M8080

M8080 has no equivalent designation confirmed by the archive.

Description

The M8080 is a special quality power triode intended for use as an r.f. power amplifier or oscillator in equipment where mechanical vibration and shocks are unavoidable and where statistically controlled major electrical characteristics are required.

Construction

The bulb and base dimensions of the M8080 are in accordance with BS448 Section B7G.

Ratings

The M8080 has a heater voltage of 6.3 V and a heater current of 150 mA. The maximum anode voltage is 330 V, the maximum anode dissipation is 3.8 W, and the maximum cathode current is 21 mA. The maximum heater-to-cathode voltage is 150 V. The maximum frequency is 150 Mc/s. The maximum bulb temperature is 170 °C.

Mechanical Limits

The M8080 can withstand a maximum acceleration of 2.5 g in continuous operation and a maximum shock of 500 g for short duration.

Electrical Characteristics

The M8080 has an amplification factor of 17 and an anode impedance of 7.7 kΩ. The transconductance is 2.2 mA/V at Va = 250 V and Vg = -8.5 V. The input capacitance is 1.5 pF, the output capacitance is 1.2 pF, and the anode-to-cathode capacitance is 1.4 pF.

Original manufacturer datasheets for M8080, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• TEST CONDITIONS (unless otherwise specified)

1 further designation appears alongside M8080 in the literature but below the evidence threshold used here, so it is not listed as equivalent.