CL21B106KPQNNNE - 10uF 10V X7R MLCC 0805 | Samsung Electro-Mechanics
MPN: CL21B106KPQNNNE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.05 | $0.05 |
| 10 | $0.046 | $0.46 |
| 100 | $0.04 | $4.00 |
| 500 | $0.034 | $17.00 |
| 1,000 | $0.028 | $28.00 |
| 4,000 | $0.024 | $96.00 |
CL21B106KPQNNNE Overview
A multilayer ceramic capacitor (MLCC) is a passive component built by stacking alternating metal electrode layers and ceramic dielectric layers, then co-firing them into a single monolithic block. MLCCs are the dominant capacitor technology for general-purpose decoupling, filtering, and energy storage on modern printed circuit boards because they combine small size, low equivalent series resistance (ESR), low equivalent series inductance (ESL), and excellent high-frequency performance. X7R belongs to the EIA Class II dielectric family, sitting in the broader hierarchy of ceramic capacitor -> MLCC -> Class II -> X7R -> stable mid-K dielectric. Compared with Class I dielectrics such as C0G/NP0, X7R trades some stability for substantially higher volumetric efficiency - i.e. more capacitance per cubic millimeter - which is why it dominates decoupling and bulk-bypass positions.
Key features of the CL21B106KPQNNNE include 10 uF nominal capacitance at 10 VDC rated voltage, plus/minus 10 percent capacitance tolerance (K tolerance code), X7R temperature characteristic code, and compliance with RoHS3 / REACH requirements. The 0805 case size (2012 metric) supports automated pick-and-place and is one of the most universally available footprints. MSL 1 (unlimited) rating means there are no special moisture-sensitive handling requirements during PCB assembly.
Technically, X7R capacitors exhibit capacitance that decreases with applied DC bias (the DC-bias effect), and the effective capacitance at 5 V on a 10 V-rated part is typically 60-80 percent of the nominal 10 uF. ESR at 100 kHz to 1 MHz is low (tens of milliohms), enabling effective decoupling of digital ICs, and self-resonant frequency is high enough that the part is useful at high frequencies for bypassing.
Typical applications include IC decoupling on microcontroller and SoC power rails, bulk bypass capacitance on 3.3 V and 5 V power distribution networks, smoothing at LDO regulator outputs, and general signal-line filtering in consumer, industrial, and IoT electronics. The 0805 footprint and 10 V rating also suit USB, BLE, and Wi-Fi module decoupling networks.
When designing with this part, derate the working voltage (commonly to 80 percent or less of rated voltage) to ensure reliability margin, account for DC-bias capacitance loss when computing effective decoupling at operating voltage, and place the capacitor as close as possible to the IC supply pin to minimize parasitic loop inductance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for CL21B106KPQNNNE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CL21B106KPQNNNF
✅ Drop-In📋 Reference alternative (not in catalog)
CL21B106KPQNFNE
✅ Drop-In📋 Reference alternative (not in catalog)
GRM21BR71A106KE44L
✅ Drop-In📋 Reference alternative (not in catalog)
C2012X7R1A106K125AC
✅ Drop-In📋 Reference alternative (not in catalog)
CC0805KKX7R0BB106
✅ Drop-In📋 Reference alternative (not in catalog)
CL21B106KPQNNNE Maximum Ratings & Electrical Characteristics
| Capacitance | 10 uF |
| Capacitance Tolerance | +/-10% (K tolerance code) |
| Rated Voltage | 10 VDC |
| Dielectric / Temperature Characteristic | X7R (EIA Class II) |
| Operating Temperature Range | -55 C to +125 C |
| Package / Case Size | 0805 (2012 metric) |
| Length | 2.00 mm (0.079 in) |
| Width | 1.25 mm (0.049 in) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Termination Style | Solder Pad (Nickel barrier + Tin plating, RoHS) |
| MSL (Moisture Sensitivity Level) | 1 (Unlimited) |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Construction | Multilayer Ceramic (Monolithic MLCC) |
| Polarity | Non-polarized (ceramic dielectric) |
| Packaging | Tape & Reel (paper carrier, 7-inch reel) |
CL21B106KPQNNNE Pin Configuration
| Pin 1 | Terminal A — Solder pad - one of two non-polarized terminals of the MLCC, equivalent to the bottom and side metallization in standard 0805 land pattern |
| Pin 2 | Terminal B — Solder pad - second non-polarized terminal of the MLCC, electrically identical to Terminal A |
Typical Applications
CL21B106KPQNNNE is suitable for 6 applications: Microcontroller and SoC Decoupling, Bulk Bypass on 5V USB Power Rail, LDO Regulator Output Smoothing, IoT and Wearable Sensor Filtering, Industrial Control and Factory Automation, Consumer Electronics Main Board Decoupling.
Microcontroller and SoC Decoupling
The CL21B106KPQNNNE is a workhorse 0805 10 uF X7R MLCC placed adjacent to microcontroller (MCU) and system-on-chip (SoC) supply pins to suppress transient current spikes during logic edge transitions. With 10 V rated voltage the part has 100% headroom over typical 3.3 V and 5 V MCU rails, and the 0805 footprint's 2.0 mm x 1.25 mm body keeps the PCB loop inductance low enough to be effective from DC to several hundred MHz. X7R's +/-15% capacitance variation across -55 C to +125 C is acceptable for bulk decoupling where the goal is to provide instantaneous charge reservoir, not a precise filter cutoff. Place the capacitor as close as possible to the VDD pin with a short, wide trace and a via-in-pad or short via stub to the inner ground plane to maximize high-frequency decoupling effectiveness.
Recommended
Bulk Bypass on 5V USB Power Rail
The CL21B106KPQNNNE is well-matched to bulk bypass on 5 V USB and 3.3 V downstream power rails where 10 uF of energy storage smooths the rectified USB bus and supports downstream load transients. The 10 V rating provides 100% voltage headroom over a 5 V nominal bus, satisfying the common 80%-derating rule (continuous stress below 8 V). Compared with a 1210 or 1206 case, the 0805 keeps the BOM compact and supports higher-density designs like USB dongles, hubs, and OTG adapters. Place one CL21B106KPQNNNE at each major rail branch and pair with a smaller 0.1 uF C0G/NP0 high-frequency bypass on each downstream IC supply pin for full-spectrum decoupling.
Recommended
LDO Regulator Output Smoothing
The CL21B106KPQNNNE complements an LDO regulator output by providing 10 uF of bulk capacitance that helps the regulator respond to fast load steps and reduces output ripple. The 0805 footprint fits behind most 1 A LDOs in SOT-23, SOT-223, or small DFN packages, and the 10 V rating comfortably covers 5 V and 3.3 V regulated outputs with substantial margin. X7R's DC-bias loss (typically 20-40% at 5 V) means the regulator sees roughly 6-8 uF effective capacitance - still adequate for transient response in most designs. Pair with a 1 uF or 0.1 uF C0G/NP0 directly at the load for best high-frequency PSRR retention.
Recommended
IoT and Wearable Sensor Filtering
The CL21B106KPQNNNE is appropriate for low-power IoT and wearable sensor modules where the 10 uF bulk capacitor stabilizes the local LDO feeding the BLE radio, microcontroller, and sensor ICs. The 0805 case keeps board area minimal in wearables, hearables, and small form-factor sensor nodes. Pair the CL21B106KPQNNNE with a 0.1 uF decoupling cap on each sensor rail to handle the high-frequency switching noise from the radio and digital core. The X7R dielectric's modest temperature coefficient is acceptable for sensor filtering where the absolute capacitance value is non-critical.
Recommended
Industrial Control and Factory Automation
The CL21B106KPQNNNE suits industrial control boards where -55 C to +125 C X7R operation handles factory-floor temperature swings and the 0805 case supports high-density PLC, motor-control, and sensor-interface boards. The 10 uF capacitance provides bulk energy for relay drivers, isolated DC-DC converters on the secondary side, and 24 V-to-5 V buck regulator outputs stepping down to logic rails. The RoHS3 / REACH compliance status supports industrial and European regulatory requirements. Pair with TVS protection on field-side connectors and an isolated DC-DC for full industrial EMC robustness.
Recommended
Consumer Electronics Main Board Decoupling
The CL21B106KPQNNNE is a workhorse MLCC for consumer main boards where 10 uF of bulk decoupling must be scattered across many IC supply pins in a high-density PCB. The 0805 case is one of the most widely handled footprints in pick-and-place assembly lines, reducing placement defects, and Samsung Electro-Mechanics' massive production capacity keeps lead times short. Use the part at every major rail branch and at the input and output of every local LDO. This combination of availability, footprint compatibility, and X7R reliability makes the CL21B106KPQNNNE a default choice for set-top boxes, smart-home hubs, and white-goods control modules.
Recommended
Recommended Products Summary
Engineering reference data for CL21B106KPQNNNE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CL21B106KPQNNNF | GRM21BR71A106KE44L | C2012X7R1A106K125AC | CC0805KKX7R0BB106 |
|---|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Murata Manufacturing | TDK | Yageo |
| 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 | 10 V | 10 V | 10 V | 10 V | 10 V |
| Capacitance Tolerance | +/-10% (K) | +/-10% | +/-10% | +/-10% | +/-10% |
| Dielectric | X7R | X7R | X7R | X7R | X7R |
| Operating Temperature | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C | -55 C to +125 C |
| RoHS / REACH | RoHS3 Compliant / REACH Unaffected | RoHS3 Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Key Differentiators
- Samsung Electro-Mechanics MLCC scale and supply security (vs Yageo CC0805KKX7R0BB106)
- Murata GRM-series dielectric consistency (vs Murata GRM21BR71A106KE44L)
- TDK C2012 series automotive heritage (vs TDK C2012X7R1A106K125AC)
Design Notes
DC-bias capacitance loss is the most common pitfall with 0805 10 uF X7R MLCCs at 10 V rating. When operated at 5 V applied bias, the effective capacitance typically drops to 60-80 percent of nominal because the X7R dielectric's high-K grain structure saturates under DC field. If your design needs a true 10 uF at 5 V, consider a higher-rated part (16 V or 25 V) which exhibits a flatter bias curve, or accept the loss and oversize capacitance accordingly. Always check the manufacturer's DC-bias curve for the exact lot and voltage point.
Place CL21B106KPQNNNE as close as physically possible to the IC supply pin it is decoupling, with the shortest possible trace to the IC VDD pad and the ground return through a via-in-pad or a short via stub to the inner ground plane. The 0805 footprint has a 1.20 mm pad-to-pad pitch - keep the loop area under a few square millimeters to maintain effective high-frequency decoupling. Avoid routing signal lines between the capacitor and the IC supply pin, as that adds loop inductance and degrades high-frequency performance above the capacitor's self-resonant frequency.
Derate the working voltage of CL21B106KPQNNNE to 80% or less of the 10 V rating (i.e. continuous stress below 8 V) for long-term reliability margin. Although the part is rated 10 V, sustained operation near the rated voltage accelerates dielectric aging and reduces mean-time-to-failure. For a 5 V rail, the 10 V rating gives generous headroom; for a 12 V rail, the part is unsuitable and a higher-voltage MLCC should be selected. For very low voltage rails (1.8 V, 3.3 V), the 10 V rating provides substantial margin but consider a lower-voltage 6.3 V X5R part if DC-bias loss is critical.
Compliance Information
RoHS3 Compliant and REACH Unaffected per Samsung Electro-Mechanics product page and PartGenie aggregator notes. Not AEC-Q100 qualified - this part targets consumer/industrial/general-purpose use, not automotive. Halogen-free status not explicitly stated in the verified web data; mark as unknown per Data Authenticity Rules.
