The General Electric ~ G.E. 5Y3GT Vacuum Tube is a
glass octal type used in the power supplies of radio
equipment having moderate DC requirements. They require
an octal socket. Vertical tube mounting is preferred, but
horizontal opration is permissible if pins 2 and 8 are
in horizontal plane.
Electrical Data:
Heater Voltage ................................ 5.0 V
Heater Current ................................ 2.0 A
Preferred Substitutes .............. 5Y3G, 5Y3S,
5AX4 5AZ4 5R4
Substitutes .................................. 5U4