带阻三极管是三极管的一种派生型,其结构是将三极管芯和限流电阻做在一起,同封在一个外壳内。应用带阻三极管不仅可减少电路上的元件和焊点,给电路设计、制造及检修带来方便,而且由于具有较大的输入阻抗和低噪音性能,还可以提高产品质量。带阻三极管在录像机和高品质彩电中应用较多, Transistor with a triode is a derivative of the transistor, the structure is the transistor core and the current limiting resistor together, sealed together in a shell. Application of triode not only can reduce the circuit components and solder joints, to the circuit design, manufacture and maintenance convenience, and because of greater input impedance and low noise performance, but also can improve product quality. With blocking the transistor in the VCR and high-quality color TV in more applications,