### AS02808MR-R: Component Overview The **AS02808MR-R** is a high-quality, miniature speaker manufactured by **PUI Audio**. It is specifically designed for applications where space is limited but clear audio output is required. --- ### 1. Technical Specifications The following table highlights the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Manufacturer** | PUI Audio, Inc. | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Power Rating (Rated)** | 0.5 Watts | | **Power Rating (Max)** | 0.8 Watts | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 0.5W/0.1M | | **Dimensions** | 28mm Diameter x 5.2mm Height | | **Diaphragm Material** | Mylar (Moisture Resistant) | --- ### 2. Key Features and Materials The AS02808MR-R is engineered with specific materials to ensure longevity and performance: * **Mylar Diaphragm:** The use of Mylar makes the speaker resistant to moisture and environmental humidity, making it suitable for outdoor or industrial handheld devices. * **Low Profile:** With a height of only 5.2mm, it fits easily into slim electronic enclosures. * **Neodymium Magnet:** Utilizes high-strength magnets to provide a higher output-to-weight ratio compared to traditional ferrite magnets. * **RoHS Compliant:** The part meets environmental safety standards for lead-free electronics. --- ### 3. Pinout and Connection Since this is a standard dynamic speaker, it features two solder pads located on the rear of the frame: 1. **Positive (+):** Usually marked with a red dot or a "+" sign. Connect this to the audio signal output of your amplifier. 2. **Negative (-):** The return path to the ground of the audio circuit. --- ### 4. Typical Applications The AS02808MR-R is commonly found in the following types of devices: * **Handheld Scanners:** For audible "beep" confirmations. * **Medical Monitors:** For alarm tones and pulse monitoring audio. * **IoT Devices:** Providing voice prompts or alerts in smart home hardware. * **Portable Instrumentation:** Used in multimeters or gas detectors. ---