Voltage - Triode (single high frequency) ·Triode
4BN4
VHF television-tuner RF triode for front-end amplification in television receivers.
- Sections
- 1
- Base
- 7EG
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 4.2 V / 300 mA
Description
VHF television-tuner RF triode; description derived from the supplied registration datasheet.
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
- 4.2 V
- Nominal heater current
- 300 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
- Plate resistance
- 6300 Ω
- Transconductance
- 0.0063 S
- Amplification factor
- 43
- Max plate voltage
- 250 V
- Max plate dissipation
- 2 W
Published source values promoted where applicable.
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.