Tube-number record
303A
0 archive entries
303A is a tube type in the TubeDatabase archive (class: Duodiode Triode). Recorded specifications: brand Western Electric, construction Multi-section, base Medium six-pin type, socket Special / none, and maximum plate voltage 200 V. The archive does not yet hold a photographed example of this type.
BrandWestern Electric
ClassDuodiode Triode
BaseSpecial / none
Filament2 V @ 1.6 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Base MaterialMedium six-pin type
Sections3
Filament / Heater
Heater NotesIndirectly heated cathode; designed for operation on a voltage basis.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions 1 | 135 V | 829.4 | 17000 | 14.1 | 3 mA |
| Recommended Operating Conditions 2 | 135 V | 642.8 | 21000 | 13.5 | 2 mA |
| Recommended Operating Conditions 3 | 180 V | 794.1 | 17000 | 13.5 |
Application Notes
The 303A is used as a diode detector, diode rectifier for automatic volume control (AVC), and triode audio-frequency amplifier. Diodes can be used in parallel for half-wave or push-pull for full-wave rectification.
Datasheets
Datasheet: 303A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results