Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
4.7 V
Heater current
600 mA
SECTION 2
Pentode
Other
Heater voltage
4.7 V
Heater current
600 mA
Voltage Radio Detector Converter ·Pentode-Triode
5EH8
Medium-mu triode and sharp-cutoff pentode for VHF oscillator and mixer service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 4.7 V / 600 mA
Description
5EH8 is described in the supplied Tung-Sol datasheet as a medium-mu triode and sharp-cutoff pentode for VHF oscillator/mixer service. The redo includes a substantive section-electrical extraction from ratings and characteristic tables.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 4.7 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
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5000 Ω
- Transconductance
- 0.0075 S
- Amplification factor
- 40
- Max plate voltage
- 300 V
- Max plate dissipation
- 2 W
REDO: section-specific promoted ratings/characteristics populated from supplied datasheet.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 170000 Ω
- Transconductance
- 0.0075 S
- Max plate voltage
- 300 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 2.2 W
- Max screen dissipation
- 0.55 W
REDO: section-specific promoted ratings/characteristics populated from supplied 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
Characteristic
Heater/filament voltage
4.7 V
Published rating
Heater/filament current
600 mA
Published rating
Triode transconductance
7500 µS
TriodeSection
Triode amplification factor
40
TriodeSection
Pentode transconductance
6000 µS
PentodeSection
Pentode plate resistance
170000 ohm
PentodeSection
Other
Application
Combined VHF oscillator and mixer
TelevisionService
Triode plate voltage
125 V
TriodeSection
Triode plate current
13.5 mA
TriodeSection
Pentode plate voltage
125 V
PentodeSection
Pentode screen voltage
125 V
PentodeSection
Pentode grid voltage
-1 V
PentodeSection
Pentode plate current
12 mA
PentodeSection
Pentode screen current
4 mA
PentodeSection