Tube-number record
4HA7
0 archive entries
4HA7 is a tube type in the TubeDatabase archive (class: Compactron Dissimilar Double Triode). Recorded specifications: brand General Electric, construction Dual triode, base Glass, socket Compactron, maximum plate voltage 330 V, and maximum plate dissipation 2.75 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassCompactron Dissimilar Double Triode
BaseCompactron
Filament4.2 V @ 600 mA
Construction
Primary TypeDual triode
EnvelopeT-9
Base MaterialGlass
Sections2
Filament / Heater
Warm-up Time11s
Heater NotesHeater voltage for a bogey tube at If = 600 mA
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 (Medium-Mu Triode) | 250 V | 2200 | 7700 | 17 | 10.5 mA |
| Section 2 (High-Mu Triode) | 250 V | 1600 | 62500 | 100 | 1.2 mA |
Datasheets
Datasheet: 4HA7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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