The **CSTCV50M0X54Q-R0** is a specific type of electronic component known as a **Ceramic Resonator**. It is manufactured by **Murata Electronics** and belongs to the CERALOCK® family. These components are primarily used to provide a stable clock signal for microcontrollers and other digital circuits, serving as a cost-effective alternative to quartz crystals. --- ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Frequency** | 50.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% | | **Built-in Capacitance** | Yes (5 pF) | | **Mounting Type** | Surface Mount (SMD) | | **Package / Case** | 1206 (3.2mm x 1.6mm) | | **Operating Temperature** | -20°C to +80°C | | **Resonance Resistance** | 40 Ohms (Max) | --- ### 2. Key Internal Components The CSTCV series is unique because it is a "three-terminal" device. This means the electronic "parts" inside the small SMD package include more than just the vibrating ceramic element: * **Piezoelectric Ceramic Element:** The core part that vibrates at a specific frequency (50MHz) when an electric field is applied. * **Built-in Load Capacitors:** Unlike standard 2-pin crystals that require external capacitors to be soldered on the PCB, this part has two 5pF capacitors integrated inside the package. * **Alumina Substrate:** A high-quality ceramic base that supports the internal elements and provides thermal stability. --- ### 3. Circuit Application In a circuit, the middle pin is typically connected to **Ground (GND)**, while the two outer pins are connected to the `OSC_IN` and `OSC_OUT` pins of a microprocessor. #### Advantages of this Part: 1. **Space Saving:** No need for external load capacitors reduces the PCB footprint. 2. **High Frequency:** 50MHz is a high-speed clock for a ceramic resonator, suitable for fast data processing. 3. **Cost:** Significantly cheaper than a 50MHz quartz crystal oscillator. 4. **Durability:** More resistant to physical shock and vibration than thin quartz wafers. --- ### 4. Part Number Breakdown * **CSTCV**: Product Series (SMD Ceramic Resonator with built-in caps). * **50M0**: Frequency (50.00 MHz). * **X**: Frequency tolerance code (±0.5%). * **54**: Individual specification code. * **Q-R0**: Packaging code (Plastic tape and reel).