HCM0901B3PD

RYD HCM0901B3PD is a Passive Electromagnetic Buzzer with Φ9mm side-sound radiation, 1.5V rated square-wave drive, and 85dB output at 2731Hz. This Passive Electromagnetic Buzzer requires an external driving signal to produce sound, enabling the host MCU or oscillator to control frequency, pattern, and duration for programmable alert sequences. The 1–3V operating range permits direct drive from single-cell or dual-cell battery sources without boost conversion. NORYL housing provides thermal and chemical resistance for long-term reliability in through-hole assemblies. Rated −30 to +70°C. Suited to battery-powered consumer electronics, portable medical indicators, and compact IoT devices where 1.5V rail compatibility and side-sound emission are concurrent design constraints. Customization available: operating voltage range adjustment and lead wire length options.