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Pentode transistor

Pentode transistor
Diagram of pentode transistor as described by Lawrence E. Dickens in their patent, with a cross section view and alternative design with interposed layer of SiO₂. Gates are marked ''G₁'', ''G₂'' and ''G₃''.

A pentode transistor is any transistor having five active terminals.

Early pentode transistors

One early pentode transistor was developed in the early 1950s as an improvement over the point-contact transistor.

  • A point-contact transistor having three emitters. It became obsolete in the middle 1950s. Pentode field-effect transistors having 3 gates, similar to vacuum tube pentodes have also been described

Modern pentode transistors

  • Triple emitter transistor in three input transistor-transistor logic gates.
  • Triple collector transistor in three output integrated injection logic gates.
  • Field effect transistor having three gates.

References

References

  1. [https://archive.today/20120701101306/http://151.207.240.23/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/search-adv.htm&r=1&p=1&f=G&l=50&d=ptxt&S1=4104673.PN.&OS=pn/4104673&RS=PN/4104673 US Patent 4,104,673 August 1,1978]
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