## Technical Analysis of CSTCW24M0X53-R0 The **CSTCW24M0X53-R0** is a specific surface-mount **Ceramic Resonator** manufactured by **Murata Electronics**. It belongs to the CERALOCK® product line and is commonly used as a frequency control component in microcontrollers and timing circuits. --- ### 1. Key Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 24.000 MHz | | **Frequency Tolerance** | ±0.5% | | **Resonant Impedance** | 60 $\Omega$ (max) | | **Built-in Capacitance** | 15 pF (Internal load caps) | | **Operating Temperature** | -20°C to +80°C | | **Package Type** | SMD (2.5 x 2.0 mm) | | **Frequency Stability** | ±0.3% over temp range | --- ### 2. Functional Description Unlike a standard 2-pin crystal, this ceramic resonator is a **3-pin device**. * **Internal Load Capacitors:** The "Built-in Capacitance" means it integrates two load capacitors inside the package. This eliminates the need for external capacitors on your PCB, saving space and reducing BOM (Bill of Materials) count. * **Pin Configuration:** 1. **Input** (Frequency In) 2. **Ground** (Middle pin, connected to the internal capacitors) 3. **Output** (Frequency Out) --- ### 3. Application Areas This specific frequency (24 MHz) is a standard clock speed for various digital systems: * **Microcontrollers (MCUs):** Providing the system clock for 8-bit or 32-bit processors. * **USB Peripherals:** Often used in USB 2.0 full-speed devices where 24MHz or 48MHz (via PLL) is required. * **Consumer Electronics:** Remote controls, toys, and small appliances where extreme precision (like that of a TCXO) is not required. * **Automotive/Industrial:** Used in non-safety critical communication modules. --- ### 4. Comparison: Ceramic Resonator vs. Quartz Crystal | Feature | Ceramic Resonator (CSTCW) | Quartz Crystal (XTAL) | | :--- | :--- | :--- | | **Cost** | Lower | Higher | | **Size** | Very Small (integrated caps) | Larger (needs external caps) | | **Start-up Time** | Very Fast (ms) | Slower | | **Precision** | Lower (±0.5%) | Higher (±0.001%) | --- ### 5. Part Number Breakdown * **CSTCW:** Series name (SMD Ceramic Resonator with built-in caps). * **24M0:** 24.000 Megahertz frequency. * **X:** Designates the specific series/packaging variation. * **53:** Frequency tolerance and temperature characteristic code. * **R0:** Packaging code (Plastic Tape and Reel).