Data set 01
2026 Sovtek
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Power Output
-
HI-FI audio output service
Power - Beam (NOT sweep) ·BeamPower
5881WXT
Modern 5881-family beam tetrode designed for low-frequency power amplification in hi-fi audio-output stages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 900 mA
Description
5881WXT beam tetrode for low-frequency power amplification in HI-FI audio output stages.
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
- 900 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
Beam Power
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0052 S
- Max plate voltage
- 500 V
- Max screen voltage
- 450 V
- Max plate dissipation
- 23 W
- Max screen dissipation
- 6 W
Published ratings and characteristics promoted from the approved source.
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.