1AB5
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BrandTUNG-SOL
ClassVoltage Amplifier Pentode
BaseLock-In
Construction
Primary TypePentode
EnvelopeT-9
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation1 W
Grid 2 Voltage150 V
Audio Performance
Key Features
- Filamentary type
- Lock-in construction
- High transconductance
- Any mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 90V | 1100 | 275000 | - | 3.5mA |
| Class A1 Amplifier | 150V | 1350 | 125000 | - | 6.8mA |
Application Notes
Designed for use as a mixer or RF amplifier in circuits requiring higher transconductance than the 1LN5. Grid #1 resistor should be 1 Megohm under conditions of zero-bias.
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