Tube-number record
F-7172
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BrandITT
ClassDirect View Storage Cathode-Ray Tube (Iatron)
BaseMiniature 7-pin (B7G)
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeSymmetrical
Base MaterialPlastic Encapsulated
SectionsWriting gun and Flooding gun
Filament / Heater
Heater NotesWriting and Flooding sections respectively
Absolute Maximum Ratings
Plate Voltage5000 V
Grid 2 Voltage1100 V
Grid 1 Voltage100 V
H-C Voltage125 V
Audio Performance
Key Features
- Electrostatic focus
- Electrostatic deflection
- Bright daylight viewing
- Image amplification
- Aluminized phosphor screen
- No trapezoidal distortion
- Fast writing and high deflection speed
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Viewing | 4000 V | — | — | — | 0.75 mA |
Application Notes
Used as a panel-mounted indicator in aircraft. Deflection circuits can be included between tube neck and indicator case.
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