6LU8

6LU8 has no equivalent designation confirmed by the archive. Completed sales put the typical price at $8.00 per tube.

The 6LU8 is a duodecar vacuum tube used as a combined vertical-deflection oscillator and vertical-deflection amplifier in color television receivers, requiring a duodecar 12-contact socket.

Construction

The tube uses a 12-contact duodecar base. Types 16LU8A and 21LU8 are identical with the 6LU8 except for heater ratings.

Ratings

The 6LU8 has a heater voltage of 6.3 volts and a heater current of 1.5 amperes, with a heater warm-up time of 11 seconds. The 16LU8A has a heater voltage of 16 volts and a heater current of 0.6 amperes; the 21LU8 has a heater voltage of 21 volts and a heater current of 0.45 amperes. The peak heater-cathode voltage rating is ±200 volts maximum, and the average heater-cathode voltage rating is 100 volts maximum. The plate voltage maximum rating is 330 volts, the grid voltage positive-bias maximum rating is 0 volts, and the plate dissipation maximum rating is 3 watts.

Characteristics

At a plate voltage of 250 volts and a grid voltage of 10.5 volts, the tube has an amplification factor of 17 and a plate resistance of approximately 5500 ohms. Direct interelectrode capacitances are 3.6 pF from grid to plate, 0.48 pF from grid to cathode and heater, and 3.4 pF from plate to cathode and heater.

Per-tube prices from completed sales, 2026-06-30 to 2026-08-30. Matched pairs and quads are divided out. See the price index for how these move over time.

Original manufacturer datasheets for 6LU8, hosted by Frank Philipse's Electron Tube Data sheets.

Documents held here and used to write this page.

• 6LU8