Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Service
Cascode VHF amplifier
Voltage - Dual Triode (similar high frequency) ·Triode-Triode
6CX7
Medium-mu twin triode specifically intended for cascode VHF amplifier service, with two electrically similar sections suited to grounded-grid and cascode tuner arrangements.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9FC
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 400 mA
Description
The 6CX7 is a medium-mu twin triode intended for cascode VHF amplifier service. The two triode sections are electrically identical and are suited to high-frequency grounded-grid/cascode arrangements.
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
- 9FC
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 400 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9FC - 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
- Transconductance
- 0.0064 S
- Amplification factor
- 39
- Max plate voltage
- 250 V
- Max plate dissipation
- 2 W
- Max cathode current
- 20 mA
Published promoted fields populated from printed headings.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0064 S
- Amplification factor
- 39
- Max plate voltage
- 250 V
- Max plate dissipation
- 2 W
- Max cathode current
- 20 mA
Second physical triode section; electrically identical twin section.
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
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Transconductance
6400 uS
EachUnit
Other
Maximum Cathode Current
20 mA
EachUnit
Data set 03
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
90 V
Section1,Section2
Grid voltage
0 V
Section1,Section2
Characteristic
Plate current
9 mA
Section1,Section2
Grid voltage for plate current 10 uA
-10 V
Section1,Section2