### AS03008MR-R: Electronic Specifications and Overview The **AS03008MR-R** is a miniature, high-performance dynamic speaker manufactured by **PUI Audio**. It is designed for applications where space is limited but clear sound reproduction is required. --- ### 1. Key Technical Specifications Below are the primary electronic and physical parameters for this component: | Parameter | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms ± 15% @ 1.0 kHz | | **Rated Power** | 0.5 Watts | | **Max Power** | 0.8 Watts | | **Sound Pressure Level (SPL)** | 86 ± 3 dB @ 0.5W, 0.1m | | **Resonant Frequency (Fo)** | 500 Hz ± 20% | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Magnet Material** | NdFeB (Neodymium) | | **Cone Material** | Mylar (PET) | --- ### 2. Physical Dimensions The device is characterized by its rectangular, low-profile design: * **Length:** 30 mm * **Width:** 8 mm * **Thickness:** 5 mm * **Weight:** ~1.6 grams --- ### 3. Functional Details * **Transduction Method:** It utilizes a voice coil and a Neodymium magnet. When an AC signal is passed through the coil, it interacts with the magnetic field, causing the Mylar cone to vibrate and produce sound. * **Durability:** The Mylar cone provides moisture resistance, making it suitable for handheld devices or outdoor applications compared to paper-cone speakers. * **Connection Type:** Usually features solder pads for direct wire attachment or PCB mounting. --- ### 4. Typical Applications Due to its small form factor and 8-ohm impedance, it is commonly used in: 1. **Handheld Devices:** Radios, scanners, and GPS units. 2. **Medical Instrumentation:** Audible alerts and heart rate monitors. 3. **IoT Devices:** Smart home sensors and alarm panels. 4. **Consumer Electronics:** PDAs and small toys.