The **M3EH66ZPX-R** is a specific part number typically associated with **surface-mount (SMD) crystals** or **crystal oscillators**, often manufactured by companies like **MtronPTI** or similar timing component specialists. These components are essential for providing a stable clock signal to microprocessors and digital circuits. --- ### Technical Specifications Below is a breakdown of the typical electronic characteristics for this series: | Parameter | Typical Value / Range | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (SPXO) | | **Package Size** | 5.0 x 7.0 mm (Standard SMD) | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{DD}$)** | 3.3V (Commonly denoted by 'H' or '3') | | **Frequency Stability** | ±20ppm to ±100ppm | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **Lead Finish** | RoHS Compliant (R-suffix) | --- ### Part Number Breakdown (Nomenclature) While specific to the manufacturer's internal coding, here is how the code is generally decoded: 1. **M3E**: Indicates the series and package type (e.g., 5x7mm SMD). 2. **H**: Usually represents the input voltage (e.g., 3.3 Volts). 3. **66**: Often refers to the specific frequency or a stability code. 4. **ZPX**: Internal designators for output symmetry, enable/disable functions, and temperature range. 5. **-R**: Indicates **RoHS compliance** and often signifies shipping in **Tape & Reel** format. --- ### Functional Blocks Inside the M3EH66ZPX-R, the electronic architecture consists of: * **Quartz Blank:** The physical crystal that vibrates at a specific resonant frequency. * **Oscillator IC:** An integrated circuit that amplifies the signal and maintains the oscillation. * **Output Buffer:** Ensures the signal is strong enough to drive the "fan-out" (multiple inputs) of the target PCB. * **Tri-state Function:** Pin 1 is usually an "Enable/Disable" pin, allowing the output to go to a high-impedance state to save power. --- ### Application Circuit To use this part in a design, a standard decoupling capacitor is required: ```c // Typical Connection Diagram [Pin 1: E/D] ----> Control Logic / High [Pin 2: GND] ----> System Ground [Pin 3: OUT] ----> Microcontroller Clock Input [Pin 4: VDD] ----> 3.3V Power (+ 0.1uF Capacitor to Ground) ```