6J9P / 6Ж9П
High-frequency miniature pentode with high slope and short anode-grid characteristic.
Designed for operation in broadband high-frequency voltage amplification circuits. High-frequency pentode 6J9P is used in input stages of general-purpose electronic devices. Works in any position.
Indirectly heated oxide cathode.
Overall dimensions of 6J9P:
- height - 48 mm;
- diameter - 22.5 mm.
Minimum operating time is not less than 2000 h.
Analogs: E180F, E186F, EF861, 6688, 7737
Technical characteristics and electrical parameters:
Filament voltage 6.3 ± 0.6 V
Filament current 300 ± 95 mA
Nominal anode voltage (constant) 150 V
Limiting anode voltage (constant) 250 V
Anode current 15 ± 4 mA
Limiting cathode current 35 mA
Limiting grid voltage of the first (constant) -100 V
Nominal grid voltage of the second (constant) 150 V
Limiting grid voltage of the second (constant) 160 V
Second grid current no more than 4.5 mA
Third grid voltage (constant) 0 V
Maximum anode dissipated power 3 W
Maximum second grid dissipated power 0.75 W
Maximum cathode-heater voltage (constant):
- at negative heater potential 150 V
- at positive heater potential 100 V
Steepness of characteristic 17.5 ± 3.5 mA/V
First grid electron current cutoff voltage no more than -1.1 V
Internal resistance 0.15 MOhm
Equivalent resistance of tube noise 350 Ohm
Input resistance at 60 MHz 5 kOhm
Resistance in cathode circuit for automatic bias 80 Ohm
Limiting resistance in first grid circuit 1 MOhm
Input capacitance 8.5 ± 1 pF
Output capacitance 3.0 ± 0.5 pF
Transmission capacitance no more than 0.03 pF
Cathode-heater capacitance no more than 7 pF
Miniature glass design