Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
5.2 V
Heater current
600 mA
SECTION 2
Triode
Other
Heater voltage
5.2 V
Heater current
600 mA
Voltage Triode Pentode ·Pentode-Triode
5DH8
Sharp-cutoff pentode and high-mu triode for television video-IF and detector/amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9EG
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 5.2 V / 600 mA
Description
5DH8 is described in the supplied Tung-Sol datasheet as a sharp-cutoff pentode and high-mu triode for video IF and detector/amplifier 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
- 9EG
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 5.2 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9EG - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Base Pin | B | G1 — Control Grid Original chart label: 2G1; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN2Base Pin | B | P — Plate (Anode) Original chart label: 2P; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN3Base Pin | A | G3 — Suppressor GridGroup 9EG3 Original chart label: 1G3; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN3Base Pin | B | K — CathodeGroup 9EG3 Original chart label: 2K; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN3Base Pin | — | IS — Internal ScreenGroup 9EG3 Original chart label: IS; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN4Base Pin | — | H — Heater Original chart label: H; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN5Base Pin | — | H — Heater Original chart label: H; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN6Base Pin | A | P — Plate (Anode) Original chart label: 1P; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN7Base Pin | A | G2 — Screen Grid Original chart label: 1G2; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN8Base Pin | A | K — Cathode Original chart label: 1K; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
| PIN9Base Pin | A | G1 — Control Grid Original chart label: 1G1; manufacturer verification pending | Unverified EIA Base Connections, printed page 132, 9EG |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 150000 Ω
- Transconductance
- 0.0086 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.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 12000 Ω
- Transconductance
- 0.0044 S
- Amplification factor
- 53
- Max plate voltage
- 300 V
- Max plate dissipation
- 1 W
- Max cathode current
- 12 mA
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
Pentode
Characteristic
Heater/filament voltage
5.2 V
Published rating
Heater/filament current
600 mA
Published rating
Pentode transconductance
8600 µS
PentodeSection
Pentode plate resistance
150000 ohm
PentodeSection
Triode amplification factor
53
TriodeSection
Triode transconductance
4400 µS
TriodeSection
Triode plate resistance
12000 ohm
TriodeSection
Other
Application
Video IF amplifier and high-mu triode service
TelevisionService
Pentode plate voltage
125 V
PentodeSection
Pentode screen voltage
125 V
PentodeSection
Pentode plate current
13.5 mA
PentodeSection
Pentode screen current
3.8 mA
PentodeSection
Triode plate voltage
250 V
TriodeSection
Triode plate current
7.3 mA
TriodeSection
Data set 03
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate Voltage
125 V
ClassA
Plate Current
13.5 mA
ClassA
SECTION 2
Triode
Other
Plate Voltage
250 V
ClassA
Plate Current
7.3 mA
ClassA