6N28B-V Tube HF In Dual Russian miniature triode, Lot of 2pcs.

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6N28B-V Tube HF In Dual Russian miniature triode, Lot of 2pcs.:
$7.50

6N28B-V Tube HF In Dual Russian miniature triode

Nuvistor 6N28B-B. This dual triode indirectly heated, designed for VLF. Do nothave a clear microphone effect, thus, has a miniature size. 6N28B-In - a verygood solution for making pre-amplifier, background corrector.Description:

The cathode is indirectly heated oxide.
Works in any position.
Available in glass miniature form.
Durability is not less than 2000 hours.
Weight not more than 5 g Main technical characteristics 6N28B-In:
Nominal electrical data:
• Heater voltage, V ...... 6,3 ± 0,6
• filament current, mA ...... 247 ± 23
• The voltage at the anode in ...... 50
• The current in the anode circuit, ...... 7 mA ± 3
• Slope, mA / V ...... 6,75 ± 2,25
• Current grid reverse, uA ...... no more than 0.1
• Gain ...... 22 ± 6 Maximum permissible electrical values:
• maximum stress on the anode 150 in .......
• The highest voltage at the anode when locked bulb in ....... 300
• The voltage in the grid circuit negative, -150 ......
• The highest current in the cathode circuit, mA ...... 15

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