Tube-number record
3BU8
0 archive entries
3BU8 is a tube type in the TubeDatabase archive (class: Twin Pentode). Recorded specifications: brand Tung-Sol, year 1963, construction Pentode, base Small Button 9-Pin, socket Noval (B9A), maximum plate voltage 300 V, and maximum plate dissipation 1.1 W. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassTwin Pentode
BaseNoval (B9A)
Filament3.15 V @ 600 mA
Construction
Primary TypePentode
EnvelopeMiniature JEDEC 6-3
Base MaterialSmall Button 9-Pin
Sections2
Filament / Heater
Warm-up Time11s
Heater NotesAC or DC, Series or Parallel operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Both Sections Operating | 100 V | 1500 | — | — | 2.2 mA |
| Grid 3 Characteristics | 100 V | 180 | — | — | — |
Application Notes
Intended for use as a combined sync-separator and sync-clipper/AGC generator in television receivers. Noise pulses can be suppressed utilizing common Grid #1.
0 results