The **CDSCB10M7GA085-R0** is a specific type of ceramic resonator produced by **Murata Manufacturing**. It is primarily used in communication equipment and consumer electronics for frequency control and timing. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Component Type** | Ceramic Resonator (CERALOCK®) | | **Nominal Frequency** | 10.7 MHz | | **Frequency Tolerance** | ±30 kHz (Standard for FM applications) | | **Mounting Type** | SMD (Surface Mount Device) | | **Package Size** | 4.5 x 2.0 mm (approx.) | | **Operating Temperature** | -20°C to +80°C | --- ### 2. Electronic Function and Role A ceramic resonator functions similarly to a quartz crystal but uses **piezoelectric ceramics** (typically lead zirconate titanate). Its primary roles include: * **Frequency Generation:** It provides a stable clock signal for microcontrollers or ICs. * **IF Filtering:** In radio applications, it acts as an Intermediate Frequency (IF) filter for 10.7 MHz signals, which is the standard IF for FM radio broadcasting. * **Oscillation:** When paired with an inverter or an internal oscillator circuit of an IC, it creates a stable sine or square wave. ### 3. Comparison: Ceramic Resonator vs. Quartz Crystal It is important to understand why this specific part might be chosen over a crystal: 1. **Cost:** Ceramic resonators like the CDSCB series are generally cheaper than quartz crystals. 2. **Size:** The SMD form factor is extremely low-profile, saving PCB space. 3. **Stability:** While quartz crystals are more precise (measured in ppm), ceramic resonators offer sufficient stability (measured in %) for many consumer applications at a lower price point. 4. **Built-in Capacitance:** Many CERALOCK® models include internal load capacitors, simplifying the circuit design by removing the need for external capacitors. --- ### 4. Typical Applications * **FM Radio Receivers:** Used in the discriminator or IF stage. * **Microcontrollers:** Providing the clock source for low-to-medium speed processing. * **Remote Controls:** Generating carrier frequencies. * **Automotive Electronics:** Used in non-safety critical systems like infotainment.