The **SFSCE10M7WF05-R0** is a specialized electronic component manufactured by **Murata Electronics**. It belongs to the family of **Ceramic Filters**, specifically designed for use in FM intermediate frequency (IF) stages. --- ### 1. Technical Specifications The following table highlights the core electrical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Center Frequency (fo)** | 10.700 MHz | | **3dB Bandwidth** | 280 kHz ± 50 kHz | | **Insertion Loss** | 3.0 dB ± 2.0 dB | | **Input/Output Impedance** | 330 $\Omega$ | | **Temperature Range** | -20°C to +80°C | | **Package Type** | Surface Mount Device (SMD) | --- ### 2. Part Number Breakdown Understanding the Murata naming convention helps in identifying the component's role: * **SF**: Surface Filter. * **SCE**: Specific series code for miniaturized ceramic filters. * **10M7**: Represents the frequency (10.7 MHz), which is the standard IF for FM radio globally. * **WF05**: Indicates the bandwidth and design variation (Wide-band type). * **-R0**: Denotes the packaging style (usually Taping and Reel for automated assembly). --- ### 3. Functional Role and Applications Ceramic filters like the SFSCE10M7WF05-R0 utilize the **piezoelectric effect** to allow specific frequencies to pass while attenuating others. #### Key Applications: 1. **FM Radio Receivers:** Used in the IF stage to select the desired broadcast signal and reject noise from adjacent channels. 2. **Communication Equipment:** Integrated into wireless transceivers where a stable 10.7 MHz reference is required. 3. **Automotive Audio:** Often found in car stereo tuners due to its compact SMD footprint and vibration resistance. --- ### 4. Circuit Integration Example In a typical receiver circuit, the filter is placed between the mixer and the IF amplifier. Below is a simplified logic representation: ```text [Antenna] -> [RF Amp] -> [Mixer] -> [SFSCE10M7WF05-R0 Filter] -> [IF Amp] -> [Demodulator] ^ [Local Oscillator] ``` ---