The Y-602, or 8944, is a 100 watt planar triode with a mu of 80 equipped with a pin cooler. The Y-602-B appears to be the same tube with a standard cooler.
Length = 2.75" Diameter = 1.27"
Max voltage = 4500
Max current = 5 amps pulse
Fil voltage = 6
Fil current = 1 amp GOTO INDEX