Tube-number record
7TO3A
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ClassRadar Tube
BaseOctal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater Notesa.c. or d.c. volts
Absolute Maximum Ratings
Plate Voltage8000 V
Grid 2 Voltage700 V
Grid 1 Voltage-195 V
H-C Voltage125 V
Audio Performance
Key Features
- Aluminium Backed Screen
- Orange Fluorescence
- Magnetic Focus
- Magnetic Deflection
- Long Persistence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 4000 V | — | — | — | — |
| Typical Operation 2 | 7000 V | — | — | — | — |
Application Notes
Radar Tube with recessed small ball anode cap and International Octal base.
Datasheets
Datasheet: 7TO3A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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