<< Product 102D 102D/n Vacuum Tube



Classification-Globe-type bulb of glass, a white ceramic base with four-prong bayonet gold pins , oxide coated filamentary, solid plate, mesh plate triode.
Application-It intended for use a audio frequency voltage amplifer.
Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1 and 2.



Nominal operating conditions and parameters

Filament voltage”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­2.1 V*
Nominal filament current”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­ 1.0 A
Plate voltage”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­160 V
Grid voltage”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­£­3.0 V
Plate resistance--------------------------------------------------------------------8.1 kohms
Plate current”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­0.34 mA
Amplification factor”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­ 29.2

* Direct-current filament supply is used. The grid and platter returns are connected to the negative end of the filament

Characteristics-Average characteristics
Figure 3. shown typical curves of plate currents of grid voltage for several values of plate voltages. It is alternating-current filament supply.

Fig.3

Limiting Operation Conditions for Safe Nor-nor simultaneous ratings

Maximum plate voltage”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­ 190 volts
Maximum plate current”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­”­1.5mA