6F5P

The 6F5P (6Ф5П rus.) triode-pentode with separate indirectly heated cathodes. Designed to amplify and generate a low-frequency voltage (triode part) and to work in the output vertical scanning units of television receivers with a beam deflection angle of 110°. The 6F5P triode-pentode is used in television equipment and in other general-purpose radio engineering devices.

Close analogues of the 6F5P triode-pentode tubes used are: ECL85, 6GV8 and ECL805.

Technical specifications:

Triode part:

• Anode voltage nominal (constant): 100V
• Anode voltage limit (constant): 250V
• Anode current: 5.5mA
• Cathode current limit (average value): 15mA
• Cathode current limit (pulse amplitude): 200mA
• Power dissipated by the anode, limit: 0.5W
• The voltage between the cathode and the heater limit (constant): 100V
• Slope: 7mA/V
• Gain around: 70
• Cathode resistance for automatic bias: 160Ohm
• The resistance in the grid circuit is limiting:
  – at automatic bias 3.3MOhm
  – at a fixed bias of 1MOhm
• Input capacitance: 3.5pF
• Output capacitance: 0.25pF
• Passing capacitance not more than: 1.8pF

Pentode part:

• Anode voltage nominal (constant): 185V
• Anode voltage limit (constant): 300V
• Anode voltage limiting (pulse amplitude): 2kV
• Anode current: 41mA
• Cathode current limit: 75mA
• Grid voltage second nominal (constant): 185V
• Grid voltage second limit (constant): 250V
• Grid current second: about 2.7mA
• Power dissipated by the anode, limit: 9W
• Power dissipated by the second grid, limit: 2W
• Slope: 7.5mA/V
• Internal resistance approx: 23kOhm

Operating time not less than 3000 hours.