Tube-number record
EF734
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EF734 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Mullard, construction Pentode, socket B8D / B8F, maximum plate voltage 165 V, and maximum plate dissipation 1.1 W. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassPentode
BaseB8D / B8F
Filament6.3 V @ 150 mA
Construction
Primary TypePentode
EnvelopeSubminiature
Filament / Heater
Absolute Maximum Ratings
Plate Voltage165 V
Plate Dissipation1.1 W
Grid 2 Voltage155 V
Grid 1 Voltage-55 V
Cathode Current16.5 mA
H-C Voltage200 V
Audio Performance
Key Features
- High slope
- Subminiature
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 100 V | 5000 | 260000 | — | 7.5 mA |
Application Notes
The suppressor grid should not be used for control or gating purposes. Soldered connections must be at least 5mm from seal. Bending of leads must be at least 1.5mm from seal. Adequate cooling required (e.g., metal clip to heat sink).
Datasheets
Datasheet: EF734.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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