Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Voltage
6.3 V
Heater Current
150 mA
Other
MaximumOperatingFrequency
900 MHz
Voltage Pentode - Sharp Cutoff (single) ·Pentode
6205
Sharp-cutoff subminiature high-frequency pentode. Its compact construction and fixed-gain RF characteristics suit miniature signal-amplifier stages where small physical size and high-frequency operation are important.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 8DC
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 150 mA
Description
Sharp-cutoff subminiature high-frequency pentode.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8DC
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 150 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
8DC - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN2K | A | K — Cathode EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN3H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN4G3 | A | G3 — Suppressor Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN5P | A | P — Plate (Anode) EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN6H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN7G2 | A | G2 — Screen Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
| PIN8K | A | K — Cathode EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DC |
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 260000 Ω
- Transconductance
- 0.005 S
- Max plate voltage
- 165 V
- Max screen voltage
- 155 V
- Max plate dissipation
- 1.1 W
- Max screen dissipation
- 0.55 W
- Max cathode current
- 16.5 mA
Subminiature sharp-cutoff RF pentode.
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
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Input capacitance
4.2 pF
Output capacitance
3.4 pF
Grid-to-plate capacitance
0.015 pF
Other
Plate voltage
100 V
ClassA
Screen-grid voltage
100 V
ClassA
Cathode-bias resistor
150 ohm
ClassA
Plate current
7.5 mA
ClassA
Screen-grid current
2.4 mA
ClassA
Characteristic
Plate resistance
260000 ohm
Transconductance
5000 uS
Data set 03
1960 RCA Industrial and Communications Types
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Voltage
6.3 V
Heater Current
150 mA
PrototypeType
5840
PremiumTube
Data set 04
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Plate Voltage
100 V
Service
High-frequency or on-off control amplifier
Data set 05
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
150 mA
Plate Voltage
100 V
Screen Voltage
100 V
Grid Voltage
-1.5 V
Plate Current
7.5 mA
Screen Current
2.4 mA
Transconductance
5000 uS
PlateToGridCapacitanceMax
0.015 pF
Input Capacitance
4.2 pF
Output Capacitance
3.4 pF
Data set 06
1966 Tung Sol Electronic Tubes 4 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater/filament voltage
6.3 V
Heater/filament current
150 mA
Application
Application summary
Sharp-cutoff subminiature high-frequency pentode.
Characteristic
Plate voltage
120 V
Screen voltage
120 V
Plate current
7.5 mA
Transconductance
5000 uS
Grid-to-plate capacitance
0.02 pF
Input capacitance
4.2 pF
Data set 07
1967 Mullard Receiving Tubes for Maintenance
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Plate-to-Grid Capacitance
<15 mpF
PublishedCapacitance
Input Capacitance
4.2 pF
PublishedCapacitance
Output Capacitance
3.4 pF
PublishedCapacitance
Characteristic
Plate Voltage
100 V
PublishedCharacteristics
Suppressor Grid Voltage
0 V
PublishedCharacteristics
Screen Voltage
100 V
PublishedCharacteristics
Control Grid Voltage
-1.5 V
PublishedCharacteristics
Plate Current
7.5 mA
PublishedCharacteristics
Screen Current
2.4 mA
PublishedCharacteristics
Transconductance
5000 uS
PublishedCharacteristics
Plate Resistance
>175 kohm
PublishedCharacteristics
Other
Plate Supply Voltage
330 V
AbsoluteRatings
Plate Voltage
165 V
AbsoluteRatings
Plate Dissipation
0.8 W
AbsoluteRatings
Screen Supply Voltage
310 V
AbsoluteRatings
Screen Voltage
155 V
AbsoluteRatings
Screen Dissipation
0.35 W
AbsoluteRatings
Cathode Current
16.5 mA
AbsoluteRatings
Heater-Cathode Voltage
200 V
AbsoluteRatings
Maximum Shock
500 g
AbsoluteRatings