni barrier) |
| Pin 2 | Terminal 2 β Cathode/negative terminal (matte Sn over Ni barrier) |
Typical Applications
CL21A106KAYNNNE is suitable for 6 applications: IC Power Decoupling, LDO Regulator Output Smoothing, Audio Circuit Bypass Networks, DC-DC Converter Input Filtering, IoT and Wearable Device Energy Storage, USB Power and Data Line Filtering.
IC Power Decoupling
The CL21A106KAYNNNE is one of the most widely deployed decoupling capacitors on 3.3 V and 5 V logic rails for ARM Cortex-M microcontrollers, ESP32 Wi-Fi SoCs, and digital signal processors. Placed within 1-3 mm of each VDD pin on the IC package, its 10 uF bulk capacitance suppresses transient current demands during clock edges and GPIO switching, reducing rail ripple by 60-80% compared to 100 nF-only decoupling schemes. The X5R dielectric's volumetric efficiency keeps the 0805 footprint compact on dense SoC breakout boards where 0402/0603 parts cannot supply sufficient bulk energy.
Recommended
LDO Regulator Output Smoothing
Used on the output stage of low-dropout regulators such as the LM1117-3.3, AMS1117-5.0, and TPS7A4701, the CL21A106KAYNNNE provides bulk output capacitance to meet regulator stability requirements. Most LDOs specify a minimum 10 uF output ESR (typically < 100 mOhm at 100 kHz) for stable loop compensation. The X5R dielectric's stable temperature profile (-55 C to +85 C) prevents LDO oscillation across operating conditions. A 10 uF / 0805 X5R cap is the de facto standard output cap for sub-1 A LDO designs in commercial and industrial applications.
Recommended
Audio Circuit Bypass Networks
In analog audio signal chains, the CL21A106KAYNNNE serves as a bypass capacitor on the supply pins of op-amps (e.g., NE5532, OPA2134, TL072) and codec ICs (e.g., SGTL5000, WM8960). Its 10 uF bulk capacitance combined with a parallel 100 nF ceramic forms a wide-bandwidth supply filter that suppresses ripple from switching power converters feeding the analog section. The 25 V rating provides substantial margin over the +/- 15 V typical analog supply rails, while the 0805 footprint fits in the tight layouts of portable audio DAC boards.
Recommended
DC-DC Converter Input Filtering
Placed at the input of buck regulators (e.g., MP1584, TPS54331, LMR16030), the CL21A106KAYNNNE reduces input voltage ripple caused by the regulator's switching action. With a 25 V rating, it handles 12 V and 15 V intermediate bus voltages common in industrial and automotive subsystems. The 0805 size provides sufficient energy storage for sub-3 A converters without the cost penalty of larger case sizes. Designers typically parallel this part with a 1 uF or 4.7 uF ceramic to cover both high-frequency and bulk ripple frequencies.
Recommended
IoT and Wearable Device Energy Storage
In battery-operated IoT sensors, fitness trackers, and BLE beacons, the CL21A106KAYNNNE provides local bulk capacitance to handle inrush demands during radio bursts. BLE transmit events draw 5-15 mA peaks lasting 1-5 ms from a coin-cell or Li-ion battery with high source impedance; the 10 uF cap supplies this transient without dropping the supply below the brownout threshold. The 0805 size balances capacitance density against board-area constraints in compact wearable form factors, and the X5R dielectric maintains capacitance across body-temperature operating conditions.
Recommended
USB Power and Data Line Filtering
On USB 2.0 / USB-C device boards, the CL21A106KAYNNNE is used for VBUS bulk filtering, providing local energy storage for inrush events during USB enumeration and hot-plug scenarios. Its 25 V rating easily handles the USB-C 5 V / 20 V VBUS range when properly derated. Designers commonly pair it with a 100 nF X7R ceramic to create a wide-bandwidth PI filter that suppresses both switching converter noise and ESD-induced ringing. The 0805 size fits within the tight USB-C connector keep-out zones.
Recommended
Recommended Products Summary
Engineering reference data for CL21A106KAYNNNE β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CL21A106KAYNNN | CL21A106KAYNNNF | C0805C106K8RACTU | LMK107BJ106MA-T | GRM21BR61E106KA73L |
|---|---|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Samsung Electro-Mechanics | KEMET | Taiyo Yuden | Murata Manufacturing |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) - same | 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 | 10 uF |
| Rated Voltage | 25 V | 25 V | 25 V | 25 V | 10 V | 25 V |
| Dielectric | X5R | X5R | X5R | X5R | X5R | X5R |
| Tolerance | +/- 10% | +/- 10% | +/- 10% | +/- 10% | +/- 20% | +/- 10% |
| Flex Termination | Standard | Standard | Yes - epoxy buffer layer | Standard | Standard | Standard |
| Unit Price (qty 1000) | $0.055 | $0.055 | $0.07 | $0.085 | $0.075 | $0.09 |
Key Differentiators
- Industry-standard 10 uF / 25 V / X5R / 0805 profile with broadest cross-brand availability (vs C0805C106K8RACTU (KEMET))
- Flex-termination variant (F suffix) available for high-stress applications (vs LMK107BJ106MA-T (Taiyo Yuden))
- Higher 25 V rating vs 10 V competitors for high-voltage rails (vs LMK107BJ106MA-T (Taiyo Yuden))
Design Notes
DC bias derating is the most common design mistake with X5R MLCCs. A 10 uF X5R cap at 5 VDC bias typically delivers only 7-8 uF of effective capacitance; at 12 VDC bias, 6.5-7.5 uF. For applications where effective capacitance matters (timing circuits, integrators, hold capacitors), derate by 50% or specify X7R dielectric. Samsung's C-V curves in the datasheet show the actual capacitance vs DC bias profile for each case size - consult them before final BOM lock.
Place decoupling capacitors as close as possible (within 1-3 mm) to the IC power pin to minimize parasitic inductance from the trace. Use short, wide traces (>= 0.3 mm width) connecting each terminal to the corresponding power or ground plane via. Avoid routing high-current switching signals between the cap and the IC. For 0805 pads, use the standard IPC-7351 land pattern with approximately 0.95 mm x 1.10 mm pads on a 2.30 mm pitch - deviations from this pattern can cause tombstoning during reflow.
Estimated: thermal derating at high-frequency operation is minimal for this part, but peak reflow temperature must not exceed 260 C for more than 60 seconds. For double-sided reflow assemblies, mount the CL21A106KAYNNNE on the top side first; if mounted on the bottom and subjected to a second reflow pass, the cap may see temperatures approaching its peak rating. For thermal-shock-sensitive assemblies (large BGAs, ceramic PCBs), consider the CL21A106KAYNNNF flex-termination variant to mitigate cracking risk.
Compliance Information
RoHS compliant per Samsung Electro-Mechanics product page. Lead-free matte-tin (Sn) terminations compatible with 260 C peak reflow. Not AEC-Q200 qualified - choose an automotive-grade MLCC for under-hood or safety-critical applications. REACH compliance not explicitly stated in datasheet - assumed compliant as Samsung Electro-Mechanics is a major supplier to EU OEMs.
