Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Heptode
Characteristic
Conversion Transconductance
550 uS
Typical
Voltage Radio Detector Converter ·Heptode
7Q7
Receiver oscillator-converter combining local oscillation and signal mixing for superheterodyne frequency conversion. Its multi-grid structure integrates the front-end frequency-changing functions in one envelope.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater
- 7 V / 320 mA
Description
Heptode converter, GT-equivalent to 6SA7GT.
Socket description
Loctal 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater voltage
- 7 V
- Nominal heater current
- 320 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
- Max plate voltage
- 200 V
- Max screen voltage
- 100 V
- Max screen dissipation
- 1 W
- Max cathode current
- 14 mA
- Rectifier max heater-cathode voltage
- 90 V
Published promoted fields populated by semantic section ownership; identical repeated sections compressed.
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.