6384
6384 has no equivalent designation confirmed by the archive. Completed sales put the typical price at $84.00 per tube.
The 6384 is a high-perveance beam power amplifier tube, constructed with a hard glass (nonex) bulb of T-11 size and ceramic spacers rather than mica. It uses a pure tungsten helical heater rated at 6.3 volts, with a design-center current of 1.20 amps (range 1.14 to 1.26 amps). The tube has a glass-filled mica base and a maximum seated height of 2-15/16 inches.
Ratings
The 6384 has a maximum plate voltage of 750 volts DC, a maximum screen voltage of 325 volts DC, and a maximum instantaneous peak plate voltage of 1500 volts. Absolute maximum plate dissipation is 30 watts, and absolute maximum screen dissipation is 3.5 watts. Maximum DC cathode current is 125 mA, with a maximum instantaneous peak cathode current of 250 mA for continuous sine wave service and 1000 mA for pulse service. Maximum heater-cathode voltage is ±450 volts, maximum grid resistance is 0.1 megohm, and DC grid voltage ranges from a maximum of +5.0 volts to a minimum of -200 volts.
Environmental and Mechanical Characteristics
The 6384 has a cathode warm-up time of 45 seconds, a maximum bulb temperature rating of 300°C, a maximum impact shock rating of 500G, a maximum vibrational acceleration rating of 50G, and a maximum altitude rating of 80,000 feet. It has a life expectancy of 10,000 hours. Maximum heater-cathode leakage is 10 μAdc.
Applications
The 6384 is designed for use in equipment with high ambient temperatures and high levels of vibration and shock, and is intended for aircraft, military, and industrial applications. It is suitable for pulse applications and can be used in servo discriminator circuits. The 6384 is designed as a direct retrofit for the 6AR6 or 6098. The Bendix datasheet states that the 6384 will survive thousands of hours longer under adverse conditions than the prototype 6AR6 and 6098 tubes, and that it is one of the Bendix line of tubes. The 6384 is given a 45-hour run-in under overload, vibration, and shock conditions.
| Measure | Per tube |
|---|---|
| Median | $84.00 |
| Typical range (25th–75th) | $66.33 – $94.00 |
| Most sales (10th–90th) | $9.05 – $136.78 |
| Extremes incl. outliers | $9.05 – $136.78 |
| Completed sales | 9 |
| Brand | Median | Range | Sales |
|---|---|---|---|
| Bendix | $94.00 | $26.76 – $94.00 | 7 |
| Condition | Median | Sales |
|---|---|---|
| NOS | $94.00 | 4 |
Per-tube prices from completed sales, 2026-08-01 to 2026-09-17. Matched pairs and quads are divided out. See the price index for how these move over time.
Original manufacturer datasheets for 6384, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| Bendix | 6384 | PDF (519 KB) |
Documents held here and used to write this page.
- RELIABLE HARD GLASS BEAM POWER AMPLIFIER