Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Voltage
13.5 V
Heater Current
150 mA
Voltage Pentode - Sharp Cutoff (single) ·Pentode
7056
Sharp-cutoff pentode designed for RF, IF, wide-band, or high-frequency voltage-amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 13.5 V / 150 mA
Description
Sharp-cutoff high-frequency pentode for wide-band communications amplifiers.
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
- 13.5 V
- Nominal heater current
- 150 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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 600000 Ω
- Transconductance
- 0.0062 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 2 W
- Max screen dissipation
- 0.6 W
- Max cathode current
- 20 mA
Published RCA ratings and characteristics promoted where applicable; additional application and operating data retained as parameters.
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
1960 RCA Industrial and Communications Types
Published operating points and test conditions from this source.
SECTION 1
Pentode
CrossReference
Prototype / equivalent family
6CB6
Characteristics
Cutoff characteristic
Sharp cutoff
Other
Maximum useful frequency
45 MHz
Data set 03
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Voltage
13.5 V
Heater Current
150 mA
Heater Voltage Minimum
12 V
Heater Voltage Maximum
15 V
GridToPlateCapacitanceMaximum
0.02 pF
Input Capacitance
6.5 pF
Output Capacitance
2 pF
Plate Voltage
125 V
Screen Voltage
125 V
Cathode Bias Resistance
56 ohm
Plate Current
13 mA
Screen Current
3.7 mA
Plate Resistance
280000 ohm
Transconductance
8000 uS
GridCutoffBias
-6.5 V
Data set 04
1971 RCA HB3 Binder 3 of 7
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
13.5 V
Heater current
150 mA
Plate-supply voltage
200 V
ClassA
Screen-supply voltage
150 V
ClassA
Cathode resistor
180 ohm
ClassA
Plate current
9.5 mA
ClassA
Screen current
2.8 mA
ClassA
Characteristic
Plate resistance
600000 ohm
ClassA
Transconductance
6200 uS
ClassA
Capacitance
Grid-to-plate capacitance
0.01 pF
WithExternalShield
Input capacitance
6.5 pF