Tube-number record
B 13 S 25
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BrandRFT / WF
ClassOscilloscope Tube
Base14-pin all-glass
Filament6.3 V @ 450 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic/Metal
Sections2
Filament / Heater
Heater NotesParallel heating
Absolute Maximum Ratings
Plate Voltage8000 V
Grid 2 Voltage4000 V
Grid 1 Voltage-200 V
Cathode Current0.1 mA
H-C Voltage180 V
Audio Performance
Key Features
- Breitband-Zweistrahlröhre
- Planschirm
- Nachbeschleunigung
- Symmetrische Ablenkung
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Symmetrical Deflection | 4000 V | — | — | — | — |
Application Notes
Broadband dual-beam oscilloscope tube with flat screen and post-acceleration for symmetrical deflection.
Datasheets
Datasheet: B13S25.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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