The **CTLL2012-R22K** is a specific electronic component, primarily classified as a **Wire-wound Surface Mount (SMD) Chip Inductor**. Below is a detailed breakdown of its technical specifications and characteristics. ### 1. General Specifications The part number follows a standard naming convention for Central Technologies (or similar manufacturers). Here are the primary parameters: | Parameter | Specification | | :--- | :--- | | **Component Type** | Chip Inductor (Wire-wound) | | **Inductance Value** | 0.22 µH (Microhenries) | | **Tolerance** | ±10% (Indicated by the "K") | | **Package Size** | 2012 (Metric) / 0805 (Imperial) | | **Dimensions** | 2.0mm x 1.25mm | --- ### 2. Technical Characteristics As an inductor, its behavior is defined by its ability to store energy in a magnetic field and resist changes in current. * **Inductance (0.22 µH):** This is a relatively low inductance value, typically used for high-frequency filtering or decoupling. * **Tolerance (K = ±10%):** This represents the allowable deviation from the nominal 0.22 µH value during manufacturing. * **Construction:** The "Wire-wound" nature typically offers a higher **Quality Factor (Q)** and higher current-carrying capacity compared to multilayer ceramic inductors of the same size. * **Resonant Frequency (SRF):** Components in this range usually have a high Self-Resonant Frequency, making them suitable for RF (Radio Frequency) applications. --- ### 3. Common Applications Due to its small footprint (0805) and inductance value, the CTLL2012-R22K is commonly found in: 1. **RF Circuits:** Used in matching networks and high-frequency communication modules. 2. **Signal Conditioning:** Filtering noise in high-speed data lines. 3. **Mobile Devices:** Power management in smartphones, tablets, and wearables where space is limited. 4. **Decoupling:** Preventing high-frequency interference from affecting sensitive integrated circuits (ICs). --- ### 4. Part Number Decoding To understand the specific variant, the code can be broken down as follows: * **CTLL:** Series prefix (usually indicating a Wire-wound Low Profile Chip Inductor). * **2012:** Dimensions (2.0mm length x 1.25mm width). * **R22:** The inductance value. "R" acts as the decimal point (R22 = 0.22). * **K:** Tolerance code (J = 5%, K = 10%, M = 20%).