Common packaging types of diodes, DO-15, DO-27, SOD-323, SOD-723, etc., I believe everyone is familiar with it.
Source: Baidu Encyclopedia
Packaging refers to the housing used to mount semiconductor integrated circuit chips . For electronic components, packaging is very necessary.
On the one hand, the package not only plays the role of installing, fixing, sealing, protecting the chip and enhancing the electrothermal performance , but also connects the contacts on the chip to the pins of the package shell with wires, and these pins are passed through the printed circuit board. The wires on the chip are connected to other devices, so as to realize the connection between the internal chip and the external circuit. Because the chip must be isolated from the outside world to prevent impurities in the air from corroding the chip circuit and causing electrical performance degradation.
On the other hand, chips packaged according to uniform specifications are also easier to install and transport.
Careful electronic engineers will find that electronic components have different packaging types. Although the shapes of different types of components are similar, their internal structures and uses are quite different. Or even dual diodes. Components in TO-3 packages include triodes, integrated circuits, etc.
Today we will take stock of common diodes, triodes, and MOS packaging types. The figure below contains the exact dimensions.
