Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristic
Plate resistance
150000 ohm
Published datasheet value
Power - Beam Single (NOT sweep) (under 10W) ·BeamPower
5902
Subminiature beam pentode designed for audio power amplification where compact construction and resistance to severe shock and vibration are important.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 8DL
- Socket code
- B7G
- Base pins
- 8
- Nominal heater
- 6.3 V / 450 mA
Description
Subminiature heater-cathode beam pentode designed for audio power-amplifier service where severe shock, vibration and compact construction are important.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8DL
- Socket code
- B7G
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
8DL - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN2G3 | A | G3 — Suppressor GridGroup 8DL2 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN2K | A | K — CathodeGroup 8DL2 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN3H | — | H — Heater EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN4G3 | A | G3 — Suppressor GridGroup 8DL4 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN4K | A | K — CathodeGroup 8DL4 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN5P | A | P — Plate (Anode) EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN6H | — | H — Heater EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN7G2 | A | G2 — Screen Grid EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN8G3 | A | G3 — Suppressor GridGroup 8DL8 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN8K | A | K — CathodeGroup 8DL8 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 150000 Ω
- Transconductance
- 0.0042 S
- Amplification factor
- 6
- Max plate voltage
- 165 V
- Max screen voltage
- 155 V
- Max plate dissipation
- 4.1 W
- Max screen dissipation
- 0.4 W
- Max cathode current
- 50 mA
Class A beam-power section; published 110-V operating point and capacitances retained as parameters.
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
1958 Compagnie General
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristics
Heater Voltage
6.3 V
Heater Current
450 mA
Other
Typical Power Output
1 W
ClassA
Data set 03
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Capacitance
Input Capacitance
6.5 pF
Output Capacitance
7.5 pF
Grid-to-Plate Capacitance
0.11 pF
Other
Plate Voltage
110 V
ClassA
Screen Voltage
110 V
ClassA
Cathode Resistor
270 ohm
ClassA
Plate Current
30 mA
ClassA
Screen Current
2.2 mA
ClassA
Load Resistance
3000 ohm
ClassA
Power Output
1 W
ClassA
Data set 04
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristic
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
450 mA
Plate Voltage
100 V
Screen Voltage
100 V
Grid Voltage
-8.3 V
Plate Current
30 mA
Screen Current
12 mA
Transconductance
4200 uS
PlateToGridCapacitanceMax
0.2 pF
Input Capacitance
6.5 pF
Output Capacitance
7.5 pF
Data set 05
1966 Tung Sol Electronic Tubes 3 of 4
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Heater voltage
6.3 V
Heater current
450 mA
Normal plate voltage
110 V
ClassA
Normal screen voltage
110 V
ClassA
Normal cathode resistor
270 ohm
ClassA
Plate current
30 mA
ClassA
Screen current
2.2 mA
ClassA
Power output
0.75 W
ClassA
Maximum plate voltage
165 V
Maximum screen voltage
155 V
Maximum plate dissipation
4.1 W
Maximum screen dissipation
0.3 W
Maximum cathode current
50 mA
Data set 06
1967 Mullard Receiving Tubes for Maintenance
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Capacitance
Plate-to-Grid Capacitance
<200 mpF
PublishedCapacitance
Input Capacitance
6.5 pF
PublishedCapacitance
Output Capacitance
7.5 pF
PublishedCapacitance
Characteristic
Plate Voltage
100 V
PublishedCharacteristics
Screen Voltage
100 V
PublishedCharacteristics
Plate Current
30 mA
PublishedCharacteristics
Screen Current
1.2 mA
PublishedCharacteristics
Transconductance
4200 uS
PublishedCharacteristics
Screen-to-Control-Grid Mu
6
PublishedCharacteristics
Plate Resistance
>10 kohm
PublishedCharacteristics
Control Grid Voltage
-8.3 V
PublishedCharacteristics
Other
Plate Supply Voltage
330 V
AbsoluteRatings
Plate Voltage
165 V
AbsoluteRatings
Plate Dissipation
3.7 W
AbsoluteRatings
Screen Supply Voltage
310 V
AbsoluteRatings
Screen Voltage
155 V
AbsoluteRatings
Screen Dissipation
0.4 W
AbsoluteRatings
Cathode Current
50 mA
AbsoluteRatings
Heater-Cathode Voltage
200 V
AbsoluteRatings
Data set 07
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Plate Voltage
110 V
ClassA
Screen Voltage
110 V
ClassA
Plate Current
30 mA
ClassA
Load Resistance
3000 ohm
ClassA
Power Output
1 W
ClassA
Distortion
10 %
ClassA
Data set 08
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Anode current
30 mA
Typical
Screen current
2.2 mA
Typical
Output power
1 W
Typical
Anode-screen-cathode-heater capacitance
7.2 pF
Interelectrode