Composite tubes can be divided into two categories: one is general type composite tubes, with no internal protective circuit, such as low and medium power composite tubes under 2W, the other is with internal geband.89ix.comgeyouchi.89ix.comguhuaji.89ix.comyapianji.89ix.compeidianz.89ix.com

guanjiaw.89ix.comprotective circuit, such as high power composite tubes. The main characteristic parameters of silicon NPN high power composite tube are listed in the table below.