Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
PlateVoltageTypical
330 V
Published operating/characteristic value
Voltage Pentode - Remote Cutoff (single) ·Pentode
6GM6
Semi-remote-cutoff high-transconductance pentode designed for AGC-controlled television picture-IF amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7CM
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 400 mA
Description
Semiremote-cutoff pentode for gain-controlled television picture-IF amplification.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7CM
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 400 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7CM - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN2K | A | K — Cathode EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN3H | — | H — Heater EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN4H | — | H — Heater EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN5P | A | P — Plate (Anode) EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN6G2 | A | G2 — Screen Grid EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN7G3 | A | G3 — Suppressor GridGroup 7CM7 EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
| PIN7IS | A | IS — Internal ScreenGroup 7CM7 EIA chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 128, 7CM |
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 200000 Ω
- Transconductance
- 0.013 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 3.1 W
- Max screen dissipation
- 0.65 W
- Max cathode current
- 25 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.
Data set 02
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
6.3 V
Heater current
400 mA
Plate voltage
330 V
Typical operating conditions
Plate current
14 mA
Typical operating conditions
Data set 03
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Grid #1-to-plate capacitance
0.036 pF
Input capacitance
10 pF
Output capacitance
2.4 pF
Other
Plate supply voltage
125 V
ClassA
Screen supply voltage
125 V
ClassA
Cathode resistor
56 ohm
ClassA
Plate current
14 mA
ClassA
Screen current
3.4 mA
ClassA
Screen input dissipation up to 165 V
0.65 W
Characteristic
Grid #1 voltage at transconductance 60 uS
-25 V
Data set 04
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Typical Plate Voltage
125 V
ClassA
Typical Screen Voltage
125 V
ClassA
Characteristic
Typical Plate Current
14 mA
ClassA
Typical Screen Current
3.4 mA
ClassA
Data set 05
1971 RCA HB3 Binder 5 of 7
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
6.3 V
Heater current
450 mA
Plate supply voltage
125 V
ClassA
Screen supply voltage
125 V
ClassA
Cathode resistor
56 ohm
ClassA
Plate current
14 mA
ClassA
Screen current
3.4 mA
ClassA
Screen input dissipation up to 165 V
0.65 W
Capacitance
Grid #1-to-plate capacitance
0.036 pF
Input capacitance
10 pF
Output capacitance
2.4 pF
Characteristic
Grid #1 voltage at transconductance 60 uS
-25 V
Data set 06
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Grid No.1-to-plate capacitance
0.026 pF
Shielded
Plate-to-other-electrodes capacitance
3.4 pF
Shielded
Other
Plate voltage
125 V
Screen-grid supply voltage
125 V
Plate current
14 mA
Screen-grid current
3.4 mA