Electret Condenser Microphone Mounting Types
CUI’s microphones are available in various mounting configurations depending on the application requirement, including PCB pin, wire lead, and terminal types.
Design for ECM Mounting
When mounting an electret condenser microphone, the microphone should be mechanically isolated from the product enclosure, so sound and vibrations are not transferred from the enclosure to the microphone and to ensure the microphone only receives sounds from the front holes of the enclosure. The thickness of the enclosure in front of the microphone should be less than 1 mm, while the holes in front of the microphone should have a diameter greater than 1.3 mm for a single hole or greater than 0.8 mm for multiple holes. Elongated holes should have a width greater than 0.8 mm.
For low vibration applications the microphone can be mounted by friction fit or glued into a sleeve, while for high vibration applications the mounting sleeve should be extended, so glue can also be applied to the back of the microphone and the sleeve.