6155U

The 6155U or QY3-125 is a 125 watt tetrode designed to be an all glass replacement for the 4-125A/4D21 and the 6155 which looks identical.

Length = 4.75" Diameter = 2.25"
Max voltage = 3000
Max current = 220 ma
Fil voltage = 5
Fil current = 6.5 amps         GOTO INDEX