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Data courtesy of Steve Bench
6H30PI
Socket 9AJ, pin 9 has shield between the sections (same pinout as
6DJ8 and 6CG7)
Heater... 6.3V, 0.9A (.825 nominal spec
Plate... Starts to show color with more than 7 watts plate
dissipation,
interestingly, only the "left" side plate of each half
shows color, the right
side doesn't (as opposed to the inner side or outer side).
| Va (volts) | Ia(ma) | Vg1(volts) | Gm (ma/V, see note) | Mu | Ra (Rp)(ohms) |
| 50 | 5 | -2.8 | 7.1 | 15.2 | 2100 |
| 50 | 10 | -2.3 | 9.8 | 15.9 | 1600 |
| 50 | 20 | -1.5 | 12.3 | 16.3 | 1300 |
| 90 | 10 | -4.7 | 8.4 | 15.3 | 1800 |
| 90 | 20 | -3.9 | 11.7 | 16.0 | 1400 |
| 90 | 30 | -3.1 | 13.3 | 16.2 | 1200 |
| 120 | 10 | -6.5 | 7.6 | 14.9 | 2000 |
| 120 | 20 | -5.6 | 10.9 | 15.7 | 1400 |
| 120 | 30 | -4.8 | 12.9 | 16.1 | 1300 |
| 120 | 40 | -3.9 | 13.3 | 16.3 | 1200 |
| 180 | 10 | -10 | 6.5 | 14.5 | 2200 |
| 180 | 20 | -8.9 | 10.0 | 15.3 | 1500 |
| 180 | 40 | -7.1 | 13.3 | 16.0 | 1200 |
| 250 | 10 | -14.4 | 5.8 | 14.4 | 2500 |
| 250 | 20 | -13.2 | 8.7 | 15.0 | 1700 |
| 250 | 30 | -12.1 | 11.0 | 15.4 | 1400 |
| 250 | 40 | -10.5 | 12.5 | 15.8 | 1300 |
There is some variability from section to section, but this
is normal.
Note: 1 ma/v = 1000 umho = 1 mS