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
6800 uS
ClassA
Voltage - Triode (single) ·Triode
2BN4
General-purpose receiving triode for voltage amplification, detection, oscillator, or Class-A service as documented by the manufacturer.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 2.35 V / 600 mA
Description
Miniature indirectly heated triode for low-voltage amplifier service, paired with 2BN4A in the same data sheet.
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
- 2.35 V
- Nominal heater current
- 600 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
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 6300 Ω
- Transconductance
- 0.0078 S
- Amplification factor
- 43
- Max plate voltage
- 275 V
- Max plate dissipation
- 2.2 W
- Max cathode current
- 22 mA
Reference/heater-variant sheet; no unprinted electrical ratings were imported from the referenced 6-series 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
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
6300 Ω
Section1
Transconductance
7800 µS
Section1
Other
Plate voltage
150 V
ClassA
Cathode-bias resistor
220 Ω
ClassA
Plate current
9 mA
ClassA