复合管分为两类：一类是普通型复合管，内部无保护电路，像2W以下的中、小功率复合管多属此类；另一类内部带保护电路，大功率复合管便属此类。下表列出了硅NPN型大功率复合管的主要特性参数。
Composite tubes can be divided into two categories: one is general type composite tubes, with no internal niaosu.07858.netshusongjiw.89ix.com
wangdian.89ix.comgelishan.89ix.comchengbao.89ix.compentuji.89ix.comprotective circuit, such as low and medium power composite tubes under 2W, the other is with internal protective circuit, such as high power composite tubes. The main characteristic parameters of silicon NPN high power composite tube are listed in the table below.