The BH is a cold cathode full wave rectifier made by Raytheon. They were a more powerful version of the B type. The original version as shown in the first example, had a brass base like the B and handled 85 ma. Later production had first a long and then a short baklite base as shown in the second and third examples and were rated at 125 ma.
Length = 4.12" Diameter = 1.75"
Max voltage = 350
Max current = 85 ma (EARLY) 125 ma
Fil voltage = cold GOTO INDEX