Based on the part number provided, **M7S73TCJ-R** corresponds to a specialized **Quartz Crystal Oscillator** manufactured by **NDK (Nihon Dempa Kogyo)**. This specific part belongs to the **M7S series**, which is widely used in automotive, industrial, and high-reliability consumer electronics. --- ### 1. Key Technical Specifications The following table highlights the core electrical and mechanical characteristics of the M7S73TCJ-R: | Parameter | Specification | Details | | :--- | :--- | :--- | | **Component Type** | SPXO | Simple Packaged Crystal Oscillator | | **Frequency Range** | 1 MHz to 80 MHz | Standard range for this series | | **Package Size** | 7.0 x 5.0 mm | Standard 7050 Ceramic SMD package | | **Output Type** | CMOS | Rail-to-rail digital output | | **Supply Voltage** | 3.3V (Typical) | "73" code usually denotes 3.3V compatibility | | **Frequency Stability** | ±50 ppm to ±100 ppm | Standard stability over temperature | | **Operating Temp** | -40°C to +125°C | Automotive Grade (High reliability) | --- ### 2. Internal Components & Construction The device is not a simple piece of quartz but a miniaturized electronic module containing: 1. **AT-Cut Quartz Crystal:** The primary vibrating element that determines the base frequency. 2. **Oscillator IC:** A CMOS-based integrated circuit that provides the gain needed to maintain oscillation and buffers the output signal. 3. **Ceramic Substrate:** A multi-layer ceramic package that provides mechanical protection and hermetic sealing (usually seam-welded). 4. **Gold-Plated Pads:** Four primary pins: * **Pin 1:** Standby/Enable Function (Tri-state). * **Pin 2:** Ground (GND). * **Pin 3:** Output. * **Pin 4:** Supply Voltage (Vcc). --- ### 3. Suffix Breakdown (M7S73TCJ-R) While NDK part numbers are specific, the suffix codes generally indicate: * **M7S:** Series Name (Standard Clock Oscillator). * **73:** Voltage and Interface code (typically 3.3V CMOS). * **TCJ:** Stability and Temperature profile (often indicates -40/+125°C range). * **-R:** RoHS compliant and usually indicates Tape & Reel packaging. --- ### 4. Typical Applications * **Automotive Systems:** ADAS (Advanced Driver Assistance Systems), Infotainment, and Body Control Modules. * **Industrial Automation:** PLCs and sensor nodes requiring high-temperature durability. * **Communications:** Timing for Ethernet and microcontrollers in harsh environments. ---