Circuit diagram of wiring method of AC ammeter SMA means surface mount assembly. It is a new generation of electronic assembly technology, which compresses traditional electronic components into a device with a volume of only a few tenths. Surface Mount SMA,Surface Mount Standard Rectifiers,Smd Bridge Rectifier Changzhou Changyuan Electronic Co., Ltd. , https://www.cydiode.com
Surface mounting is not a new concept, it is derived from earlier processes, such as flat mounting and mixed mounting.
For the assembly of electronic circuits, a point-to-point wiring method was initially adopted, and there was no substrate at all. The packaging of the first semiconductor device uses radial pins, which are inserted into the through holes of the monolithic circuit boards that have been used for the packaging of resistors and capacitors. Active components have been widely used in the past ten years.