Due to the continuous development of the information industry, the demand for related electronic components is also growing, and the patch buzzer is a typical representative. They are generally used in small electronic devices, such as Bluetooth, reversing radar, personal medical devices, etc. Therefore, in order to ensure their use effect, we also need to pay attention to some key points when testing buzzers. The following contents will be introduced in detail.
1、 The first is the appearance inspection.
1. The surface of the buzzer shall be clean, free of damage, dirt, deformation and other mechanical damage, with consistent color, specification, model and polarity identification;
2. The outer packing box of the patch buzzer shall be standard and tidy, with product identification, and shall be free of damage, dirt and other adverse phenomena.
3. The product label shall be clear, and the content shall indicate the material name, specification, model, quantity, production date, product manufacturer, etc.
In addition to the above three points, when testing buzzers, we also need to pay attention to their specifications, models and polarity marks, and try to ensure that the incomplete character marks are not less than three-quarters of the whole character, without such adverse phenomena as unmarked and unclear marks.
2、 The second is the inspection of dimensions.
When testing the size of buzzer, we can use caliper tool. Use a caliper to measure the buzzer body size, pin spacing and pin size. After testing, conduct trial matching with its corresponding PCB board.
In addition to the above two inspection standards, when daily using patch buzzers, it is also necessary to ensure that their production date should be within half a year, otherwise they will be rejected. Only by fully achieving the above points can we ensure that their use is within the operating specifications.