The **MHO+37TFG-R** is a specific series classification for a **Quartz Crystal Oscillator**, typically manufactured by companies like **Mercury Electronic**. These components are fundamental in electronics for generating precise clock signals and timing frequencies. --- ## 1. Component Overview The "MHO" series generally refers to high-stability crystal oscillators housed in a **Half-Size DIP (Dual In-line Package)**. This specific part is designed for through-hole mounting on printed circuit boards (PCBs). ### Key Technical Specifications | Feature | Typical Specification | | :--- | :--- | | **Package Type** | 8-pin Half-size DIP (4 pins used) | | **Frequency Range** | Usually 1.0 MHz to 150.0 MHz (Check specific suffix) | | **Supply Voltage** | 3.3V or 5.0V (Standard) | | **Output Logic** | HCMOS / TTL Compatible | | **Stability** | ±25ppm to ±100ppm | | **Operating Temp** | -10°C to +70°C (Standard) or -40°C to +85°C (Industrial) | --- ## 2. Pin Configuration (Half-Size DIP) Though the casing looks like an 8-pin chip, only 4 pins are physically present or functional: 1. **Pin 1 (NC or OE):** No Connection or Output Enable (Tristate function). 2. **Pin 4 (GND):** Ground connection to the case. 3. **Pin 5 (Output):** The clock signal output. 4. **Pin 8 (Vcc):** Positive power supply input. --- ## 3. Breakdown of the Part Number The alphanumeric string follows a specific coding convention: * **MHO:** Series identifier (Mercury High Output / Half-size DIP). * **+:** Often indicates RoHS Compliance (Lead-free). * **3:** Represents the voltage (e.g., 3.3V). * **7:** Indicates frequency stability (e.g., ±25ppm). * **T:** Represents the Output Enable (Tristate) function. * **FG:** Temperature range and frequency code. * **R:** Tape and Reel packaging or a specific revision code. --- ## 4. Common Applications Because of its high precision and metal shielding (which reduces Electromagnetic Interference), the MHO+37TFG-R is found in: * **Microcontrollers:** Providing the main system heartbeat. * **Networking Gear:** Modems, routers, and switches. * **Industrial Control:** Timing for PLCs and automated machinery. * **Legacy Hardware:** Maintenance of older computing systems using DIP footprints. ---