Subminiature Gas Diode
The Raytheon 6542 / CK6542 Vacuum tube is a cold
cathode, gas filled diode of subminiature construction,
designed for service as a voltage regulator.
It has an operating current tange of 5 to 25
milliamperes over which it maintains a substantially
constant operating voltage of approximately 150 volts.
Two cathode leads are provided which may be used to
disconnect the load when the tube is removed from the
socket.
This type is characterized by long life and it is
designed for service where severe conditions and
mechanical shock or vibration are encountered.
The flexible terminal leads may be soldered or
welded directly to the terminals of circuit components
without the use of sockets.
Standard inline subminiature sockets may be used by
cutting the leads to a suitable length.
Electrical Data:
CAUTION - To Electronic Equipment Design Engineers
Special attention should be given to the temperature of the tubes.
Reliability will be seriously impaired if maximum bulb temperature is exceeded.
The life expectancy may be reduced if conditions more severe than those specified for life are imposed on the tube and will be reduced appreciably if absolute ratings are exceeded.
Attention should be given to the specified minimum supply voltage to insure operation in total darkness.
Tube Characteristics may deteriorate markedly if the tubes are stored at elevated ambient temperatures without drawing current.
Minimum Supply Voltage ......................... 225 V.
Maximum Starting Voltage DARK .................. 225 V.
Maximum Starting Voltage LIGHT ................. 185 V.
Minimum Current ................................. 5 mA.
Maximum Current ................................ 25 mA.
Minimum Voltage Drop ........................... 142 V.
Maximum Voltage Drop ........................... 165 V.
Maximum Voltage Regulation ....................... 6 V.