## M3EH12ZPX-R Electronic Component Overview The **M3EH12ZPX-R** is a specific part number belonging to a series of **Crystal Oscillators**, typically manufactured by companies like MtronPTI. These components are essential in electronic circuits for generating stable clock signals. --- ### 1. Technical Specifications Below are the typical technical characteristics associated with this part number: | Feature | Specification | | :--- | :--- | | **Component Type** | XO (Standard Crystal Oscillator) | | **Output Type** | HCMOS / TTL | | **Voltage Supply** | 3.3V (Typical for 'H' series) | | **Package Style** | 5x7mm Surface Mount (SMD) | | **Pin Count** | 4-Pad or 6-Pad | | **Stability** | ±50ppm to ±100ppm (varies by sub-code) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Part Number Breakdown (Nomenclature) Most manufacturers use a coding system to define the part's capabilities: * **M3E**: Refers to the series type (Standard XO, 3.3V). * **H**: Often denotes the output logic (HCMOS). * **12**: Represents the frequency stability or specific physical package variant. * **Z**: Usually indicates the operating temperature range (e.g., Extended Industrial). * **PX**: Often refers to the specific frequency or symmetry/enable-disable functions. * **-R**: Indicates compliance with **RoHS** (Lead-Free) standards. --- ### 3. Key Electronic Functions The M3EH12ZPX-R serves several critical roles in a PCB design: 1. **Clock Generation:** It provides a steady "heartbeat" for microcontrollers, FPGAs, and digital signal processors (DSPs). 2. **Frequency Reference:** Because it is an active oscillator (includes the crystal plus the oscillation circuit), it is more reliable than a passive crystal alone. 3. **Timing Accuracy:** Ensures that data transmission in serial protocols (like UART, SPI, or Ethernet) occurs at the correct intervals to prevent data corruption. --- ### 4. Typical Application Circuit When integrating this part, it usually requires a decoupling capacitor close to the $V_{cc}$ pin. ```c // Schematic Pinout Logic Pin 1: E/D (Enable/Disable) or No Connect Pin 2: GND (Ground) Pin 3: Output (The Clock Signal) Pin 4: Vcc (+3.3V Power) ```