The **CS160808-R27K** is a surface-mount (SMD) multilayer ceramic chip inductor. It is commonly used in high-frequency circuits for filtering, decoupling, and impedance matching. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. Part Number Deciphering The alphanumeric code follows a standard industry format for passive components: | Segment | Meaning | Value | | :--- | :--- | :--- | | **CS** | Series Code | Multilayer Chip Inductor | | **160808** | Case Size (EIA) | 0603 (1.6mm x 0.8mm x 0.8mm) | | **R27** | Inductance Value | 0.27 µH (or 270 nH) | | **K** | Tolerance | ±10% | --- ### 2. Technical Specifications These parts are designed for low-power signal conditioning and RF applications. * **Inductance:** 0.27 µH (270 nH) * **Test Frequency:** Typically measured at 25 MHz. * **DC Resistance (DCR):** Usually ranges between 0.45Ω to 0.60Ω (max). * **Rated Current:** Approximately 100mA to 300mA (depending on specific manufacturer temperature rise). * **Self-Resonant Frequency (SRF):** High SRF, typically above 150 MHz, allowing it to function as an inductor in high-speed circuits. * **Operating Temperature:** -55°C to +125°C. --- ### 3. Construction and Features The "Multilayer" technology distinguishes this part from wire-wound inductors. * **Internal Structure:** It consists of a ceramic body with internal screen-printed conductive layers (usually silver) that form a spiral coil. * **Magnetic Shielding:** Because the coil is embedded within the ceramic body, it is naturally self-shielded, reducing electromagnetic interference (EMI) with neighboring components. * **Durability:** No moving parts or exposed wires make it highly resistant to mechanical shock and vibration. --- ### 4. Typical Applications The CS160808-R27K is primarily found in small consumer electronics like smartphones, tablets, and wearable tech: 1. **RF Resonance:** Used in LC circuits for frequency selection. 2. **EMI Suppression:** Filtering high-frequency noise out of signal lines. 3. **Impedance Matching:** Ensuring maximum power transfer between an antenna and an RF transceiver. 4. **Decoupling:** Preventing high-frequency noise from entering sensitive IC power pins. ---