A pentode transistor is any transistor having five active terminals.
Pentode transistorDiagram 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[1]
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