The **M7S55FBJ-R** refers to a specific series of high-performance **Crystal Oscillators** (SPXO - Simple Packaged Crystal Oscillators) manufactured by **Jauch Quartz**. These components are critical for providing stable timing signals in digital circuits. Below is a breakdown of the electronic specifications, physical characteristics, and technical parameters. --- ### 1. Technical Specifications Based on the part numbering system for the Jauch M7S series, here are the primary electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Component Type** | SMD Crystal Oscillator (SPXO) | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{DD}$)** | 5.0V (Standard for M7S series) | | **Frequency Range** | Typically 1.0 MHz to 160.0 MHz | | **Frequency Stability** | ±25 ppm to ±100 ppm (depending on suffix) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Size** | 7.0 x 5.0 x 1.8 mm | --- ### 2. Part Number Breakdown The suffix **"FBJ-R"** provides specific details regarding the performance and compliance of the unit: * **M7S:** Series identifier (5.0V, 7x5mm package). * **F:** Frequency stability code (usually indicates ±100ppm, though this varies by datasheet revision). * **B:** Operating temperature range (typically -40°C to +85°C). * **J:** Symmetry/Duty Cycle (typically 40/60%). * **-R:** Indicates **RoHS Compliant**, meaning the part is lead-free and meets environmental safety standards. --- ### 3. Pin Configuration The M7S55FBJ-R typically utilizes a 4-pad layout: | Pin # | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable (Tristate) or No Connection | | **2** | GND | Ground | | **3** | Output | The generated clock signal | | **4** | $V_{DD}$ | Power Supply (5.0V) | --- ### 4. Key Applications Because of its 5.0V operation and robust 7x5mm footprint, this part is commonly found in: * **Legacy Computing:** Motherboards and peripheral controllers requiring 5V logic. * **Industrial Automation:** PLCs and sensors that operate in electrically noisy environments. * **Networking:** Routers and switches for timing synchronization. * **Embedded Systems:** Microcontrollers requiring an external high-speed clock source. --- ### 5. Schematic Symbol Representation ```cpp +-------------------+ | (OSC) | [1] | Enable --- Output | [3] | | [4] | VDD ------ GND | [2] +-------------------+ ```