The **MHO328FCG-R** is an electronic component typically categorized as a **Surface Mount (SMD) High-Frequency Crystal Oscillator**. It is commonly used in telecommunications, networking, and consumer electronics to provide a stable clock signal for microprocessors and digital circuits. --- ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the primary technical attributes: | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Crystal Oscillator (SPXO) | | **Package Type** | SMD (Surface Mount Device) | | **Frequency Range** | Usually fixed (e.g., 25MHz, 50MHz, etc. - depends on specific suffix) | | **Operating Voltage** | Typically 3.3V or 5.0V | | **Output Type** | CMOS / TTL Compatible | | **Frequency Stability** | ±25ppm to ±100ppm | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | --- ### 2. Physical Characteristics The "MHO" series usually follows a standard metallic package design to ensure electromagnetic interference (EMI) shielding. * **Size:** Often utilizes the standard **7.0 x 5.0 mm** or **5.0 x 3.2 mm** footprint. * **Termination:** Gold-plated pads for high-reliability soldering. * **Sealing:** Hermetically sealed to protect the internal quartz crystal from moisture and atmospheric pressure changes. --- ### 3. Pin Configuration (Typical 4-Pin) Most oscillators in this category follow a standardized pinout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable (Tri-state) or No Connection | | **2** | GND | Ground connection | | **3** | Output | The generated clock signal (Square wave) | | **4** | Vdd | Positive power supply input | --- ### 4. Common Applications * **Networking:** Routers, switches, and modems requiring precise timing for data packets. * **Embedded Systems:** Providing the base clock for ARM or AVR microcontrollers. * **Industrial Control:** Reliable timing for PLCs and automation sensors. * **Storage:** SSD controllers and HDD interfaces. --- ### 5. Part Number Breakdown (General) * **MHO:** Series identifier (Miniature High-frequency Oscillator). * **3:** Usually denotes the voltage (e.g., 3.3V). * **28:** Can refer to the stability or specific package dimensions. * **FCG:** Frequency/Configuration code. * **R:** Usually indicates "RoHS Compliant" or "Tape & Reel" packaging.