Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate Voltage
150 V
ClassA
Heater Warmup Time
11 s
Characteristic
Plate Current
3 mA
ClassA
TransconductancePublished
8000 uS
ClassA
Voltage - Triode (single high frequency) ·Triode
2BN4A
Medium-mu miniature triode used as the RF amplifier in grid-drive VHF television tuner circuits.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7EG
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 2.35 V / 600 mA
Description
Medium-mu miniature triode used as an RF amplifier in grid-drive VHF television tuner circuits.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7EG
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 2.35 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7EG - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1K | A | K — Cathode Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN2G1 | A | G1 — Control Grid Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN3H | — | H — Heater Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN4H | — | H — Heater Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN5P | A | P — Plate (Anode) Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN6K | A | K — Cathode Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
| PIN7G1 | A | G1 — Control Grid Chart transcription; independent verification pending | Unverified EIA Base Connections, printed page 129, 7EG |
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5400 Ω
- Transconductance
- 0.008 S
- Amplification factor
- 43
- Max plate voltage
- 275 V
- Max plate dissipation
- 2.2 W
- Max cathode current
- 22 mA
VHF grounded-grid RF amplifier triode.
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 Westinghouse Data Book
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater Voltage
2.35 V
Heater Current
600 mA
Grid-Plate Capacitance Shielded
1.2 pF
Input Capacitance Shielded
3.2 pF
Output Capacitance Shielded
1.4 pF
Other
Maximum Plate Voltage
275 V
Maximum Plate Dissipation
2.2 W
Maximum Cathode Current
22 mA
Maximum Grid Circuit Resistance
0.5 Mohm
Data set 03
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Grid-to-plate capacitance
1.2 pF
Section1
Input capacitance
3.2 pF
Section1
Output capacitance
1.4 pF
Section1
Heater-to-cathode capacitance
2.8 pF
Section1
Characteristic
Heater warm-up time
11 s
Section1
Amplification factor
43
Section1
Plate resistance
5400 Ω
Section1
Transconductance
8000 µS
Section1
Other
Plate voltage
150 V
ClassA
Cathode-bias resistor
220 Ω
ClassA
Plate current
9 mA
ClassA
Data set 04
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heat Voltage (ac/dc) 2.35 3
6.3 V
Published in approved target datasheet entry
Heater Current 0.6 0.45
200 mA
Published in approved target datasheet entry
Plate Voltage
275 V
Published in approved target datasheet entry
Grid Voltage, Positive-bias value
0 V
Published in approved target datasheet entry
Plate-Supply Voltage
150 V
Published in approved target datasheet entry
Cathode-Bias Resistor
220 ohm
Published in approved target datasheet entry
Plate Resistance (Approx.)
5400 ohm
Published in approved target datasheet entry
Transconductance
7700 µS
Published in approved target datasheet entry
Grid-Circuit Resistance
0.5 Mohm
Published in approved target datasheet entry
Capacitance
Grid to Cathode and Heater
3.2 pF
Published in approved target datasheet entry
Plate to Cathode and Heater
1.4 pF
Published in approved target datasheet entry
Characteristic
Plate Current
9 mA
Published in approved target datasheet entry