The **SFECF10M7FF00-R0** is a specific type of **Ceramic Filter** manufactured by Murata Electronics. These components are primarily used in the Intermediate Frequency (IF) stages of FM receivers to provide selectivity by allowing only a specific range of frequencies to pass through. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Center Frequency (fc)** | 10.700 MHz | | **3dB Bandwidth** | 280 kHz ± 50 kHz | | **Insertion Loss** | 3.0 dB ± 2.0 dB | | **Input/Output Impedance** | 330 $\Omega$ | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 3.45 x 3.10 x 1.40 mm | | **Operating Temperature** | -20°C to +80°C | --- ### 2. Functional Characteristics * **Selectivity:** The "10M7" in the part number indicates the center frequency of 10.7 MHz, which is the global standard for FM radio Intermediate Frequency. This filter ensures that adjacent radio stations do not interfere with the tuned signal. * **Piezoelectric Effect:** The device utilizes the mechanical resonance of piezoelectric ceramics to filter electrical signals. * **Small Footprint:** Being an "SFECF" series part, it is designed for high-density surface mounting, making it ideal for modern compact electronics. --- ### 3. Application Use Cases This component is typically found in: 1. **Consumer Radio Receivers:** Standard FM tuners and handheld radios. 2. **Automotive Infotainment:** Car radio systems requiring stable IF filtering. 3. **Communication Equipment:** Wireless data receivers operating within the FM band. --- ### 4. Part Number Breakdown (Murata System) `SF` `ECF` `10M7` `F` `F` `00` `-R0` * **SF:** Surface Mount Filter. * **ECF:** Specific series/structure designation. * **10M7:** Center frequency (10.7 MHz). * **F:** 3dB Bandwidth rank (F = 280 kHz). * **-R0:** Packaging code (usually refers to Tape & Reel).