## Technical Overview: CSTCC2M40G53-R0 The **CSTCC2M40G53-R0** is a specific model of a **Ceramic Resonator** manufactured by Murata Electronics. These components are used to provide a stable clock signal for microcontrollers and other digital circuits, serving as a cost-effective and compact alternative to quartz crystals. --- ### 1. Key Specifications The technical parameters of this component are summarized in the table below: | Parameter | Specification | | :--- | :--- | | **Oscillating Frequency** | 2.40 MHz | | **Frequency Tolerance** | ±0.5% | | **Built-in Capacitance** | 15 pF (C1 and C2) | | **Resonance Resistance** | 50 Ω (Max) | | **Temperature Range** | -20°C to +80°C | | **Package Type** | SMD (Surface Mount Device) | | **Dimensions** | 7.2 x 3.0 mm (Approx.) | --- ### 2. Physical Structure and Pins The CSTCC series is known as a **"CERALOCK"** resonator with built-in load capacitors. This simplifies the PCB design because it eliminates the need for external capacitors. * **Pin 1:** Input/Output * **Pin 2:** Ground (GND) - *Essential for the internal capacitors* * **Pin 3:** Output/Input --- ### 3. Functional Advantages * **Built-in Capacitance:** Unlike standard crystals that require two external capacitors to create an oscillation circuit, this part integrates them internally. This saves board space and reduces BOM (Bill of Materials) costs. * **Small Footprint:** The SMD design allows for automated pick-and-place assembly. * **Stability:** While not as precise as a quartz crystal, it is much more stable than an internal RC (Resistor-Capacitor) oscillator found inside many MCUs. --- ### 4. Common Applications This specific frequency (2.40 MHz) is often used in: 1. **Consumer Electronics:** Remote controls, toys, and small appliances. 2. **Microcontrollers:** Serving as the external clock source for 8-bit or 16-bit MCUs. 3. **Communication:** Low-speed data processing units. --- ### 5. Part Number Breakdown The alphanumeric code provides specific details: * **CSTCC:** Product Series (SMD type with built-in capacitors). * **2M40:** Frequency (2.40 MHz). * **G:** Frequency tolerance code. * **53:** Specific design/structure code. * **-R0:** Packaging code (usually refers to Tape and Reel).