6F12P

The 6F12P is a miniature universal broadband triode-pentode designed for operation in frequency-converting cascades and high and low-frequency voltage amplifiers. It is used in various general-purpose radio engineering devices. Works in any position.

Near equivalent to tube ECF80 (another connection).

Technical specifications:

• Heating current: 330 ± 30mA
• Vibronoise voltage: no more than 100mV
• Leakage current between the cathode and the heater: no more than 20µA

Triode part:

• Anode current: 12.5 ± 3.5mA
• Reverse grid current: not more than 0.2μA
• Slope of characteristic: 19 – 4mA/V
• Gain 100
• Input resistance: 1kOhm
• Equivalent resistance of intralamp noise: 130Ohm

Pentode part:

• Anode current: 13 ± 4mA
• Current of the 2nd grid: no more than 2.2mA
• Reverse current of the 1st grid: not more than 0.2μA
• The steepness of the characteristic: 19mA / V
• Input resistance: 1kOhm
• Equivalent resistance of intralamp noise: 250Ohm

Operating time not less than 2000 hours.