Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Transconductance
11000 uS
ClassA1
Amplification Factor
60
ClassA1
Plate Resistance
5500 ohm
ClassA1
Voltage - Triode (single high frequency) ·Triode
2FQ5
High-mu VHF RF amplifier triode for low-voltage television-tuner service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 2.3 V / 600 mA
Description
High-mu VHF RF amplifier triode for low-voltage television-tuner service.
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
- 2.3 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
- 5500 Ω
- Transconductance
- 0.011 S
- Amplification factor
- 60
- Max plate voltage
- 200 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 22 mA
- Rectifier max heater-cathode voltage
- 100 V
- Rectifier warm-up time
- 11 s
Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.
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
0.4 ΜΜF
Capacitances | GRID TO PLATE 0.4 µµf
HEATER TO CATHODE
2.8 ΜΜF
Capacitances | HEATER TO CATHODE 2.8 µµf
Other
HEATER VOLTAGED
2.3 A
Maximum Ratings | HEATER VOLTAGED 2.3A . VOLTS
MAXIMUM PLATE DISSIPATION
2.5 W
Maximum Ratings | MAXIMUM PLATE DISSIPATION 2.5 WATTS
MAXIMUM NEGATIVE GRID VOLTAGE
50 V
Maximum Ratings | MAXIMUM NEGATIVE GRID VOLTAGE 50 VOLTS
HEATER WARM— UP TIME (AP PROX.)*
11 s
Maximum Ratings | HEATER WARM— UP TIME (AP PROX.)* 11.0 SECONDS
Characteristic
HEATER VOLTAGE D
2.3 A
ClassA | HEATER VOLTAGE D 2.3A VOLTS
HEATER CURRENT D
601.04 A
ClassA | HEATER CURRENT D 0.601.04 AMP.
PLATE VOLTAGE
135 V
ClassA | PLATE VOLTAGE 135 voLTs
GRID VOLTAGE —
1.2 V
ClassA | GRID VOLTAGE —1.2 VOLTS
PLATE CURRENT
11.5 mA
ClassA | PLATE CURRENT 11.5 MA•
TRANSCONDUCTANCE
0 ΜMHOS
ClassA | TRANSCONDUCTANCE 11 000 µMHOS
PLATE RESISTANCE (APPROX.)
500 ohm
ClassA | PLATE RESISTANCE (APPROX.) 5 500 OHMS