Rare 2 pcs 6P3S / 6L6 / 6L6GT COBRA.Output Beam Tetrode.TANTAL.1956-57'.Tested.Vintage Valve order tube.Tested.Flat film getter.Black Anode.

order Rare, early vacuum tube with cobra flask. 1956,1957 production. Flat film getter, black anode. Plant - TANTAL. The lamps have been tested and have working parameters.

Description
6P3C is a beam tetrode for low frequency amplification.

Technical characteristics of 6P3S
The tension voltage is 6.3 ± 0.6 V;
Voltage current – ​​900 ± 60 mA;
Nominal anode voltage (constant) – 250 V;
Anode voltage limit (constant) – 400 V;
Anode current – ​​72 ± 14 mA;
The voltage of the first grid (constant) is 14 V;
The reverse current of the first grid is 3.0 μA;
The voltage of the second grid is nominal (constant) - 250 V;
The voltage of the second grid is marginal (constant) – 300 V;
The current of the second grid is 8 mA;
The maximum power dissipated by the anode is 20.5 W;
The maximum power dissipated by the second grid is 2.75 W;
The voltage between the cathode and the heater is 200 V;
The steepness of the characteristic is 6 ± 0.8 mA/V;
Output power – 5.4 W;
The resistance in the circuit of the first grid is the limit - 0.5 MΩ
Input capacitance – 11 ± 2 pF;
Output capacity – 8.2 ± 1.5 pF;
Through capacitance - 1 pF.