4X150D

4X150D is also designated 7035.

Description

The 4X150D is a radial-beam power tetrode with a coaxial-electrode structure and a unipotential cathode. It is the 26.5 volt version of the 4X150A, differing from that type only in the construction of its package-type heater, which is integral with the cathode. The 4X150D has an integral radiator and is forced-air cooled.

Ratings and Characteristics

The 4X150D has a heater rating of 26.5 volts at 0.57 amperes, with a heater current range of 0.50 to 0.62 ampere. Heater voltage should be reduced depending on operating conditions and frequency to prevent overheating the cathode. Direct interelectrode capacitance from grid No.1 to plate is a maximum of 0.05 μμf; from grid No.1 to cathode, grid No.2, and heater ranges from 14.5 to 17.0 μμf; and from plate to cathode, grid No.2, and heater ranges from 4.0 to 4.8 μμf. Grid-No.1 voltage ranges from -32 to -46 volts, and grid-No.2 current ranges from -5 to 3 milliamperes.

Applications

The 4X150D is suited for use in airborne or vehicular service having 28 volt electrical systems. It is rated for 370 watts CW output up to 150 Mc and for 140 watts CW output at 500 Mc. Power output is a minimum of 100 watts under specified conditions. The use of the Eimac Air-System Socket, or a socket providing equivalent air-cooling facilities, is required for the 4X150D.

Equivalence is asserted only where the archive's own literature states it directly, in at least 40 separate documents. Tubes that merely substitute in some circuits are not listed here.

Original manufacturer datasheets for 4X150D, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• 7035/4X150D (filed under 7035)
• 4X150D