The **SFSCE10M7WF04-R0** is a Surface Mount (SMD) **Ceramic Filter** manufactured by Murata Electronics. It is specifically designed for the intermediate frequency (IF) stages of communication equipment, particularly in FM radio applications. --- ## 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Center Frequency (fo)** | 10.700 MHz | | **Bandwidth (3dB)** | 230 kHz ± 50 kHz | | **Insertion Loss** | 3.0 dB to 4.5 dB (Max) | | **Spurious Response** | 35 dB Min | | **Input/Output Impedance** | 330 $\Omega$ | | **Operating Temperature** | -20°C to +80°C | | **Package Type** | SMD (Small Footprint) | --- ## 2. Key Features and Construction ### Ceramic Technology The device utilizes the **piezoelectric effect** of ceramics. It converts electrical signals into mechanical vibrations at a specific frequency and then back into electrical signals. This allows it to "filter out" unwanted frequencies while letting the 10.7 MHz signal pass through. ### Design Benefits * **High Selectivity:** Effectively separates the desired FM signal from adjacent channel interference. * **Low Profile:** The SMD design is optimized for automated pick-and-place assembly in modern compact electronics. * **Stable Frequency:** Highly resistant to environmental changes like temperature drifts or mechanical shocks. --- ## 3. Typical Applications The SFSCE series is primarily found in the **IF (Intermediate Frequency) section** of: 1. **FM Receivers:** Home stereos, car radios, and portable players. 2. **Wireless Data Modules:** Low-speed data transmission systems. 3. **Communication Base Stations:** For signal processing at the 10.7 MHz band. --- ## 4. Circuit Symbol and Connection In a schematic, this component is represented as a three-terminal filter: * **Input Pin:** Receives the IF signal from the mixer. * **Ground Pin:** Common reference. * **Output Pin:** Sends the filtered signal to the FM demodulator stage. ---