Voltage - Triode (single) ·Triode
Russian 2S3A (2С3А) directly heated subminiature glass triode for radiosonde RF transmitters up to 230 MHz, with 2.4 V 122 mA filament.
2S3A triode from a Russian vacuum-tube reference; technical description translated to English.
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
Katsnelson/Larionov 1981 p79 original Russian 2С3А directly heated radiosonde triode. Nominal at filament 2.4 V, anode 65 V, grid -2 V: Ia 10.5±2.5 mA, mu 7.5±1.5, gm 0.0027 A/V (+0.0008/-0.0009). Former stored gm 0.0015 A/V is minimum acceptance at filament 2.0 V, not nominal. Reverse grid current <=0.5 µA, grid electron current <=0.5 mA at grid +2 V, grid-plate and grid-cathode insulation >=25 MΩ. Input capacitance 1.6±0.2 pF, output 3.1±0.45 pF, transfer 3.0 (+0.3/-0.7) pF. No specified maximum plate voltage or rp. Filament 2.4 V 122 mA, tolerance 110–135 mA.
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.
Heater current
199413 mA
Ток накала , . 22а 199413 мА
Transconductance
1.5 mA/V
крутизна характеристики при ИШв=2 В. . ‚ ‚ 1,5 мА/В