## AS03508CO-5-R Technical Overview The **AS03508CO-5-R** is a high-quality miniature speaker manufactured by **PUI Audio**. It is part of their "Copper" series, designed for applications requiring a slim profile without sacrificing acoustic performance. ### 1. Key Technical Specifications The following table outlines the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Speaker Type** | Dynamic, Permanent Magnet | | **Impedance** | 8 Ohms (±15%) | | **Rated Power** | 0.5 Watts | | **Maximum Power** | 0.8 Watts | | **Frequency Range** | 500 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 84 dB @ 0.5W, 10cm | | **Resonant Frequency (Fo)** | 500 Hz (±20%) | | **Dimensions** | 35mm x 20mm x 5.1mm | --- ### 2. Component Composition and Materials The AS03508CO-5-R is constructed with specific materials to ensure longevity and sound clarity: * **Magnet Material:** Neodymium (NdFeB). This allows for a very strong magnetic field in a small footprint, increasing efficiency. * **Diaphragm:** Typically a cloth or polymer blend, designed for linear movement. * **Frame:** Metal (Steel) housing provides structural rigidity and EMI shielding. * **Termination:** Solder pads for direct wire connection. --- ### 3. Application Use Cases Due to its rectangular shape and low profile (5.1mm depth), this part is commonly used in: 1. **Handheld Devices:** Scanners, GPS units, and portable medical monitors. 2. **IoT Hardware:** Smart home hubs or security panels where space is constrained. 3. **Industrial Equipment:** User interface feedback (beeps/voice prompts) for control panels. --- ### 4. Integration Considerations When designing a PCB or enclosure for this speaker, keep the following in mind: * **Enclosure Tuning:** To achieve the best bass response (closer to the 500Hz resonance), the speaker should be mounted in a sealed or ported "back box" to prevent acoustic short-circuiting. * **Polarity:** Ensure correct wiring to the (+) and (-) pads to maintain phase consistency, especially if using multiple speakers. * **Drive Circuitry:** Use a Class-D or Class-AB audio amplifier capable of driving an 8-ohm load at 0.5W.