The **CSTCC2M70G56-R0** is a specific model of a **Ceramic Resonator** manufactured by Murata Electronics. It belongs to the CERALOCK® line, which is designed to provide timing signals for microprocessors and other integrated circuits. --- ### 1. Key Technical Specifications The part number encodes specific characteristics about its electrical behavior and physical form: | Feature | Specification | Description | | :--- | :--- | :--- | | **Oscillating Frequency** | 2.70 MHz | The base frequency at which the component vibrates. | | **Frequency Tolerance** | ±0.5% | The accuracy of the frequency at room temperature. | | **Load Capacitance** | 47 pF | Built-in capacitors (internal to the package). | | **Mounting Type** | SMD (Surface Mount) | Designed for automated PCB assembly. | | **Operating Temp Range**| -20°C to +80°C | The standard industrial temperature operating range. | | **Package Size** | 7.2mm x 3.0mm | Known as the "CC" package size in Murata's lineup. | --- ### 2. Internal Structure and Function The "G56" suffix indicates that this part includes **built-in load capacitors**. This is a significant advantage in electronic design for several reasons: * **Three-terminal Device:** Unlike a standard 2-pin crystal, this has three pins: Input, Output, and Ground. * **Space Saving:** Because the load capacitors are integrated inside the ceramic package, you do not need to place external capacitors on the PCB. * **Stability:** The ceramic material provides a stable mechanical vibration that is converted into an electrical signal via the piezoelectric effect. --- ### 3. Comparison: Ceramic Resonator vs. Quartz Crystal While both provide clock signals, the CSTCC series has distinct trade-offs: | Feature | Ceramic Resonator (CSTCC) | Quartz Crystal | | :--- | :--- | :--- | | **Cost** | Lower | Higher | | **Precision** | Moderate (±0.5%) | High (ppm levels) | | **Startup Time** | Very Fast | Slower | | **Size** | Smaller (Integrated Caps) | Larger (Requires external Caps) | --- ### 4. Typical Applications The CSTCC2M70G56-R0 is commonly used in high-volume consumer electronics where extreme precision (like a real-time clock) is not required, but cost and space are critical: * **Microcontrollers (MCU):** Providing the system clock for 8-bit or 16-bit processors. * **Remote Controls:** Infrared transmitters. * **Household Appliances:** Washing machine or microwave control boards. * **USB Peripherals:** Low-speed communication timing. --- ### 5. Termination and Packaging * **-R0 Suffix:** This usually indicates the packaging style, specifically **7-inch Reel** (Tape & Reel), intended for high-speed pick-and-place machines during manufacturing.