Compactron base

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The 12-pin Compactron tube base was developed by GE in the late 1950s for multi-system and high-voltage all-glass tubes. The earliest tubes using this base were commercially introduced in 1960. They were intended to compete with transistorized electronics during the solid state transition, mainly in television applications.

The twelve pins are placed on a 19.05 mm (3/4") diameter circle. The pins are stiff wires protruding through the bottom of the glass envelope and plug directly into the socket. The base is an integral part of the glass envelope. The pinched-off air evacuation nub is at the bottom of the tube.

Compactron tubes used in Tek equipment