6S18S

The 6S18S (6C18C rus.) triode is designed to work as a control tube in electronic voltage stabilizers.
It is used in sources of secondary power supply for stationary and mobile radio-electronic equipment for general purposes. Works in any position, preferably vertical.

The 6S18S triode is the predecessor of the 6S33S tube and its later version, the 6S33S-V.

Technical specifications:

• Heater voltage: 12,6 ± 1,3 V
• filament current: 3,2 ± 0,4 A
• The voltage at the anode: 120 V
• The current in the anode circuit: 540 ± 90 mA
• Slope: 39 ± 11 mA/V
• The resistance in the cathode circuit for self-bias: 35 Ohm
• Internal resistance: 130 Ohm
• Grid reverse current: to 5 µA

Maximum permissible electrical values:

• The greatest stress on the anode: 450 V
• The tension in the grid tsepm negative: -150 V
• The greatest current in the cathode circuit: 1.5 mA
• Maximum power dissipated at the anode: 25 W
• The highest voltage in the cathode-heater: 300 V
• The greatest resistance in the grid circuit: 0.5 MOhm

Durability is not less than 2000 hours.