Braided network used in computer power lines, audio video cable, wire and cable industries, from the protection. Almost all of the electronic circuits, have to use the semiconductor wire network management, many of the circuits play an important role in the birth of one of the earliest semiconductor devices, its application is also very extensive.

The working principle of wire network management, crystal wire network management by a p-type semiconductor and n-type semiconductor p-n junction formed on both sides of the interface to form a space charge layer, and built a self-built electric field. When there is no applied voltage, the p-n junction on both sides of the carrier concentration difference caused by the diffusion current and self-built electric field caused by the drift current equal to the state of electricity balance. When the outside has a positive voltage bias, the external electric field and self-built electric field suppression of each other so that the carrier diffusion current increases caused by forward current. When the external voltage bias, the external electric field and self-built electric field to further strengthen the formation in a certain reverse voltage range and reverse bias voltage value of the reverse saturation current I0 when the applied reverse voltage to a certain high Level, the electric field intensity in the pn junction space charge layer reaches the critical value to produce the multiplication process of carriers, and a large number of electron-hole pairs occur, and a large reverse breakdown current occurs, which is called the breakdown phenomenon of the wire netting .

In the electronic circuit, the positive pole of the wire netting is connected to the low potential end and the negative pole is connected to the high potential end. At this time, there is almost no electric current flowing in the electric wire netting, and the wire netting is in the cut-off state, this kind of connection way, . Wire network management in reverse bias, there will still be a slight reverse current flows through the wire network management, known as leakage current. When the reverse voltage at both ends of the wire network management increased to a certain value, the reverse current will increase sharply, the wire network will lose the one-way conductive properties, this state is called the breakdown of the wire network.