Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
5.6 V
Heater current
450 mA
SECTION 2
Pentode
Other
Heater voltage
5.6 V
Heater current
450 mA
Voltage Radio Detector Converter ·Pentode-Triode
5KD8
Combined triode-pentode used as an oscillator and mixer or frequency converter in television or VHF communications receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 5.6 V / 450 mA
Description
Miniature type used as combined vhf oscillator and mixer tube in television receivers. Outlines section, Ms T 6B; requires miniature 9-contact socket. 9AE
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
- 5.6 V
- Nominal heater current
- 450 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
- 330 V
- Max plate dissipation
- 2.5 W
Published source values promoted where applicable.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 200000 Ω
- Transconductance
- 0.005 S
- Amplification factor
- 40
- Max plate voltage
- 330 V
- Max screen voltage
- 165 V
- Max plate dissipation
- 3 W
- Max screen dissipation
- 0.55 W
Published source values promoted where applicable.
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
7500 uS
TriodeSection
Amplification factor
40
TriodeSection
SECTION 2
Pentode
Other
Maximum grid 2 supply voltage
330 V
PentodeSection
Plate voltage
125 V
PentodeSection
Grid 2 voltage
110 V
PentodeSection
Grid 1 voltage
-1 V
PentodeSection
Plate current
9.5 mA
PentodeSection
Grid 2 current
3.5 mA
PentodeSection
Characteristic
Transconductance
5000 uS
PentodeSection
Plate resistance
0.2 MOhm
PentodeSection
Zero-bias transconductance
5500 uS
Eg1=0V; Eg2=70V; Eplate=100V
Data set 03
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Voltage (ac/dc)
5.6 volts
Published value from supplied target entry
Heater Current
0.45 ampere
Published value from supplied target entry
Heater Warm-up Time
11 seconds
Published value from supplied target entry
Plate Voltage $
330 volts
Published value from supplied target entry
Grid-No
2
Published value from supplied target entry
Grid-No
300
Published value from supplied target entry
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published value from supplied target entry
Plate Dissipation
3 watts
Published value from supplied target entry
For grid-No
0.55 volts
Published value from supplied target entry
For grid-No
300 volts
Published value from supplied target entry
Plate Voltage
125 volts
Published value from supplied target entry
Grid-No.l Voltage
-1 volt
Published value from supplied target entry
Amplification Factor
40
Published value from supplied target entry
Plate Resistance (Approx.)
5000
Published value from supplied target entry
Transconductance
7600
Published value from supplied target entry
Plate Current
9.6 mA
Published value from supplied target entry
Grid-No
1
Published value from supplied target entry