The **CSTCC3M28G53A-R0** is a specific type of electronic component known as a **Ceramic Resonator** with built-in load capacitors. It is manufactured by Murata Electronics and is primarily used for timing and frequency control in microcontrollers and digital circuits. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Part Number** | CSTCC3M28G53A-R0 | | **Component Type** | Ceramic Resonator (CERALOCK®) | | **Nominal Frequency** | 3.28 MHz | | **Frequency Tolerance** | ±0.5% | | **Loading Capacitance** | 15 pF (Built-in) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -20°C to +80°C | | **Package / Case** | 3-SMD (Non-standard) | --- ### 2. Physical Structure and Pinout Unlike standard 2-pin crystals, this part has **3 pins** because it integrates the necessary load capacitors internally. 1. **Input Pin:** Connected to the oscillator input of the IC. 2. **Ground Pin:** The center pin, which must be connected to the circuit's ground. 3. **Output Pin:** Connected to the oscillator output of the IC. --- ### 3. Core Features & Advantages * **Built-in Capacitance:** By including internal 15pF capacitors, it saves PCB space and reduces the total component count. * **Small Footprint:** The "CSTCC" series is designed for low-profile applications. * **Cost-Effective:** Ceramic resonators are generally cheaper than quartz crystals, though they offer slightly lower frequency stability. * **Fast Start-up:** These resonators typically reach stable oscillation faster than quartz equivalents. --- ### 4. Typical Applications This component is commonly found in consumer electronics where high precision (like atomic clock accuracy) isn't required, but cost and size are critical: * **Microcontrollers (MCU):** Providing the clock signal for 8-bit or 16-bit processors. * **Household Appliances:** Controllers for washing machines, microwaves, or refrigerators. * **Remote Controls:** Generating the carrier frequency for IR signals. * **Toys and Gadgets:** General digital logic timing.