FT-24.8B-40E

RYD FT-24.8B-40E is a mid-size piezoelectric ceramic buzzer disc that pairs strong acoustic output with simple integration for appliances, security equipment and industrial controls. The Ø24.8mm brass plate resonates at 4.0±0.5kHz with maximum resonant impedance of 300Ω and static capacitance of 35.0nF at 100Hz, delivering dependable audible signaling at up to 30Vp-p from -20℃ to +70℃, with insulation resistance of 100MΩ minimum. The larger ceramic area and low impedance make it an easy upgrade path where more presence is needed without changing the drive concept. Customization available: resonant frequency and impedance can be adjusted by dimension tuning, electrode pattern and lead wire connection are configurable, protective coating on the ceramic surface can be applied as required, and waterproof or dustproof options are offered; new items can be developed for volume projects. Target scenarios: home appliances, security systems, industrial equipment and consumer electronics.