Tube-number record
GDT120M
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ClassTrigger Tube
BaseMiniature 7-pin (B7G)
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsTrigger tube with light diode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage340 V
Grid 1 Voltage155 V
Cathode Current9 mA
Audio Performance
Key Features
- Inexpensive
- Integrated light diode
- Suitable for operation in poor light conditions
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions | 315 V | — | 47000 | — | 3.5 mA |
Application Notes
Tubes may exhibit voltage jumps of up to 20 V in operation. Trigger bias +80 V with respect to cathode.
Datasheets
Datasheet: GDT120M.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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