116.001 SUBMINIATURE TUBES, Science Service Historical Image Collection

1949 - new subminiature tube group includes a 1AD5 sharp cut-off r-f pentode; 1E8 pentagrid converter; 1T6 diode pentode; and 1AC5 output pentode

SUBMINIATURE TUBES FOR PORTABLE BATTERY OPERATED RADIO RECEIVERS

CD 1967070 E&MP116.001

Radio Tubes
(submarine)

May 6, 1949

Four types of subminiature tubes, comprising a portable battery radio receiver complement, have been announced by the Radio Division of Sylvania Electric Products Inc., 500 Fifth Avenue, New York 18, N.Y.

The new subminiature tube group includes a 1AD5 sharp cut-off r-f pentode; 1E8 pentagrid converter; 1T6 diode pentode; and 1AC5 output pentode. Filaments are rated at 1.25 volts and 40 milliamperes d-c. All four tubes are designed for plate voltages ranging from 30 volts and 67.5 volts and plate currents ranging from 0.30 ma to 2.0 ma.

The tubes are supplied with 8-pin subminiature leads suitable for use in subminiature sockets or printed circuits, and have a maximum diameter of 0.400” and a maximum seated height of 1 ½ [inches]. They may be mounted in any position.