Buzzer is a kind of integrated structure of the electronic signal, widely used in automotive, communication, medical, security, smart home and other electronic products as a device, often emitting “beep”, “beep” and other alarm sounds.
SMD buzzer welding skills
1. Before reflow oven welding, scrape the welding place clean to reveal the metal luster, coated with flux and then coated with solder
2. choose rosin oil or non-acidic flux for welding, do not use acidic flux, otherwise it will corrode the metal of the welding place.
3. welding, electro-iron power is not too large, 30W is Z best, there should be enough heat and then welding to ensure the quality of welding, to prevent future desoldering or false welding, welding should not stay too long or the ceramic powder will be burned.
4. electro-iron welding, electronic parts can not immediately move, because wait a while, to avoid solder has not solidified so that the buzzer desoldering.
5. piezoelectric ceramic buzzer piece welding using more than 60 degrees of solder wire, choose better solder, tin content, good fluidity when welding, welding mastery time, time to be short.
SMD buzzer common problems precautions
1. The welding temperature should not be too high, the temperature is too high will easily lead to the buzzer shell deformation, pin loosening, causing no sound or small sound.
2. The sound of the buzzer appears to be of different sizes, and after a while it is normal again, it is affected by the moisture environment, so pay attention to moisture prevention.
3. The buzzer appears out of tune or no sound, is the buzzer by the electromagnetic field interference caused.
Post time: Mar-17-2023