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TO-93 (TO-209AB) Component Package

Authors:
Geoffrey Hunter
Geoffrey Hunter
Published On:
Apr 7, 2015
Last Updated:
Apr 20, 2024

TO-93 (Transistor Outline 93) is a large panel mount component package used for high-power SCRs and thyristors1. It has good heat-sinking capabilities. Thread is 28.5mm in diameter, so fits 29-30mm hole. The metal case/thread is usually used as the anode, and the thick cable the cathode (there normally is a flying lead for the cathode also), along with a white flying lead for the gate.

A photo of the TO-93 component package.

Synonyms

  • TO-209AB1
  • TO-931

Dimensions

Height is 49.5mm (exc. cable), 231mm (approx, cable fully extended).

Two high-power SCRs in TO-93 packages that are mounted to heatsinks (the International Rectifier 151RB60 and an unknown SCR).

Footnotes

  1. Vishay. Outline Dimensions - TO-209AB (TO-93). Retrieved 2024-04-20, from https://www.vishay.com/docs/95079/t209abcf.pdf. ↩ ↩2 ↩3