### CSTCE8M00G55Z-R0 Electronic Component Overview The **CSTCE8M00G55Z-R0** is a ceramic resonator from the CERALOCK® family, manufactured by **Murata Electronics**. It is primarily used as a clock source for microcontrollers (MCUs) in various consumer and industrial electronics. --- ### Technical Specifications | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 8.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Capacitance** | 33 pF (Internal) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 3.2 x 1.3 mm (Small Cap Chip) | | **Frequency Shift (Ageing)** | ±0.3% (over 10 years) | --- ### Key Internal Parts and Features #### 1. Ceramic Element The core component is a piezoelectric ceramic substrate. Unlike quartz crystals, which use silicon dioxide, ceramic resonators utilize the mechanical vibration of a ceramic material (Lead Zirconate Titanate) to generate a stable frequency. #### 2. Built-in Load Capacitors This specific part number belongs to the **CST** series, which includes **built-in load capacitors**. - **Advantage:** It eliminates the need for two external capacitors on the PCB, saving space and reducing component count. - **Circuitry:** It is a 3-pin device: Input, Ground, and Output. #### 3. Lead-free Construction The "Z-R0" suffix indicates that the part is compliant with environmental regulations (RoHS) and is provided on a 7-inch plastic tape-and-reel for automated pick-and-place assembly. --- ### Applications The 8MHz ceramic resonator is commonly found in: * **Microcontrollers:** Serving as the system clock for 8-bit or 32-bit MCUs. * **Automotive Electronics:** Infotainment systems and body control modules (due to the high-temperature rating). * **Consumer Goods:** Home appliances, remote controls, and toys. * **USB Peripherals:** Low-speed USB applications where extreme frequency precision (like that of a crystal) is not strictly required. --- ### Comparison: Ceramic Resonator vs. Quartz Crystal | Feature | Ceramic Resonator | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.001%) | | **Cost** | Low | High | | **Size** | Small (Built-in caps) | Larger (Requires external caps) | | **Start-up Time** | Very Fast | Slower |