The **CSTCC2M50G56Z-R0** is a specific surface-mount (SMD) ceramic resonator manufactured by **Murata Electronics**. It belongs to the CERALOCK® family, which is widely used as a timing source for microprocessors and other digital integrated circuits. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Product Category** | Ceramic Resonator | | **Oscillation Frequency** | 2.500 MHz | | **Frequency Tolerance** | ±0.5% | | **Frequency Stability** | ±0.3% | | **Operating Temperature** | -20°C to +80°C | | **Built-in Capacitance** | 47 pF (Internal load capacitors) | | **Mounting Style** | SMD (Surface Mount Device) | | **Package Type** | Non-washable, Small Cap Chip (CC) | --- ### 2. Functional Details #### Internal Capacitance The "56" in the part number indicates that this model includes **built-in load capacitors**. This is a significant design advantage because: * It eliminates the need for two external capacitors on the PCB. * It reduces the overall footprint of the timing circuit. * It simplifies the matching process between the resonator and the IC. #### Accuracy vs. Crystals Compared to Quartz crystals, ceramic resonators like the CSTCC2M50G56Z-R0 offer: * **Faster Start-up Time:** They reach stable oscillation much quicker than crystals. * **Durability:** Higher resistance to mechanical shock and vibration. * **Cost:** Generally more affordable than high-precision crystals. * **Tolerance:** They have wider frequency tolerances (±0.5%) compared to crystals (typically measured in PPM), making them suitable for general-purpose microcontrollers but not for high-speed communication (like Ethernet). --- ### 3. Application Examples This part is typically found in: * **Consumer Electronics:** Remote controls, toys, and small appliances. * **Microcontrollers:** Serving as the clock source for 8-bit or 16-bit MCUs (e.g., PIC or AVR series). * **Peripherals:** Disc drives and basic USB interfaces. --- ### 4. Part Number Breakdown A brief look at how Murata codes these parts: * **CSTCC:** Product Series (SMD with built-in caps). * **2M50:** Frequency (2.50 MHz). * **G:** Frequency tolerance code. * **56:** Load capacitance code (47pF). * **R0:** Packaging code (Plastic Tape and Reel).