Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Voltage
6.3 V
Heater Current
350 mA
Voltage - Dual Triode (similar) ·Triode-Triode
6045
Miniature medium-mu double triode with high transconductance and two similar sections, intended for Class-A voltage-amplifier service where relatively high gain and current capability are useful.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 7BF
- Socket code
- B7G
- Base pins
- -
- Nominal heater
- 6.3 V / 350 mA
Description
Miniature double triode with identical sections and published high transconductance.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7BF
- Socket code
- B7G
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 350 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7BF - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN12P | B | P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN21P | A | P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN3H | — | H — Heater EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN4H | — | H — Heater EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN51G1 | A | G1 — Control Grid EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN62G1 | B | G1 — Control Grid EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
| PIN7K | A | K — Cathode EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BF |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5900 Ω
- Transconductance
- 0.0064 S
- Amplification factor
- 38
- Max plate voltage
- 330 V
- Max plate dissipation
- 1.6 W
- Max cathode current
- 22 mA
Twin triode; identical active sections represented once; section-specific output capacitances preserved as parameters.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5900 Ω
- Transconductance
- 0.0064 S
- Amplification factor
- 38
- Max plate voltage
- 330 V
- Max plate dissipation
- 1.6 W
- Max cathode current
- 22 mA
Second physical triode section; electrically identical twin section.
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
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Input capacitance
2 pF
Output capacitance section 1
0.45 pF
Section1;Section2
Output capacitance section 2
0.34 pF
Section1;Section2
Grid-to-plate capacitance
1.3 pF
Other
Plate voltage
100 V
ClassA;PerSection
Cathode resistor
50 ohm
ClassA;PerSection
Plate current
9 mA
ClassA;PerSection
Plate resistance
5900 ohm
ClassA;PerSection
Transconductance
6400 uS
ClassA;PerSection
Amplification factor
38
ClassA;PerSection