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
No fixed ratings are recorded for this section.
Russian 6A10S indirectly heated oxide-cathode heptode for superheterodyne frequency conversion; heater nominal 6.3 V 0.3 A, range 0.275–0.325 A, glass envelope, reported octal C1-1-5A basing. Source summary gives anode voltage 250 V, anode current 4 mA (2.5–4.5 mA), grid-2 voltage 100 V, grid-4 100 V with grid-5 at 0 V, and anode power 1.1 W, but these are NOT explicitly identified as absolute maxima: prior max_plate_voltage 250 V and max_plate_dissipation 1.1 W cleared. Stated transconductance 4.7 mA/V (range 3.5–5.9 mA/V) is electrode-specific or unclear in heptode mixer service, so no intrinsic gm promoted without clarification. 1 physical heptode section, index normalized to 1.
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.
Plate Voltage
250 V
Typical heptode anode voltage
Heater/filament voltage
6.3 V
Heater voltage
Heater/filament current
300 mA
Heater current