The Y-621B is a 200 watt conduction cooled triode with a mu of 240 and a maximum frequency of 500 MHz. The Y-621B is an 8873 with an 8-pin base that has been fitted with a BeO link brazed to the anode and a 24 volt heater.
Length = 2.37" Diameter = 2.00" across the heat link
Max voltage = 2200
Max current = 350 ma
Fil voltage = 24
Fil current = GOTO INDEX