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Voltage - Triode (single) ·Triode

3S7BV1

Rugged indirectly heated low-frequency voltage amplifier triode.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
3.15 V / 440 mA

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
3.15 V
Nominal heater current
440 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 0

Triode

X-ray radiationInterelectrode capacitances
Amplification factor
71

Typical Va 250 V, Ia 5 mA; anode power 1.4 W; gm printed 4.2 mA/V.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

2026 Russian Receiving

Published operating points and test conditions from this source.

SECTION 0

Triode

Characteristic

  • Plate Voltage

    250 V

    Typical anode voltage

Other

  • Heater/filament voltage

    3.15 V

    Heater voltage

  • Heater/filament current

    440 mA

    Heater current