Data set 01
2026 Russian Receiving
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Plate Voltage
150 V
Plate Current
14 mA
Plate Current
14 mA
Voltage Pentode - High Frequency (single) ·Pentode
6ZH21P
The 6ZH21P is a Russian miniature high-frequency pentode intended for wideband voltage preamplification. Its indirectly heated cathode and approximately 14.5 mA/V transconductance provide amplification in sensitive broadband input stages, with low microphonic characteristics suitable for demanding signal equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 345 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
- 6.3 V
- Nominal heater current
- 345 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 1
Pentode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0145 S
- Max plate dissipation
- 4 W
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.