The **ASX03604-R** is a high-quality, miniature surface-mount (SMD) speaker manufactured by **PUI Audio**. It is specifically designed for space-constrained applications that require clear audio output, such as handheld devices, medical instruments, and IoT hardware. --- ## 1. Key Technical Specifications The following table outlines the core electrical and physical parameters of the ASX03604-R: | Parameter | Specification | | :--- | :--- | | **Impedance** | 4 Ohms (±15%) | | **Rated Power Input** | 0.5 Watts | | **Maximum Power Input** | 0.8 Watts | | **Frequency Range** | 600 Hz ~ 20,000 Hz | | **Sound Pressure Level (SPL)** | 85 dB ± 3dB @ 0.1W/0.1M | | **Resonant Frequency (Fo)** | 600 Hz ± 20% | | **Mounting Type** | Surface Mount (SMT) | | **Weight** | ~1.5 Grams | --- ## 2. Construction and Materials The ASX03604-R is built using materials optimized for durability and high-temperature soldering processes: * **Magnet Material:** Neodymium (NdFeB). This allows for a very strong magnetic field in a small footprint, increasing efficiency. * **Diaphragm/Cone:** Polyetherimide (PEI). This material is chosen for its thermal stability and consistent acoustic performance. * **Housing:** High-temperature plastic, designed to withstand reflow soldering temperatures. * **Terminals:** Gold-plated pads to ensure excellent conductivity and corrosion resistance. --- ## 3. Notable Features ### A. Compact Footprint With dimensions of approximately **11mm x 15mm**, it is one of the smaller high-performance speakers available. Its low profile makes it ideal for slim electronics. ### B. SMT Compatibility Unlike traditional speakers that require hand-soldering or wire leads, the ASX03604-R is designed for **pick-and-place** machines. It can be soldered alongside other SMD components (resistors, ICs) in a standard reflow oven. ### C. Broad Frequency Response While it is a miniature speaker, it maintains a wide frequency range (up to 20kHz), making it suitable not just for simple beeps, but for clear voice prompts and melodic notifications. --- ## 4. Typical Applications * **Medical Devices:** Portable heart rate monitors or glucose meters requiring audible alerts. * **Smart Home / IoT:** Thermostats, security panels, and smart locks. * **Handheld Scanners:** Barcode scanners or mobile POS terminals. * **Consumer Electronics:** Wearables and compact Bluetooth accessories.