Tube-number record
252A
0 archive entries
252A is a tube type in the TubeDatabase archive (class: Moderate-power filamentary triode). Recorded specifications: brand Western Electric, construction Triode, base Medium four-pin thrust base, socket Special / none, and maximum plate voltage 500 V. The archive does not yet hold a photographed example of this type.
BrandWestern Electric
ClassModerate-power filamentary triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMedium four-pin thrust base
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical (300V) | 300 V | 2250 | 2300 | 5.08 | 19 mA |
| Typical (400V) | 400 V | 3100 | 1650 | 5.12 | 44 mA |
| Typical (450V) | 450 V | 3450 | 1500 | 5.14 | 60 mA |
Application Notes
When alternating current is used for heating the filament, the grid and plate returns should be connected to a center tap on the secondary of the filament transformer. For horizontal mounting, the plane of the filament should be vertical.
Datasheets
Datasheet: 252A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results