8LT8
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BrandGeneral Electric
ClassTriple Diode-Pentode
BaseNoval (B9A)
Filament8.1V @ 450mA
Construction
Primary TypePentode
EnvelopeT-6 1/2
Base MaterialGlass
Sections3
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Heater NotesHeater current is 0.45 +/- 0.03 Amperes
Absolute Maximum Ratings
Plate Voltage330 V
Grid 2 Voltage330 V
Cathode Current5 mA
H-C Voltage200 V
Audio Performance
Key Features
- Miniature tube
- Internal shield
- Intended for horizontal oscillator and AFC service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 125V | 13000 | 200000 | - | - |
Application Notes
The equipment manufacturer should design so that initially and throughout life no design-maximum value for the intended service is exceeded with a bogey tube.
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