I am at-home electronics hobbyist and tend to salvage majority of the components I use from old/broken items. Recently I took apart a microwave and desoldered most of the the components from it. I have never seen one of these (picture) before. What is this and what does it do? enter image description here

enter image description here


1 Answer 1


As per multiple requests an official answer:

What is this

It is a Piezo buzzer.

and what does it do?

It beeps.

  • 2
    \$\begingroup\$ It isn't really a buzzer, since it can't beep without additional circuitry. Isn't it really a piezo transducer or speaker? \$\endgroup\$
    – HandyHowie
    Commented Oct 29, 2019 at 10:35

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