06/08/2026
Specifying an audio indicator for your device's UI/UX? Voltage, footprint, and frequency requirements dictate whether you should be looking at a Piezo or a Magnetic buzzer.
The Engineering Breakdown π§
πΉ Piezo Buzzers β Driven by a piezoelectric crystal. They offer incredibly high Sound Pressure Levels (SPL) with minimal power draw.
πΉ Magnetic Buzzers β Driven by an electromagnet and diaphragm. Perfect for operating at very low voltages (down to 1.5V).
πΉ Frequency Profiles β Piezo buzzers output sharp, high-pitch frequencies. Magnetic buzzers offer a broader, lower-pitch sound.
πΉ PCB Footprint β Magnetic transducers are typically much smaller, making them ideal for tight surface-mount applications.
The Takeaway π‘
Use Piezo buzzers for loud, piercing safety alarms where preserving battery life is critical. Use Magnetic buzzers for gentler feedback tones in low-voltage consumer electronics.
π Read the Full Design Note
https://islproducts.com/design-note/piezo-buzzers-vs-magnetic-buzzers/
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