Based on your query, the **MH63TCG-R** refers to a high-performance **Crystal Unit (Resonator)** manufactured by **EPSON** (or licensed equivalents). This specific part is widely used in automotive and industrial applications where high reliability and precision timing are required. --- ## 1. Component Identification The part number follows a specific nomenclature common in the frequency control industry: | Component | Detail | | :--- | :--- | | **Manufacturer** | EPSON / Toyocom | | **Series** | MH63 (High-reliability surface mount) | | **Type** | MHz Range Crystal Resonator | | **Package Size** | 6.0 x 3.5 mm (Approx.) | | **Application Grade** | Automotive / Industrial | --- ## 2. Technical Specifications While specific frequency depends on the full ordering code (e.g., 8MHz, 16MHz), the general characteristics of the **MH63** series are as follows: ### Electrical Characteristics * **Frequency Range:** Usually between 8 MHz to 50 MHz. * **Frequency Tolerance:** ±30 ppm to ±50 ppm (at 25°C). * **Frequency Stability:** High stability over a wide temperature range. * **Load Capacitance ($C_L$):** Typically 8pF, 10pF, or 12pF. * **Drive Level:** 10µW to 100µW. ### Physical & Environmental * **Operating Temperature:** -40°C to +125°C (standard for "R" or automotive suffix). * **Sealing:** Glass-sealed or seam-welded for high moisture resistance. * **Mounting:** SMD (Surface Mount Device). --- ## 3. Terminal Configuration The MH63 series typically features a 4-pad layout: | Pad Number | Function | | :--- | :--- | | **1** | Crystal Terminal (Input/Output) | | **2** | Ground (Connected to Metal Lid for EMI) | | **3** | Crystal Terminal (Output/Input) | | **4** | Ground (Connected to Metal Lid for EMI) | --- ## 4. Key Features and Applications The **-R** suffix often denotes **RoHS compliance** and **Automotive Grade** (AEC-Q200) qualification. ### Applications: 1. **Automotive ECUs:** Engine control units, body electronics. 2. **Safety Systems:** ABS, Airbag controllers. 3. **Industrial Automation:** PLCs and high-heat environment controllers. 4. **Telecommunications:** Network infrastructure requiring long-term stability. ### Advantages: * **Heat Resistance:** Designed to withstand engine-room temperatures. * **Vibration Resistance:** High mechanical shock durability. * **Precision:** Low aging rate over time. ---