The **MAH72TAX-R** is a specific electronic component typically categorized as a **Surface Mount Device (SMD) Quartz Crystal Oscillator**. It is widely used in telecommunications, networking, and consumer electronics to provide a precise clock signal for integrated circuits. --- ### 1. Key Technical Specifications Based on standard industry nomenclature for this series, here are the technical characteristics: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (SPXO) | | **Package Size** | 7.0 x 5.0 mm | | **Mounting Type** | Surface Mount (SMD) | | **Operating Voltage** | Typically 3.3V (varies by sub-series) | | **Output Type** | CMOS / HCMOS | | **Frequency Stability** | ±25ppm to ±100ppm (depending on grade) | | **Pin Count** | 4-Pin | --- ### 2. Physical Construction and Pins The device is housed in a hermetically sealed ceramic package with a metal lid to protect the internal quartz crystal from environmental interference. 1. **Pin 1 (Enable/Disable):** Often used for Tri-state function (turning the output on or off to save power). 2. **Pin 2 (Ground):** Connected to the system common ground. 3. **Pin 3 (Output):** Delivers the stabilized frequency (square wave). 4. **Pin 4 (Vcc):** Power supply input. --- ### 3. Part Number Breakdown (MAH72TAX-R) While specific to certain manufacturers (like Mercury Electronic or similar clones), the suffix often denotes environmental compliance: * **MAH Series:** Identifies the 7x5mm high-precision oscillator family. * **72:** Often refers to the specific voltage or internal architecture (e.g., 3.3V). * **T:** Represents "Tape and Reel" packaging for automated assembly. * **-R:** Generally indicates **RoHS Compliance** (Lead-free). --- ### 4. Applications This part is commonly found in: * **Network Equipment:** Routers, switches, and modems. * **Industrial Control:** PLCs and embedded controllers. * **Computing:** Motherboards and peripheral timing. * **Video Systems:** Digital cameras and high-definition interfaces. ---