The **CDSCB10M7GF072-R0** is a specific type of electronic component known as a **Ceramic Discriminator**, manufactured by Murata Manufacturing. It is primarily used in communication equipment for demodulating FM signals. --- ## 1. Technical Specifications The part belongs to the **CDB/CDSCB** series, which are surface-mount (SMD) piezoelectric components designed to work in conjunction with FM Intermediate Frequency (IF) ICs. | Parameter | Specification | |:---|:---| | **Nominal Center Frequency** | 10.700 MHz | | **Frequency Tolerance** | ±30 kHz | | **3dB Bandwidth** | 150 kHz min. | | **Recovery Voltage** | 450 mV min. | | **Distortion Factor** | 1.0% max. | | **Operating Temperature** | -20°C to +80°C | | **Package Type** | SMD (1812 size / 4.5 x 3.2 mm) | --- ## 2. Component Functionality A ceramic discriminator acts as a frequency-to-voltage converter. In an FM receiver circuit, it performs the following roles: * **Demodulation:** It extracts the original audio or data signal from a frequency-modulated 10.7 MHz carrier. * **Phase Shifting:** It utilizes the mechanical resonance of the piezoelectric ceramic material to create a specific phase shift required by the FM detector circuit inside the receiver IC. * **Replacement for LC Coils:** Unlike traditional inductor-capacitor (LC) tuned circuits, this ceramic part requires no manual tuning, is much smaller, and offers better thermal stability. --- ## 3. Physical Construction and Application ### Internal Structure The device is composed of a high-stability piezoelectric ceramic element housed in a resin-sealed or ceramic-cased SMD package. The "GF" in the part number typically refers to specific bandwidth and temperature characteristics tailored for narrow or standard FM applications. ### Common Applications 1. **FM Radios:** Standard broadcast receivers. 2. **Cordless Phones:** Analog transmission stages. 3. **Wireless Data Transceivers:** Low-speed data modulation/demodulation. 4. **Two-way Radios:** Walkie-talkies operating in the VHF/UHF bands using a 10.7 MHz IF. --- ## 4. Part Number Breakdown While Murata part numbers are complex, the code generally breaks down as follows: * **CDSCB:** Series code (Ceramic Discriminator, Surface Mount). * **10M7:** Center frequency (10.7 MHz). * **GF:** Bandwidth/Characteristics code. * **R0:** Packaging code (usually refers to Tape & Reel).