Case application of X-ray to detect IGBT semiconductor bubble ratio

IGBT is a new type of semiconductor, which is widely used in various industries, such as aerospace, automotive, high-speed rail, electric power and other sophisticated fields, as well as medical devices, household appliances and other fields. It can be respected by many industries. It is conceivable that the role of IGBT is self-evident. Today, let's talk about IGBT, a new semiconductor.

In the past, in circuit applications, alternating current was converted into direct current through rectifier technology, and with the needs of the development of the times, power converted direct current into alternating current, that is, the reverse phenomenon of rectifier technology, so it is called inverter.

The principle of inversion is to add a DC power supply to the anode and cathode of the thyristor, add it to the control set of the thyristor through another trigger circuit, and determine the on-off of the DC power by adjusting the on time on the thyristor control pole. Later, there was another inversion scheme, that is, add the DC voltage to the collector and emitter of the switch tube, and control the on-off of the switch tube by adjusting the potential on the base electrode, So as to realize the inverter process of converting DC into AC.

Although these two technologies can play a certain role, because these devices have the characteristics of high resistance, they will produce a lot of heat in the circuit. Later, the inverter technology has not been effectively improved for a long time, until the emergence of IGBT.

What is IGBT?

IGBT is actually a three-stage transistor. The front end is MOS tube, and the back end is connected with PNP tube. MOS tube has the characteristics of large input impedance and PNP has small output impedance. It is of great significance to combine the two.

For this cross era product, we often encounter the demand of customers who need X-ray to detect internal bubbles.