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Tube-number record
EL37
3 archive entries
EL37 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Mullard, construction Pentode, socket Octal, maximum plate voltage 400 V, and maximum plate dissipation 25 W. The archive holds 3 photographed examples of this type.
BrandMullard
ClassOutput Pentode
BaseOctal
Filament6.3 V @ 1.4 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation25 W
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 11000 | 13500 | 10 | 100 mA |
| Triode Connected (Single Valve) | 300 V | 6500 | 1400 | 9 | 50 mA |
| Push-Pull (Self Bias) | 325 V | — | — | — | 77 mA |
Application Notes
Operating conditions provided for Pentode, Triode, and Push-Pull configurations including fixed and self-bias options.
Datasheets
Datasheet: EL37.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
