SMT-1640-S-2-R – PUI AUDIO

The SMT-1640-S-2-R, manufactured by PUI Audio, is a surface-mount technology (SMT) piezo buzzer designed for audible signaling applications. This device operates at a nominal voltage of 5V DC and features a 16mm x 16mm footprint, facilitating integration onto printed circuit boards (PCBs) with space constraints. The piezo element generates sound via mechanical deformation when driven by an oscillating electrical signal. The “-2” likely refers to a specific resonance frequency or sound pressure level (SPL) characteristic, requiring further datasheet consultation for precise values. The “-R” suffix indicates that the component is supplied on tape and reel for automated pick-and-place assembly, conforming to industry-standard packaging dimensions for SMT components. Engineers should consult the device datasheet for critical parameters such as resonant frequency, SPL at a specified distance, current consumption, operating temperature range, and recommended driving circuitry to ensure proper implementation.