Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Warmup Time
11 s
Voltage Pentode - Sharp Cutoff (single) ·Pentode
4CB6
Sharp-cutoff pentode designed for television IF, picture-IF, video, or VHF tuner amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 4.2 V / 450 mA
Description
Sharp-cutoff pentode used as a television IF amplifier to about 45 MHz and as an RF amplifier in VHF television tuners.
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
- 4.2 V
- Nominal heater current
- 450 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
- 280000 Ω
- Transconductance
- 0.008 S
- Max plate voltage
- 300 V
- Max screen voltage
- 150 V
- Max plate dissipation
- 2.3 W
- Max screen dissipation
- 0.55 W
- Rectifier warm-up time
- 11 s
Reference/equivalence-only source: ratings/characteristics for this section are not reproduced; missing promoted values intentionally not inferred from the external 6CB6-A datasheet.
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
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
125 V
Screen-grid voltage
125 V
Cathode bias resistor
56 Ohm
Plate current
13 mA
Characteristics
Plate resistance
280000 Ohm
Transconductance
8000 uS
Control-grid cutoff voltage
-6.5 V
Capacitance
Grid-to-plate capacitance
0.025 pF
Unshielded
Input capacitance
6.5 pF
Unshielded
Output capacitance
2 pF
Unshielded
Data set 03
1965 Westinghouse Data Book
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Heater Voltage
4.2 V
Heater Current
450 mA
Transconductance
10000 uS
RepresentativePublishedPoint
Plate Resistance
280000 ohm
RepresentativePublishedPoint
Grid-Plate Capacitance
0.55 pF
PublishedDirectInterelectrodeCapacitance
Other
Maximum Plate Voltage
330 V
Maximum Plate Dissipation
2.3 W
Data set 04
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate voltage
125 V
IFAmplifier
Screen voltage
125 V
IFAmplifier
Plate current
13 mA
IFAmplifier
Screen current
4 mA
IFAmplifier
Characteristic
Transconductance
9500 µS
Section1
Plate resistance
300000 Ω
Section1
Data set 05
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater Voltage
4.2 V
Heater Current
450 mA
Data set 06
1971 RCA HB3 Binder 4 of 7
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater Current
420 mA to 480 mA
Published nominal ± tolerance
Heater Voltage
4.2 V
At heater current 0.45 A
Warm-Up Time
11 s
Average
Peak Heater-Cathode Voltage - Heater Negative
300 V
DC component must not exceed 200 V
Peak Heater-Cathode Voltage - Heater Positive
200 V
DC component must not exceed 100 V
Plate Voltage
125 V
Inherited from explicitly referenced 6-volt parent type; heater variant
Screen Voltage
125 V
Inherited from explicitly referenced 6-volt parent type; heater variant
Cathode Bias Resistor
56 Ω
Inherited from explicitly referenced 6-volt parent type; heater variant
Plate Current
13 mA
Inherited from explicitly referenced 6-volt parent type; heater variant
Screen Current
3.7 mA
Inherited from explicitly referenced 6-volt parent type; heater variant
Characteristics
Plate Resistance
280000 Ω
Inherited from explicitly referenced 6-volt parent type; heater variant
Transconductance
8000 µS
Inherited from explicitly referenced 6-volt parent type; heater variant
Data set 07
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
about
45 MHz
Published in approved 6CB6A target datasheet entry; Section1
Heater Voltage (ac/dc) 3.15 4.2
6.3 V
Published in approved 6CB6A target datasheet entry; Section1
Heater Current 0.6 0.45
300 mA
Published in approved 6CB6A target datasheet entry; Section1
Heater Warm-up Time (Average) 11 11
11 seconds
Published in approved 6CB6A target datasheet entry; Section1
Plate Voltage
330 V
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.S (Suppressor-Grid) Voltage, Positive value
0 V
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.2 Supply Voltage
330 V
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 V
Published in approved 6CB6A target datasheet entry; Section1
For grid-No.2 voltages between 165 and
330 V
Published in approved 6CB6A target datasheet entry; Section1
Plate Supply Voltage
125 V
Published in approved 6CB6A target datasheet entry; Section1
Cathode-Sias Resistor
56 Ω
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.2 Current
3.7 mA
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.l VoJt&ge (Approx.) for plate current of 20 jiA
-6.5 V
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.l Voltage (Approx.) for plate current of
2.8 mA
Published in approved 6CB6A target datasheet entry; Section1
Grid-No.l Voltage (Approx.) for plate current of 2.8 mA
-3 V
Published in approved 6CB6A target datasheet entry; Section1
Capacitance
Grid No. 3. and Internal Shield 6.5
6.6 pF
Published in approved 6CB6A target datasheet entry; Section1