The **CSTCV24M0X51Q-R0** is a specific electronic component manufactured by **Murata Electronics**. It belongs to the **CERALOCK®** family, which are ceramic resonators used to provide stable clock signals for microcontrollers and other digital circuits. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 24.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% | | **Capacitance (Built-in)** | 5 pF (Standard) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 3.7 x 3.1 x 1.2 mm | --- ### 2. Physical Structure and Pins The "CSTCV" series is a **three-terminal** device. Unlike standard two-pin crystals, these ceramic resonators include internal load capacitors, which simplifies the PCB design. * **Pin 1:** Input (Connected to MCU OSC_IN) * **Pin 2:** Ground (GND) * **Pin 3:** Output (Connected to MCU OSC_OUT) ### 3. Core Features * **Built-in Capacitance:** The "V" in the part number indicates it includes load capacitors. This eliminates the need for two external capacitors, saving space and reducing BOM (Bill of Materials) costs. * **High Temperature Rating:** The "Q" suffix often denotes automotive grade or high-reliability specifications, allowing it to operate in harsh environments up to 125°C. * **Fast Startup:** Ceramic resonators typically have a faster startup time compared to quartz crystals, which is beneficial for low-power applications that wake up frequently from sleep mode. ### 4. Part Number Breakdown (Nomenclature) | Segment | Meaning | | :--- | :--- | | **CSTCV** | Surface Mount Ceramic Resonator with Built-in Capacitance | | **24M0** | 24.000 MHz Frequency | | **X** | Specific frequency tolerance/stability code | | **51** | Internal Load Capacitance code (5 pF) | | **Q** | Operating Temperature/Automotive Grade | | **-R0** | Packaging (Tape and Reel) | --- ### 5. Application Areas 1. **Automotive Systems:** Engine Control Units (ECUs), dashboard displays, and sensor modules. 2. **Microcontrollers:** Serving as the main clock source for 8-bit to 32-bit MCUs. 3. **Communication:** USB peripherals and high-speed serial data processing where ±0.5% tolerance is acceptable.