Based on the part number **M3A68FCG-R**, this component is a high-performance **Crystal Oscillator** manufactured by **NDK (Nihon Dempa Kogyo Co., Ltd.)**. It belongs to the M3A series, which is designed for high-frequency stability and low phase noise. --- ### 1. General Specifications Below are the primary electronic characteristics typical for the M3A series: | Parameter | Specification | | :--- | :--- | | **Component Type** | Crystal Oscillator (SPXO) | | **Output Type** | CMOS / TTL Compatible | | **Operating Voltage** | Typically 3.3V (varies by sub-model) | | **Package Size** | 7.0 x 5.0 mm (6-pad SMD) | | **Frequency Range** | High frequency (Specific value depends on the marking) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Breakdown of the Part Number While NDK uses specific internal codes, the suffix breakdown usually follows this logic: * **M3A**: Series identifier (Surface Mount Device / Oscillator). * **68**: Often refers to the frequency tolerance or specific internal design revisions. * **FCG**: This string typically denotes the output characteristics (CMOS), the supply voltage, and the operating temperature range. * **R**: Generally stands for **Tape & Reel** packaging. --- ### 3. Key Electronic Features 1. **Low Jitter:** Designed for high-speed data communication where timing precision is critical. 2. **Tri-state Function:** Includes a Standby/Enable-Disable function on Pin 1, allowing the output to go high-impedance to save power. 3. **Stability:** High resistance to environmental factors like vibration and thermal shock. 4. **Applications:** * Network equipment (Routers, Switches). * High-end Server Motherboards. * Industrial automation control systems. --- ### 4. Pin Configuration (Typical 6-Pad) | Pin # | Function | | :--- | :--- | | 1 | Standby (Enable/Disable) | | 2 | No Connection (NC) | | 3 | Ground (GND) | | 4 | Output | | 5 | No Connection (NC) | | 6 | Supply Voltage (Vcc) | ---