[[File:UJT caratteristica.png|thumb|Graph of PUT characteristic curve, similar to UJT]]
'''Programmable unijunction transistor''' ('''PUT)''') is a three-lead [[Electronics|electronic]] [[semiconductor]] device with which is similar in characteristic to [[unijunction transistor]] except that it is [[program (computer)|programmable]]{{explain|date=March 2019}}.<ref>{{cite web|url=https://www.daenotes.com/electronics/industrial-electronics/put-programmable-unijunction-transistor|title=PUT - Programmable Unijunction Transistor - Working, Construction, Biasing - D&E notes|website=www.daenotes.com}}</ref>
