## CSTCG33M8V51-R0: Electronic Component Specification The **CSTCG33M8V51-R0** is a ceramic resonator from Murata’s **CERALOCK®** product line. It is commonly used as a frequency control component in microcontrollers and other digital circuits where high precision (like that of a quartz crystal) is not strictly required, but cost and space are critical. --- ### 1. General Specifications The part number encodes specific technical details about its operation: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Murata Manufacturing Co., Ltd. | | **Resonant Frequency** | 33.868 MHz | | **Frequency Tolerance** | ±0.5% | | **Operating Temperature** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | | **Package Size** | 2.0 x 1.3 mm (Small Form Factor) | --- ### 2. Key Features * **Built-in Load Capacitors:** Unlike standard quartz crystals that require external capacitors to form a resonant circuit, this "CERALOCK" part has internal capacitors. This reduces the component count on the PCB and saves space. * **High Stability:** It offers better stability than traditional RC (Resistor-Capacitor) oscillators while remaining more cost-effective than quartz crystals. * **Fast Startup:** Ceramic resonators typically have a faster oscillation startup time compared to quartz crystals. * **Small Footprint:** The "CG" series is designed for miniaturization in portable electronics. --- ### 3. Application Use Cases This specific frequency (33.868 MHz) and form factor are often found in: 1. **Audio/Video Equipment:** Often used in clock generation for CD/DVD players or digital audio interfaces. 2. **Microcontrollers:** Serving as the external clock source for high-speed MCUs. 3. **Communication Peripherals:** USB or Ethernet controllers that require specific clock frequencies. --- ### 4. Circuit Diagram Representation In a typical circuit, the component has 3 terminals: * **Input (Pin 1):** Connected to the MCU Oscillator Input (OSC_IN). * **Ground (Pin 2 - Center):** Connected to the system ground (GND). * **Output (Pin 3):** Connected to the MCU Oscillator Output (OSC_OUT). ```mermaid graph LR MCU_OSC_IN --- Pin1[Resonator Pin 1] GND --- Pin2[Resonator Pin 2 - Center] MCU_OSC_OUT --- Pin3[Resonator Pin 3] ``` ---