Triode
Blue Glass Globe / Balloon with Pin Point Tip
The Arcturas 127 Balloon / Globe Vacuum tube is a three-electrode general purpose tube
containing a 2.5 volt heater-cathode of the equi-potential type which permits operation from
alternating current. These tubes are used in radio and television reception. They require a miniature
5 pin contact socket.
Electrical Data:
Heater Voltage ................................ 2.5 V
Heater Current ................................ 1.75 A
Preferred Substitutes ..... 27, 227, 227E, 57T227, A245, AX227, C227, C245, C327, C-427, CX345,
D227, DE-1, ER227, EY227, GSY227, GY227, LS227, NU-27, P227_USA, SLY227, T27, UY227,
UY-227_Japan, Y227, Y227AC.
Substitutes ... 56