## Overview: SFECF10M7HA00-R0 The **SFECF10M7HA00-R0** is a specific type of **Ceramic Filter** manufactured by **Murata Electronics**. It belongs to the CERALOCK® / SFECF series, which are surface-mount devices (SMD) primarily used as Intermediate Frequency (IF) filters in FM receivers. --- ### 1. Key Technical Specifications | Parameter | Value / Specification | | :--- | :--- | | **Component Type** | Ceramic Filter | | **Center Frequency** | 10.700 MHz | | **Bandwidth (3dB)** | 280 kHz ± 50 kHz | | **Insertion Loss** | 3.0 dB ± 2.0 dB | | **Input/Output Impedance** | 330 $\Omega$ | | **Operating Temperature** | -20°C to +80°C | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 3.45 x 3.10 x 1.40 mm | --- ### 2. Functional Description Ceramic filters like the SFECF10M7HA00-R0 utilize the **piezoelectric effect**. The device converts electrical signals into mechanical vibrations and back into electrical signals. Because the material has a specific resonance, it only allows a narrow band of frequencies (centered around 10.7 MHz) to pass through, effectively filtering out noise and adjacent channel interference. #### Role in Electronic Circuits: * **IF Filtering:** It is the standard component for the 10.7 MHz Intermediate Frequency stage in FM radio circuitry. * **Selectivity:** It helps the receiver distinguish between the desired radio station and signals on neighboring frequencies. * **Size Reduction:** The SFECF series is designed to be extremely thin, making it ideal for compact portable electronics. --- ### 3. Part Number Breakdown (Nomenclature) Understanding the Murata part number helps identify its specific characteristics: * **SFECF:** Series name for Surface Mount Ceramic Filters (10.7MHz Small Type). * **10M7:** Represents the Center Frequency (10.7 MHz). * **HA00:** Refers to the specific passband characteristics and technical designators. * **-R0:** Indicates the packaging style (usually Tape and Reel). --- ### 4. Typical Applications 1. **Consumer Electronics:** FM radio receivers in smartphones, portable MP3 players, and automotive head units. 2. **Communication Equipment:** Wireless data transceivers that utilize the 10.7 MHz IF stage. 3. **Tuners:** Digital and analog broadcasting tuners. ---