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Tube Database (7,341 tube types · 1,270 archive entries)

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1B77 vacuum tube outline illustration

Tube-number record

1B77

0 archive entries

1B77 is a tube type in the TubeDatabase archive (class: Beta Counter Tube). Recorded specifications: brand Amperex, construction Other / special, base Stainless Steel, socket Special / none, and maximum plate voltage 1200 V. The archive does not yet hold a photographed example of this type.

BrandAmperex
ClassBeta Counter Tube
BaseSpecial / none

Construction

Primary TypeOther / special
EnvelopeMetal Shell with Mica Window
Base MaterialStainless Steel
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage1200 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Counter Operation1200 V————

Application Notes

Mica windows 5.6mg/cm2 thick will pass all beta radiation of energy in excess of 57 KEV when the source is in close proximity to the window.

Datasheets

Datasheet: 1B77.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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    Audio Performance

    Key Features
    • Mica window
    • Stainless steel cathode
    • Quenched argon filling
    • Infinite life expectancy