Tube-number record
3AU6
0 archive entries
3AU6 is a tube type in the TubeDatabase archive (class: PENTODE). Recorded specifications: brand TUNG-SOL, year 1962, construction Pentode, socket Miniature 7-pin (B7G), maximum plate voltage 340 V, and maximum plate dissipation 3.5 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassPENTODE
BaseMiniature 7-pin (B7G)
Filament3.15 V @ 0.6 mA
Construction
Primary TypePentode
EnvelopeGLASS BULB
SectionsSINGLE
Filament / Heater
MaterialCOATED UNIPOTENTIAL CATHODE
Warm-up Time11.6s
Heater Notes600 MA SERIES HEATER OPERATED
Absolute Maximum Ratings
Plate Voltage340 V
Plate Dissipation3.5 W
Grid 2 Voltage320 V
H-C Voltage200 V
Audio Performance
Key Features
- SHARP CUT-OFF CONTROL CHARACTERISTICS
- HIGH TRANSCONDUCTANCE
- LOW GRID PLATE CAPACITANCE
- CONTROLLED WARM-UP
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| CLASS A1 AMPLIFIER - PENTODE CONNECTION | 100 V | 3900 | 500000 | — | 5 mA |
| CLASS A1 AMPLIFIER - PENTODE CONNECTION | 250 V | 4500 | 1500000 | — | 7.6 mA |
| CLASS A1 AMPLIFIER - PENTODE CONNECTION | 250 V | 5200 | 1000000 | — | 10.6 mA |
| CLASS A1 AMPLIFIER - TRIODE CONNECTION | 250 V | 4800 | — | 36 | 12.2 mA |
Application Notes
INTENDED FOR SERVICE AS EITHER AN RF OR AF AMPLIFIER IN 600 MA SERIES HEATER RECEIVERS.
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