The **ABM2-GA6A2-R** is a specific part number for a surface-mount Quartz Crystal manufactured by **Abracon**. This component is a passive resonator used to provide a precise frequency for microcontrollers, RF modules, and timing circuits. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical characteristics. | Parameter | Specification | | :--- | :--- | | **Frequency** | Determined by the specific variant (Standard range 8MHz to 50MHz) | | **Package Size** | 8.0 x 4.5 x 1.4 mm (Ceramic SMD) | | **Operating Mode** | Fundamental | | **Load Capacitance ($C_L$)** | Usually 18pF or 20pF (Specified by the "GA6A2" suffix) | | **Frequency Tolerance** | ±30 ppm (Standard for this series) | | **Operating Temp Range** | -40°C to +85°C (Industrial Grade) | | **Equivalent Series Resistance (ESR)** | 40 to 100 Ohms (Depending on frequency) | --- ### 2. Physical Construction The ABM2 series is built using a **Seam Sealed Ceramic Package**, which offers high reliability and resistance to environmental factors. * **Terminals:** 2-Pad or 4-Pad configuration (The "R" suffix indicates Tape & Reel packaging). * **Material:** Glass-sealed or seam-sealed ceramic lid for hermetic protection of the quartz blank. * **Size Profile:** Relatively large compared to modern ultra-miniature crystals, making it robust for industrial applications and easy to solder. --- ### 3. Pinout and Integration While quartz crystals are non-polarized, the typical layout for an ABM2 series 2-pad crystal is: ```markdown ___________________ | | | Top View | | (Crystal) | |___________________| [Pad 1] [Pad 2] | | (Input) (Output) ``` **Implementation Tip:** To ensure oscillation, you must pair this crystal with two external "load capacitors" ($C_1$ and $C_2$) connected to ground. The formula to calculate these is: `C_L = (C1 * C2) / (C1 + C2) + C_stray` --- ### 4. Common Applications Due to its wide operating temperature and stability, the ABM2-GA6A2-R is found in: 1. **Industrial Controllers:** PLC units and sensors. 2. **Communication:** ZigBee, Bluetooth, and Wi-Fi modules requiring stable clocking. 3. **Computing:** Microprocessor clocking and USB interfaces. 4. **Automotive (Non-Safety):** Infotainment and dashboard displays.