The **M7S46FCJ-R** is a specific electronic component, typically identified as a **high-precision, surface-mount (SMD) Quartz Crystal Oscillator**. It is commonly manufactured by companies like **NDK (Nihon Dempa Kogyo)** or similar timing device specialists. Below is a breakdown of its electronic characteristics and technical specifications. --- ### 1. General Specifications The part belongs to a class of timing components used to provide a stable clock signal for microprocessors and digital circuits. | Feature | Specification (Typical) | | :--- | :--- | | **Component Type** | SPXO (Simple Packaged Crystal Oscillator) | | **Mounting Type** | SMD (Surface Mount Device) | | **Package Size** | 7.0 x 5.0 mm (7050 size) | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage** | Usually 3.3V or 5.0V (Variant dependent) | | **Frequency Stability** | ±20ppm to ±100ppm | --- ### 2. Key Internal Components The "M7S" series generally consists of two primary internal sections: 1. **The Quartz Crystal Blank:** A high-purity synthetic quartz piece cut at a specific angle (usually AT-cut) to vibrate at a precise frequency. 2. **The IC (Integrated Circuit):** A CMOS-based oscillation circuit and output buffer that converts the mechanical vibration of the crystal into a clean square-wave electrical signal. --- ### 3. Pin Configuration Standard 7050 oscillators like the M7S46FCJ-R typically feature a **4-pin** layout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Standby / OE | Output Enable (High = Active, Low = High Impedance) | | **2** | GND | Ground connection | | **3** | Output | The clock signal output | | **4** | Vcc | Power supply voltage | --- ### 4. Applications Because of its large "7050" footprint, this part is often used in industrial or legacy hardware where reliability and ease of soldering are prioritized: * **Networking Gear:** Switches, routers, and modems. * **Industrial Control:** PLCs (Programmable Logic Controllers). * **Computing:** Motherboards and peripheral interface cards. --- ### 5. Part Number Breakdown (Nomenclature) While exact codes vary by manufacturer, the suffix **-R** usually denotes **RoHS Compliance** (Lead-free) and **Tape & Reel** packaging for automated assembly. ```text M7S --- Series (7.0x5.0mm Package) 46 --- Specific Frequency/Voltage Code FC --- Stability/Temperature Grade J --- Variation Code -R --- RoHS / Tape & Reel ```