Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 2
Pentode
Other
PlateVoltageTypical
350 V
Published operating/characteristic value
Voltage Triode Pentode ·Pentode-Triode
6HC8
Triode-pentode combination tube; available source material does not establish a narrower functional application confidently.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
Combined triode-pentode receiving tube.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 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
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published section data extracted from approved source.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0051 S
- Max plate voltage
- 350 V
- Max screen voltage
- 315 V
- Max plate dissipation
- 11 W
- Max screen dissipation
- 1.5 W
- Max cathode current
- 65 mA
Published section data extracted from 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.