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 Triode Pentode ·Pentode-Triode
5GH8
Combined medium-mu triode and sharp-cutoff pentode for television horizontal oscillator, multivibrator, frequency-control, and related amplifier circuits.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9AE
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 4.7 V / 600 mA
Description
5GH8 is a TriodePentode device. Sharp-cutoff pentode plus medium-mu triode; pentode intended primarily as a television horizontal-deflection oscillator. Electrically identical to 6GH8 except heater characteristics.
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
- 9AE
- 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
9AE - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN12P | B | P — Plate (Anode) Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN21G1 | A | G1 — Control Grid Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN31G2 | A | G2 — Screen Grid Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN4H | — | H — Heater Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN5H | — | H — Heater Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN61P | A | P — Plate (Anode) Chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN71G3 | A | G3 — Suppressor GridGroup 9AE7 Source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN7IS | A | IS — Internal ScreenGroup 9AE7 Source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN71K | A | K — CathodeGroup 9AE7 Source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN82K | B | K — Cathode Source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
| PIN92G1 | B | G1 — Control Grid Source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9AE |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5400 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 46
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.5 W
Referenced ratings not printed in this source; not inferred.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 200000 Ω
- Transconductance
- 0.0075 S
- Max plate voltage
- 350 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 2.5 W
- Max screen dissipation
- 0.55 W
- Max cathode current
- 20 mA
Referenced ratings not printed in this source; not inferred.
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
Other
Plate voltage
125 V
TriodeSection
Grid voltage
-1 V
TriodeSection
Plate current
13.5 mA
TriodeSection
Characteristic
Transconductance
8500 uS
TriodeSection
Amplification factor
46
TriodeSection
Plate resistance
5.4 kOhm
TriodeSection
Capacitance
Grid-to-plate capacitance
1.6 pF
TriodeSection
SECTION 2
Pentode
Other
Maximum screen supply voltage
330 V
PentodeSection
Plate voltage
125 V
PentodeSection
Screen voltage
125 V
PentodeSection
Grid voltage
-1 V
PentodeSection
Plate current
12 mA
PentodeSection
Screen current
4 mA
PentodeSection
Peak cathode current
300 mA
PentodeSection; Pulse
Characteristic
Transconductance
7500 uS
PentodeSection
Plate resistance
200 kOhm
PentodeSection
Capacitance
Grid-to-plate capacitance
- to 0.015 pF
PentodeSection; Maximum
Data set 03
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Warmup Time
11 s