### AS01808MR-R Technical Overview The **AS01808MR-R** is a high-quality, miniature speaker manufactured by **PUI Audio, Inc.** It is designed for applications where space is limited but clear sound reproduction is required. --- ### Key Specifications | Parameter | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms ± 15% | | **Rated Power** | 0.5 Watts | | **Max Power** | 0.8 Watts | | **Sound Pressure Level (SPL)** | 82 dB ± 3dB @ 0.1W/0.1M | | **Resonant Frequency (Fs)** | 500 Hz ± 20% | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Mounting Type** | Surface Mount / Flush Mount | --- ### Material Composition and Physical Characteristics 1. **Frame Material:** Typically constructed from high-durability plastic (ABS or similar) to keep the part lightweight. 2. **Magnet:** Utilizes a **NdFeB (Neodymium)** magnet. Neodymium is used because it provides a strong magnetic field in a very small footprint, allowing for higher efficiency. 3. **Diaphragm:** Usually made of **Mylar (PET)**. This material is moisture-resistant and provides consistent performance across various temperatures. 4. **Terminals:** Features solder pads for secure electrical connection to a PCB or wire harness. --- ### Dimensions and Form Factor The "1808" in the part number often hints at its dimensions: * **Width:** 18 mm * **Height:** 8 mm (approximately) * **Depth:** Very slim profile, making it ideal for handheld devices, IoT sensors, and scanners. --- ### Common Applications * **Handheld Devices:** POS terminals, scanners, and mobile medical equipment. * **IoT Modules:** Smart home hubs or security sensors providing audible alerts. * **Consumer Electronics:** Small toys, clocks, or GPS units. * **Industrial Equipment:** Panel indicators and diagnostic tools. ---