The **AS02808MR-2-R** is a high-quality, miniature dynamic speaker manufactured by **PUI Audio**. It is designed for compact electronic devices requiring clear voice reproduction and reliable performance in a small footprint. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Power Rating** | 0.5W (Nominal) / 0.8W (Maximum) | | **Frequency Range** | 500 Hz ~ 4,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 0.1W / 0.1m | | **Resonant Frequency (Fo)** | 500 Hz (±20%) | | **Dimensions** | 28mm Diameter x 5.2mm Depth | | **Magnet Material** | NdFeB (Neodymium) | | **Mounting Type** | Flange Mount / Surface | --- ### ## Key Electronic & Mechanical Features #### 1. Neodymium Magnet Structure The use of **NdFeB (Neodymium)** magnets allows the speaker to maintain high efficiency and sound pressure levels despite its thin 5.2mm profile. This material provides a much stronger magnetic field than traditional ferrite magnets of the same size. #### 2. Mylar Cone Construction The diaphragm is typically made of Mylar (polyester film). This makes the part: * **Moisture Resistant:** Suitable for devices that may be exposed to humidity. * **Durable:** Less prone to tearing or environmental degradation compared to paper cones. #### 3. Optimized for Voice The frequency response range (500 Hz to 4 kHz) is specifically tuned for the human vocal range. This makes it an ideal choice for: * Intercoms and walkie-talkies. * Voice prompts in medical devices. * Alarm and alert systems. --- ### ## Connection & Installation The part features **solder pads** on the rear for wire attachment. When integrating this part into a circuit, ensure: * **Polarity:** Observe the "+" and "-" markings to maintain phase, especially if using multiple speakers. * **Amplification:** An audio amplifier (Class D or Class AB) capable of driving an 8-ohm load at 0.5W is required. ---