The **M7S23FAJ-R** is a specific part number typically associated with **Quartz Crystal Oscillators**, often manufactured by companies like **NDK (Nihon Dempa Kogyo)** or similar precision timing component suppliers. Below is a breakdown of the electronic characteristics and specifications typical for this series. ### 1. General Specifications These components are Surface Mount Device (SMD) oscillators used to provide a stable clock signal for microprocessors and digital circuits. | Feature | Typical Specification | | :--- | :--- | | **Component Type** | SPXO (Simple Packaged Crystal Oscillator) | | **Package Size** | 7.0 x 5.0 mm (7050 Metric) | | **Output Type** | CMOS / TTL Compatible | | **Mounting Type** | Surface Mount (SMD) | | **RoHS Status** | Compliant (Lead-Free) | --- ### 2. Technical Characteristics The alphanumeric code "M7S" usually defines the series and electrical behavior. * **Frequency Stability:** Usually ranges between ±25ppm to ±100ppm depending on the specific sub-grade, ensuring the timing stays accurate across temperature fluctuations. * **Supply Voltage ($V_{cc}$):** Typically operates at **5.0V** (Common for the 'M7' series), though some variations support 3.3V. * **Operating Temperature:** Generally rated for **-10°C to +70°C** (Standard Commercial) or **-40°C to +85°C** (Industrial). * **Enable/Disable Function:** Pin 1 is usually a "Tri-state" or "Standby" pin, allowing the output to be turned off to save power without powering down the whole system. --- ### 3. Pin Configuration Standard 7050 oscillators follow a universal 4-pin layout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | OE or NC | Output Enable (High = Active) or No Connection | | **2** | GND | Circuit Ground | | **3** | Output | Clock Signal Output | | **4** | $V_{cc}$ | Supply Voltage | --- ### 4. Typical Applications The M7S23FAJ-R is found in various digital electronics where a reliable "heartbeat" is required: * **Networking Gear:** Routers, switches, and modems. * **Industrial Controllers:** PLC units and automation interfaces. * **Computing:** Motherboards and peripheral interface cards. * **Embedded Systems:** Microcontroller clock sources for IoT devices. --- ### 5. Identification Tips If you are replacing this part, ensure the **Frequency (MHz)** printed on the top of the casing matches exactly, as "M7S23FAJ-R" is the series/packaging code, but the specific frequency (e.g., 20.000MHz or 50.000MHz) is usually a separate part of the marking.