## Overview of CDBKB455KCAY16-R0 The **CDBKB455KCAY16-R0** is a specialized electronic component manufactured by **Murata Manufacturing Co., Ltd.** It belongs to the family of **Ceramic Discriminators**. These components are primarily used for detection (demodulation) in FM (Frequency Modulation) circuits. --- ### 1. Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | Ceramic Discriminator | | **Center Frequency** | 455 kHz | | **Recovery Method** | Quadrature Detection | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 5.0 x 4.5 mm (approx.) | | **Mounting Style** | Tape & Reel (R0 suffix) | --- ### 2. Functional Description A ceramic discriminator like the CDBKB455KCAY16-R0 is designed to convert frequency changes into voltage changes. It is essential in the **Intermediate Frequency (IF)** stage of a radio receiver. * **Frequency Selection:** It is tuned specifically to 455 kHz, which is the standard IF for many AM/FM communication systems. * **Piezoelectric Effect:** It utilizes the mechanical vibration of ceramic material to provide high stability and a high Q-factor (quality factor). * **Demodulation:** It works alongside an IC (Integrated Circuit) to recover audio or data signals from a modulated FM carrier wave. --- ### 3. Key Applications This specific part is typically found in: 1. **Communication Equipment:** Two-way radios, walkie-talkies, and pagers. 2. **Cordless Phones:** Used in the older analog or specific digital cordless signal paths. 3. **Remote Control Systems:** Receivers that require precise frequency detection for command signals. 4. **FM Radio Receivers:** Narrow-band FM detection circuits. --- ### 4. Part Number Breakdown * **CDB:** Product code for Ceramic Discriminators. * **KB:** Type/Series designation. * **455:** Represents the center frequency (455 kHz). * **KCAY16:** Specific internal design parameters and tolerance codes. * **R0:** Packaging code (indicates 180mm diameter plastic tape/reel).