## Technical Overview: CSTCE12M0G15L99-R0 The **CSTCE12M0G15L99-R0** is a specific model of a **Ceramic Resonator** manufactured by **Murata Electronics**. It belongs to the CERALOCK® family, which are high-precision components used to provide a stable clock signal for microcontrollers and other digital circuits. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 12.000 MHz | | **Frequency Tolerance** | ±0.1% | | **Built-in Capacitance** | 33 pF (Internal Load Caps) | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 3.2 x 1.3 mm | | **Operating Temperature** | -40°C to +125°C | | **Frequency Aging** | ±0.1% / 10 years | --- ### 2. Functional Description #### Built-in Capacitors Unlike traditional crystals that often require external loading capacitors to oscillate, this component features **integrated load capacitors**. This simplifies the PCB design, saves space, and reduces the Bill of Materials (BOM) cost. #### Piezoelectric Effect It functions based on the mechanical vibration of a piezoelectric ceramic material. When an electrical signal is applied, the ceramic vibrates at its resonant frequency (12 MHz), which is then used to synchronize the timing of digital systems. --- ### 3. Application Use Cases This part is commonly found in: * **Automotive Electronics:** Infotainment systems, cluster displays, and comfort modules (due to the high-temperature rating). * **Consumer Electronics:** Remote controls, white goods (washers/dryers), and small appliances. * **Microcontrollers:** Serving as the external clock source for MCUs that require higher precision than internal RC oscillators but lower cost than quartz crystals. --- ### 4. Comparison: Ceramic Resonator vs. Quartz Crystal | Feature | Ceramic Resonator | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.1% to 0.5%) | High (ppm levels) | | **Start-up Time** | Very Fast | Slow | | **Size** | Small/Thin | Larger | | **Cost** | Low | High | | **Durability** | High (Vibration resistant) | Fragile | --- ### 5. Part Number Breakdown (Murata Logic) * **CSTCE**: Series (SMD type with built-in caps). * **12M0**: Frequency (12.000 MHz). * **G**: Frequency tolerance code. * **15**: Load capacitance code. * **R0**: Packaging code (Plastic Tape/Reel).