The **ABM2-RAAA1-R** is a specific surface-mount (SMD) quartz crystal component manufactured by **Abracon**. This part is primarily used as a frequency reference in electronic timing circuits. --- ### 1. Technical Specifications Below are the primary technical parameters for the ABM2 series (standard configuration): | Parameter | Specification | | :--- | :--- | | **Component Type** | Quartz Crystal (Passive) | | **Frequency Range** | 8.0 MHz to 50.0 MHz | | **Package Size** | 6.0 x 3.5 x 1.2 mm (4-pad SMD) | | **Operating Temp** | -10°C to +60°C (Standard) | | **Load Capacitance** | 18pF (Standard) | | **Frequency Tolerance** | ±30 ppm | | **Frequency Stability** | ±50 ppm | | **ESR (Max)** | 40 - 80 Ohms (Frequency dependent) | --- ### 2. Physical Construction The part is housed in a low-profile, ceramic package with a glass seal or seam weld, designed for high-density surface-mount applications. * **Footprint:** The 6.0 x 3.5 mm size is a legacy standard, often used where PCB space is available but reliability and cost-effectiveness are prioritized. * **Terminations:** It features 4 gold-plated pads. Usually, diagonal pads (1 and 3) connect to the crystal, while pads 2 and 4 are connected to the metal lid/case for grounding to reduce EMI. --- ### 3. Key Features * **High Stability:** Provides a precise heartbeat for microcontrollers (MCUs) and digital signal processors (DSPs). * **RoHS Compliant:** Lead-free and environmentally friendly according to international standards. * **Reflow Profile:** Compatible with standard high-temperature solder reflow processes. * **Aging:** Features low aging characteristics (typically ±5 ppm per year). --- ### 4. Typical Applications The ABM2 series is commonly found in: 1. **Microprocessor Clocks:** Providing the base clock for CPUs. 2. **Communication Equipment:** Modems, routers, and wireless modules. 3. **Consumer Electronics:** TV sets, gaming consoles, and appliances. 4. **Industrial Control:** PLCs and automation sensors. ---