Structure and type of PET Self Wrap Braided Sleeve

PET Self wrap braided sleeve, one of the basic components of semiconductors, has the function of current amplification and is the core component of electronic circuits. The Open Type Braided Sleeve is made of two PN junctions that are very close to each other on a semiconductor substrate. The two PN junctions divide the main semiconductor into three parts. The middle part is the base area, and the two sides are the emitter area and the collector area. The arrangement is as follows There are two types of PNP and NPN. Corresponding electrodes are drawn from three regions, namely base b, emitter e and collector c. The PN junction between the emitter region and the base region is called the emitter junction. The PN junction between the collector region and the base region is called The PN junction is called the collector.

The base area is very thin, while the emitter area is thicker and has a high impurity concentration. The PNP type Open Type Braided Sleeve emitter area "emits" holes, and its moving direction is consistent with the direction of the current, so the emitter arrow points inward; the NPN type Open Type Braided Sleeve emitter area "Emitting" free electrons move in the opposite direction to the direction of the current, so the emitter arrow points outward. The emitter arrow points outward. The emitter arrow points also in the conduction direction of the PN junction under forward voltage. Silicone PET Self Wrap Braided Sleeve and germanium Pet Self Wrap Braided Sleeve are available in two types: PNP type and NPN type.
The commonly used packaging forms of Open Type Braided Sleeve include metal packaging and plastic packaging. The arrangement of the pins has a certain pattern. The bottom view position is placed so that the three pins form the vertices of an isosceles triangle, in order from left to right. For ebc, for small and medium-power plastic Open Type Braided Sleeve, follow the figure so that the plane faces you, and the three pins are placed downward, then from left to right, they are ebc. Currently, there are many types of PET Self Wrap Braided Sleeve in China. The arrangement of the pins is different. When using Open Type Braided Sleeve whose pin arrangement is uncertain, you must measure to determine the correct position of each pin, or search the transistor user manual to clarify the characteristics of the Open Type Braided Sleeve and the corresponding technical parameters and information. The current amplification effect of PET Self Wrap Braided Sleeve has a current amplification effect. The essence is that the Open Type Braided Sleeve can control a large change in the collector current with a small change in the base current.