Pentode transistor

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A pentode transistor is any transistor having five active terminals.

Early pentode transistors[edit]

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]

Modern pentode transistors[edit]