Tushen Tattalin Transistor

Takaitaccen Transistor

Transistor ita ce babbar kayan aiki na amfani da shi wajen zama ko kawo alamomin lalace da tattalin arziki.

Fanin Diffused

Fanin ya ce ya samu transistors na planar a wafer mai karamin karamin. An sanya wafer na N-type a tashin gida ta P-type gas impurities, wanda ya haɗa suka fara P-type region (base) a cikin wafer. An yi mask da dubu, kuma an sanya wafer a tashin gida ta N-type impurities. Wannan ya haɗa suka fara N-type region (emitter) a tsakiyar P-type layer.

A lokacin, an yi layon mai karamin silicon dioxide a duk bincike, kuma an yi photo stamp don bayyana aluminium contacts don leads of base and emitter.

Fanin Point Contact

Fanin ya ce ya amfani da wafer na semiconductor N-type, wanda an sanya shi a tashin gida metallic base. An koyi tungsten spring (Cat’s whisker wire) a cikinsu, kuma an fiye duk setup a glass ko ceramic don hakkin. An koyi current mai yawa kadan don haɗa suka fara PN junction a point of contact, wanda ya haɗa suka zama transistors mai ma'ana a fannonin mafi yawan frequency saboda low capacitance.

Fanin Fused ko Alloy

A wannan fanin, an yi biyu dots mai karamin indium ko aluminium (acceptor) a karamin karamin wafer na n-type. Kuma an sanya duk system a tashin gida ta hanyar temperature wanda ya fi kan melting point of wafer material da take da acceptor.

Mai karamin indium masu yawa ta ciya a cikin wafer, kuma p-type material ta fara a biyu sides of the wafer. Transistor na PNP ta fara idan an juye (figure 4).

Fanin Rate-Grown ko Grown

Wannan fanin ya amfani da Czochralski technique don draw single crystal daga melt of Ge ko Si ta p-type impurities. An koyi seed na semiconductor a cikin molten semiconductor a graphite crucible. Rod holding the seed ya ci karfin kudin kuma an fitarwa, first adding P-type impurities, sannan N-type, don grow a PN junction.

Fanin Epitaxial

Sunan wannan fanin ya fara daga Greek words meaning “on” and “arrangement.” A thin n-type Semiconductor ko p-type semiconductor layer ya fara a cikin substrate mai karamin karamin of the same semiconductor. Layer ya fara ita zai iya zama base, emitter, ko collector, kuma junction created ya fi low resistance.