The **CSTCC2M50G56-R0** is a ceramic resonator manufactured by **Murata Electronics**. It is a passive component used to generate a stable clock frequency for microcontrollers, timers, and other digital circuits. --- ## 1. Technical Specifications The table below summarizes the key electrical and physical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Type** | Ceramic Resonator | | **Frequency** | 2.50 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Capacitance** | 47 pF (Internal load capacitors) | | **Mounting Type** | Surface Mount (SMD) | | **Package / Case** | 3-SMD, Non-Standard (CSTCC Series) | | **Operating Temperature** | -20°C to +80°C | | **Frequency Stability** | ±0.3% over temperature | --- ## 2. Internal Structure and Design Unlike basic quartz crystals, the CSTCC series features a **built-in load capacitance**. This offers several advantages: * **Space Saving:** No need for external ceramic capacitors on the PCB. * **Cost Effective:** Reduces the total Bill of Materials (BOM) count. * **Simplification:** Reduces the complexity of the oscillator circuit design. ### Pin Configuration The device typically has 3 terminals: 1. **Input:** Connected to the oscillator inverter input. 2. **Ground:** Connected to the system ground (common for internal capacitors). 3. **Output:** Connected to the oscillator inverter output. --- ## 3. Applications The 2.50 MHz frequency is commonly used in low-to-mid speed processing environments: * **Microcontrollers:** Serving as the external clock source for 8-bit or 16-bit MCUs. * **Consumer Electronics:** Remote controls, toys, and small appliances. * **Communication Equipment:** Timing for low-speed data protocols. --- ## 4. Key Differences: Resonators vs. Crystals | Feature | Ceramic Resonator (CSTCC) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.001%) | | **Start-up Time** | Very Fast | Slower | | **Price** | Low | Higher | | **Durability** | High shock/vibration resistance | Fragile | ---