The **CSTCG25M0V53-R0** is a miniature **Ceramic Resonator** manufactured by Murata Electronics. It belongs to the CERALOCK® family, designed to provide a stable clock signal for microprocessors and other integrated circuits. --- ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 25.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Temperature Stability** | ±0.3% | | **Operating Temperature** | -20°C to +80°C | | **Built-in Capacitance** | Yes (Built-in load capacitors) | | **Capacitance Value** | 10 pF (standard for this series) | | **Package Size** | 2.0 x 1.3 mm (SMD) | | **Mounting Type** | Surface Mount (SMT) | --- ### 2. Functional Details #### A. Internal Structure Unlike a standard quartz crystal that requires external load capacitors to form an oscillation circuit, the **CSTCG** series features **built-in load capacitors**. This reduces the component count on the PCB and saves space. #### B. Piezoelectric Effect It utilizes the mechanical resonance of a piezoelectric ceramic material. When an electrical signal is applied, the ceramic vibrates at its natural frequency (25MHz), which is then fed back into the IC's oscillator circuit to maintain a steady clock pulse. #### C. Comparison: Resonator vs. Crystal * **Size:** This ceramic resonator is significantly smaller than most HC-49 or large SMD crystals. * **Accuracy:** It is less precise than a quartz crystal (±0.5% vs ±0.005%) but much more affordable. * **Startup Time:** It has a faster startup time compared to quartz crystals. --- ### 3. Application Use-Cases The CSTCG25M0V53-R0 is typically used in high-volume consumer electronics where extreme precision (like timing for a real-time clock) is not as critical as cost and size: 1. **USB Peripherals:** Providing clock signals for USB 2.0/3.0 controllers. 2. **Microcontrollers (MCUs):** Serving as the external clock source for small 8-bit or 32-bit MCUs. 3. **Home Appliances:** Control boards for washing machines or microwave ovens. 4. **Audio/Visual Equipment:** Found in remote controls and portable media players. --- ### 4. Circuit Diagram Representation In a standard circuit, the device has three pins: * **Pin 1:** Input (Oscillator In) * **Pin 2:** Ground (Common) * **Pin 3:** Output (Oscillator Out) ```text [ MCU ] / \ OSC_IN OSC_OUT | | (1)-------(3) | (2) | [GND] ```