Voltage - Triode (single) ·Triode
Victoreen 5803 directly heated subminiature electrometer triode for sensitive low-current DC amplification and radiation-measuring instruments.
Subminiature electrometer triode for radiation-measuring instrumentation and very-low-current amplifier service.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Victoreen 5803 low-microphonic electrometer triode for radiation instruments, replaces VX-32B. Filament nominal 1.25 V 10 mA, 1.1–1.5 V allowed; filament resistance 112–137 Ω. Max total cathode current 500 µA, grid leakage >=10^14 Ω. Mu 2.0 (range 1.8–2.2), gm 100 µmhos = 0.0001 A/V. Plate current 60–120 µA under manufacturer test conditions; original scan of bias/test labels ambiguous, so no specific bias scalar promoted. No max plate voltage published.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Filament Voltage
1.1 to 1.5 V
Filament Current
10 mA
Nominal
LeakageResistance
100000000000000 ohm
GridToAllOtherElements
Amplification Factor
1.8 to 2.2
Total Cathode Current
500 uA
Plate Current
60 to 120 uA