Tube-number record
3FY5
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BrandTUNG-SOL
ClassShielded Triode
BaseMiniature 7-pin (B7G)
Filament3.1 V @ 0.45 mA
Construction
Primary TypeTriode
EnvelopeT-5 1/2
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesSeries Supply
Absolute Maximum Ratings
Plate Voltage200 V
Plate Dissipation2.2 W
Grid 1 Voltage-50 V
Cathode Current20 mA
H-C Voltage100 V
Audio Performance
Key Features
- Remote cut-off
- Frame grid
- Shielded triode
- Low noise figure at 220 MC/S
- Low supply voltage operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 135 V | 13000 | — | 70 | 11 mA |
| Cut-off characteristic 1 | 135 V | 625 | — | — | — |
| Cut-off characteristic 2 | 135 V | 125 | — | — | — |
Application Notes
Especially designed for service in VHF tuners of television receivers.
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