Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Transconductance
2150 uS
Typical
Other
Power Output
0.27 W
Typical
Power - Pentode (NOT beam) ·Pentode
3V4WA
Ruggedized version of the 3V4 directly heated power pentode, intended for military equipment and low-voltage audio power amplification. It combines battery operation with strengthened construction.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 2.5 V / 50 mA
Description
The 3V4WA is a ruggedized version of the 3V4 directly heated power pentode, intended for military equipment and low-voltage audio power-amplifier 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
- 2.5 V
- Nominal heater current
- 50 mA
- Parallel heater voltage
- 1.25 V
- Parallel heater current
- 100 mA
- Series capable
- Yes
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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 100000 Ω
- Transconductance
- 0.00215 S
- Max plate voltage
- 100 V
- Max screen voltage
- 200 V
- Max cathode current
- 13 mA
Published promoted fields populated by semantic headings; identical repeated sections compressed.
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 3 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Typical plate voltage
90 V
ClassA
Typical screen voltage
90 V
ClassA
Typical control-grid voltage
-4.5 V
ClassA
Typical plate current
9.5 mA
ClassA
Power output
0.27 W
ClassA
Maximum cathode current
13 mA
Maximum plate voltage
100 V
PromotedValue
Maximum screen voltage
200 V
PromotedValue
Maximum cathode current
13 mA
PromotedValue
Plate Voltage 90 85
90 V
PublishedTable
Screen Voi Ta Ge 90 85
90 V
PublishedTable
Peak Af Grid Voltage U.5 5
4.5 V
PublishedTable
Zero—Signal Plate Current 7.7 6.9
9.5 mA
PublishedTable
Zero—Signal Screen Current 1.7 1.5
2.1 mA
PublishedTable
Load Resistance 10 000 10 000 10
0 ohm
PublishedTable
Transconductance 2 000 1 975 2
150 ΜMHOS
PublishedTable
Maximum—S16Nal Power Output 0.24 0.25
0.27 W
PublishedTable
Characteristics
Plate resistance
100000 ohm
PromotedValue
Transconductance
0.00215 A/V
PromotedValue
1.25F20~ Volts
100 mA
PublishedTable