The **CSTCE8M38G52-R0** is a miniature surface-mount (SMD) ceramic resonator produced by **Murata Manufacturing Co., Ltd.** It is part of the **CERALOCK®** product line, specifically the CSTCE series, which integrates load capacitors into a single package to save PCB space. --- ## 1. Technical Specifications The following table highlights the core electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 8.388608 MHz (approx. 8.38 MHz) | | **Frequency Tolerance** | ±0.5% | | **Operating Temperature** | -20°C to +80°C | | **Load Capacitance** | 10 pF (Internal) | | **Package Size** | 3.2 x 1.3 mm (EIA 1205) | | **Mounting Type** | Surface Mount (SMD) | | **Series** | CSTCE (CERALOCK®) | --- ## 2. Key Internal Components Unlike a standard quartz crystal, this ceramic resonator includes three functional elements inside its tiny package: * **Ceramic Piezoelectric Element:** The core material that vibrates at a specific frequency (8.38 MHz) when an alternating voltage is applied. * **Built-in Load Capacitors:** This part features "built-in" capacitance (10 pF). This eliminates the need for two external capacitors on your PCB, reducing the component count and the overall footprint. * **Alumina Substrate:** The base material that provides mechanical stability and heat resistance during reflow soldering. --- ## 3. Comparison: Ceramic Resonator vs. Quartz Crystal It is important to understand why this specific part might be chosen over a crystal: | Feature | Ceramic Resonator (CSTCE) | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.001% - ±0.005%) | | **Startup Time** | Very Fast | Slower | | **Cost** | Low | Higher | | **Integration** | Includes Capacitors | Requires External Caps | | **Stability** | Moderate | Excellent | --- ## 4. Typical Applications The frequency of **8.388 MHz** is often used as a clock source for microcontrollers (MCUs) in consumer electronics where extreme precision (like a real-time clock) is not required, but cost and space are critical. Common uses include: * USB peripherals. * Home appliances (Washing machines, Microwaves). * Remote controls. * General-purpose MCU clocking. ---