120

The 120 or 3C21/ 38220 is a 75 watt dissipation zero bias triode with a mu of 90 and a maximum frequency for full power of 30 MHz. This tube was made by United. Similar to the ZB-120.

Length = 6.80" Diameter = 2.00"
Max voltage = 1250
Max current = 160 ma
Fil voltage = 10
Fil current = 2 amps         GOTO INDEX