The **CV201210-R27K** is a surface-mount (SMD) multilayer chip inductor manufactured by Bourns. It is part of the CV201210 series, which is designed for high-frequency applications where miniaturization and reliability are critical. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.27 µH (270 nH) | | **Tolerance** | ±10% (Indicated by 'K') | | **Case Size (EIA)** | 0805 | | **Case Size (Metric)** | 2012 (2.0 mm x 1.25 mm) | | **Quality Factor (Q)** | 20 (Minimum) | | **Self-Resonant Frequency** | 165 MHz | | **DC Resistance (DCR)** | 0.45 Ω (Maximum) | | **Rated Current** | 300 mA | | **Operating Temperature** | -55°C to +125°C | --- ### ### Key Features and Construction 1. **Multilayer Structure:** Unlike wire-wound inductors, this part is constructed using integrated layers of ceramic and conductive material. This results in a magnetic shield that minimizes electromagnetic interference (EMI) and crosstalk. 2. **Size (0805/2012):** The 201210 designation refers to the dimensions ($2.0 \times 1.25 \times 1.0$ mm). This compact footprint is ideal for high-density PCB designs. 3. **High Reliability:** The monolithic structure provides excellent heat resistance and high mechanical strength, making it suitable for automated assembly lines. --- ### ### Common Applications This inductor is typically used in low-power signal processing and filtering tasks: * **Mobile Electronics:** Used in smartphones and tablets for signal decoupling. * **RF Modules:** Matching circuits for Bluetooth, Wi-Fi, and GPS modules. * **Noise Suppression:** General-purpose filtering in high-frequency data lines to prevent EMI. * **DC/DC Converters:** Low-current voltage regulation stages. --- ### ### Part Number Breakdown Understanding the nomenclature helps in identifying similar components: | Segment | Meaning | | :--- | :--- | | **CV201210** | Series and Case Size ($2.0 \times 1.25 \times 1.0$ mm) | | **R27** | Inductance Value (R acts as decimal: 0.27 µH) | | **K** | Tolerance Code (K = ±10%) |