Microphone

The utility model relates to a microphone, which comprises an outer shell, a printed circuit board, vibrating membrane, a back pole plate and an impedance conversion part, wherein the outer shell comprises accommodating space for accommodating the components; the vibrating membrane, the back pole plate and the printed circuit board are fixed in the accommodating space orderly; the impedance conversion part is connected to the position between the printed circuit board and the back pole plate; the outer shell forms a square shape; one surface of the printed circuit board comprises a plurality of lug bosses extending out of the accommodating space, and the lug bosses form electric connections and can realize surface gluing. The microphone of the utility model uses the lug bosses capable of realizing surface gluing technology as output terminals, so that the utility model is more suitable to be used as a miniaturization assembly of portable electronic devices such as cellphones, MP3, etc. The utility model is more suitable for large-scale production. Meanwhile, the production efficiency can be increased.