BS440
0 Tubes in archive
BrandEnglish Electric Valve Company Limited
ClassTR Tube
BaseUG-39/U Waveguide Coupler
Construction
Primary TypeBroad-band single primer TR tube
EnvelopeMetal/Waveguide
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1100 V
Plate Dissipation0.1 W
Cathode Current0.15 mA
Audio Performance
Key Features
- Broad-band
- Single primer
- X-Band
- Tin or silver plated flange faces
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Primer Operation | -1000V | - | - | - | 0.11mA |
Application Notes
The primer supply voltage must be applied at least 5 seconds before the tube is required to operate. Primer current must be limited by a series resistance of 5.5 Megohms.
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