The 357A is a 350 watt triode with a mu of 30 and a maximum frequency of 100 MHz for full output. Replaced by the 357B which had higher ratings due to its zirconium anode.
Length = 8.00" Diameter = 5.10"
Max voltage = 2700
Max current = .5 amp
Fil voltage = 10
Fil current = 10 amps GOTO INDEX