Tube-number record
5BKPI
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BrandETEL (Electronic Tubes Ltd)
ClassCathode Ray Tube
BaseCRT base (B12 family)
Filament6.3 V @ 550 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic/Metal
SectionsSingle beam
Filament / Heater
Heater NotesIndirectly-heated; suitable for parallel operation only
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation2 W
Grid 2 Voltage750 V
Grid 1 Voltage-200 V
H-C Voltage250 V
Audio Performance
Key Features
- Distributed post deflection acceleration (PDA)
- Flat screen
- Side connections for deflection plates
- Electrostatic focus and deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| PDA Operation | 10000 V | — | — | — | 0.025 mA |
Application Notes
Precision oscilloscope tube with two stages of distributed post deflection acceleration. Designed for symmetrical operation in X direction. High PDA ratios allow for high sensitivity.
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