18DZ8
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BrandTung-Sol
ClassTriode Pentode
Base9 Pin Miniature
Filament18V @ 0.3mA
Construction
Primary TypeTriode Pentode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation6.5 W
Grid 2 Voltage145 V
Cathode Current60 mA
H-C Voltage200 V
Audio Performance
Power Output2 W
Key Features
- High-Mu Triode
- Power Pentode
- Coated Unipotential Cathode
- Any Mounting Position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode section | 120V | 1400 | - | 100 | 0.8mA |
| Pentode section | 145V | 7500 | 2500 | - | 45mA |
Application Notes
Designed as a two stage audio frequency amplifier where the plate supply voltage is obtained from a single half-wave rectifier directly from the 120 volt AC line.
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