The **ME68XBX-R** is a specific electronic component typically categorized as a **Surface Mount Device (SMD) Quartz Crystal Oscillator** or a specialized **Ceramic Resonator/Filter**, often associated with brands like Murata or specialized timing component manufacturers. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Technical Specifications The "ME" series generally refers to miniature, high-precision timing components. Here are the typical parameters for this part: | Parameter | Description | | :--- | :--- | | **Component Type** | Crystal Oscillator / Resonator | | **Package Type** | SMD (Surface Mount Device) | | **Frequency Range** | Typically MHZ range (Specific to the "68" designation) | | **Frequency Tolerance** | ±20ppm to ±50ppm (standard) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Load Capacitance** | Generally 8pF to 12pF | | **RoHS Status** | Compliant (Lead-Free) | --- ### 2. Physical Construction The part is designed for high-density PCB layouts where space is a premium. * **Housing:** Ceramic base with a metal seam-welded lid to ensure a vacuum-sealed environment for the quartz crystal. * **Terminals:** Gold-plated or Tin-plated pads on the bottom for reflow soldering. * **Size:** Usually follows standard footprints like 3.2 x 2.5 mm or 2.5 x 2.0 mm. --- ### 3. Circuit Application In an electronic circuit, the ME68XBX-R serves as the "heartbeat" for microcontrollers and digital ICs. #### Key Functions: 1. **Clock Generation:** Provides a stable frequency for CPU timing. 2. **Frequency Reference:** Used in RF (Radio Frequency) circuits for stable signal transmission and reception. 3. **Baud Rate Stability:** Ensures accurate timing for UART/USB communication. #### Typical Wiring Diagram Concept: ```circuit [Microcontroller] / \ [XTAL_IN] [XTAL_OUT] | | +----[ME68XBX-R]---+ | | [C1] [C2] | | [GND] [GND] ``` *(Note: Some ME series parts have internal load capacitors, eliminating the need for C1 and C2.)* --- ### 4. Part Number Breakdown (General Convention) While manufacturers vary, the suffix usually denotes specific environmental or packaging ratings: * **ME:** Series designation (Miniature Electronic). * **68:** Frequency code or physical dimension code. * **XBX:** Internal stability and temperature coefficient codes. * **-R:** Indicates "Tape and Reel" packaging for automated pick-and-place assembly. ---