The **MHO+68FAAG-R** is a specific technical part number, typically associated with an **SMD (Surface Mount Device) Resonator or Crystal Oscillator**, often used in automotive or high-precision industrial applications. Below is the detailed breakdown of its electronic characteristics and specifications. --- ## 1. Technical Specifications This component is designed for frequency stability and timing in embedded systems. | Feature | Specification | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator / Resonator | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Frequency Range** | Typically 8MHz to 50MHz (specific to sub-variant) | | **Operating Temperature** | -40°C to +125°C (Automotive Grade) | | **Package Size** | Miniature (e.g., 3.2 x 2.5 mm or 2.0 x 1.6 mm) | | **Tolerance** | ±10ppm to ±50ppm | --- ## 2. Key Components & Construction The internal structure of the MHO series involves several critical layers: ### A. Quartz Crystal Blank The heart of the part is a thin slice of quartz. When an electric field is applied, it vibrates at a very precise frequency (the **Piezoelectric Effect**). ### B. Ceramic Base The "MHO" designation usually refers to a metal-lid, ceramic-base package. This provides: * **Hermetic Sealing:** Protects the internal crystal from moisture and oxidation. * **Thermal Stability:** Ensures the frequency doesn't drift significantly as the circuit heats up. ### C. Electrodes (G-R Designation) * **G:** Often denotes Gold (Au) plating on the pads for superior conductivity and corrosion resistance. * **R:** Usually indicates "RoHS Compliant" or "Tape & Reel" packaging for automated assembly lines. --- ## 3. Circuit Application In an electronic circuit, this part is typically connected to a Microcontroller (MCU). ```c // Typical Pin Configuration (4-Pin SMD) Pin 1: Crystal Input / Enable Pin 2: Ground (Case) Pin 3: Crystal Output Pin 4: Supply Voltage (Vcc) / Ground ``` ### Usage Scenario: 1. **Clock Generation:** Provides the heartbeat for CPUs/MCUs. 2. **Communication:** Ensures stable baud rates for CAN bus, UART, or SPI communication. 3. **Automotive Systems:** Used in ECUs (Engine Control Units) or ADAS sensors where high reliability is required. --- ## 4. Part Number Breakdown (Generalized) While manufacturers vary slightly, the "MHO+68FAAG-R" code can be decoded as follows: * **MHO:** Series Identifier (High-reliability series). * **68:** Frequency code (often representing a specific MHz value). * **F:** Frequency stability code (e.g., ±30ppm). * **AA:** Temperature range code (e.g., -40 to +85°C). * **G:** Gold plating/Lead-free. * **R:** Tape & Reel packaging. ---