Data set 01
195X Tesla
Published operating points and test conditions from this source.
SECTION 1
Heptode
Other
Plate voltage
250 V
Screen-grid voltage
100 V
Capacitance
Input capacitance
7.2 pF
Voltage Radio Detector Converter ·Heptode
6H31
Variable-mu heptode frequency changer for superheterodyne radio receivers, providing mixer and conversion service with approximately 475 µS conversion transconductance.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 300 mA
Description
Variable-mu heptode for mixer and frequency-converter service; source also designates 6H31.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 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
Heptode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 500000 Ω
- Transconductance
- 0.000475 S
- Max plate voltage
- 300 V
- Max screen voltage
- 100 V
- Max plate dissipation
- 1 W
- Max screen dissipation
- 1 W
- Max cathode current
- 14 mA
Electrical section mapped from published characteristics and maximum ratings.
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 02
1969 Tesla Manual of Electronic Tubes
Published operating points and test conditions from this source.
SECTION 1
Heptode
Characteristics
Heater voltage
6.3 V
Published nominal value
Heater current
300 mA
Published nominal value
Other
Maximum plate dissipation
1 W
Published maximum rating
Application
Mixer
Printed source application