6463

6463 has no equivalent designation confirmed by the archive.

The 6463 is a special quality, shock and vibration resistant, long life double triode with separate cathodes for use in computer circuits. It has indirect heating by AC or DC with parallel supply.

Construction

The 6463 uses a NOVAL base. The heater is rated at 6.3 V or 12.6 V, drawing 600 mA at 6.3 V or 300 mA at 12.6 V. Heater pins are 9-(4+5) for 6.3 V operation and 4-5 for 12.6 V operation. The tube has a life expectancy of 10,000 hours under specified lifetest conditions (Vf = 6.3 V, Vba = 150 V, Rk = 90 Ω, Vkf (k neg.) = 120 V). It has a shock resistance of about 500 g and a vibration resistance of 2.5 g.

Ratings

The datasheet gives a maximum cathode-to-heater voltage of 200 V with cathode positive and 100 V with cathode negative. Maximum heater voltage is 6.3 V ± 5% or 12.6 V ± 5%. The anode voltage limit is max. 330 V. Maximum anode dissipation is 4.4 W per triode, with a maximum total anode dissipation of 7.7 W for both triodes. Maximum negative grid voltage is 85 V. Maximum grid current is 5.5 mA. Maximum cathode current is 110 mA, rising to 350 mA during a specified pulse. Maximum grid resistor values are 0.5 MΩ under certain conditions and 1 MΩ under other conditions.

Characteristics

For each triode, the amplification factor is 20 and the transconductance is 5.2 mA/V. At Va = 120 V and Vg = -2 V, anode current is 14.5 mA per triode. Grid-to-anode capacitance is less than 1.2 pF. Grid-to-cathode capacitance is 3.4 pF, with limits of 2.9 to 3.9 pF. Anode-to-cathode capacitance is 0.53 pF, with limits of 0.35 to 0.71 pF. Cathode-to-heater capacitance is less than 0.025 pF.

Operating Notes

The datasheet states that the 6463 retains emission capability after long periods in cut-off condition but is not suitable for circuits critical with respect to hum, microphony, or noise.

Original manufacturer datasheets for 6463, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• HILIDS