Alternatives & variations Download PDF datasheet

Power - Pentode (NOT beam) ·Pentode-Triode

6KV8

High-mu triode plus frame-grid sharp-cutoff pentode for television receivers. The triode handles voltage, sync, or sound-IF functions while the pentode provides high-transconductance video output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9DX
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 775 mA

Description

High-mu triode plus frame-grid sharp-cutoff pentode; triode for voltage/sync/sound-IF service and pentode for television video output.

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: 9DX
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 775 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9DX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN12K	B	K — Cathode EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN22G1	B	G1 — Control Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN32P	B	P — Plate (Anode) EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN4H	—	H — Heater EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN5H	—	H — Heater EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN61G3	A	G3 — Suppressor GridGroup 9DX6 EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN6IS	A	IS — Internal ScreenGroup 9DX6 EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN61K	A	K — CathodeGroup 9DX6 EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN71G1	A	G1 — Control Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN81G2	A	G2 — Screen Grid EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX
PIN91P	A	P — Plate (Anode) EIA transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DX

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 17500 Ω
Transconductance: 0.004 S
Amplification factor: 70
Max plate voltage: 300 V
Max plate dissipation: 1 W

Representative electrical section from supplied RCA data sheet.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 75000 Ω
Transconductance: 0.023 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 5 W
Max screen dissipation: 1 W

Representative electrical section from supplied RCA data sheet.

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 01

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage nominal
6.3 V
Heater current
775 mA
Maximum plate voltage
300 V
Promoted field corroboration

Characteristics

Voltage I;~C or
6 V
Published table column
Current at heat~'~r vol±~ = t
3 A
Published table column
Plate resistance
17500 ohm
Promoted field corroboration
Transconductance
4000 µS
Promoted field corroboration
Amplification factor
70
Promoted field corroboration

SECTION 2

Pentode

Other

Heater voltage nominal
6.3 V
Heater current
775 mA
Plate Voltage
300 V
Published source row
Plate Voltage (value 2)
300 V
Published source row
Grid-No
2 V
Published source row
Grid-No (value 2)
300 V
Published source row
Grid-No
2
Published source row
Grid-No (value 2)
2
Published source row
Grid-No
2
Published source row
For grid-No
2 V
Published source row
For grid-No (value 2)
15 V
Published source row
For grid-No
2
Published source row
For grid-No (value 2)
150
Published source row
and
300 V
Published source row
and (value 2)
2 V
Published source row
Plate Dissipation I
5 W
Published source row

Characteristics

Voltage I;~C or
3 V
Published table column
Current at heat~'~r vol±~ = t
775 mA
Published table column
Plate Supply Voltage
125 V
Published source row
Plate Supply Voltage (value 2)
200 V
Published source row
Plate Voltage
200 V
Published source row
Grid-No
2 V
Published source row
Grid-No (value 2)
125 V
Published source row
Grid-No (value 3)
125 V
Published source row
Grid-No. l Supply Voltage
-2 V
Published source row
Cathode Resistor
82
Published source row
Cathode Resistor (value 2)
68
Published source row
Cathode Resistor (value 3)
2
Published source row
Plate Resistance (Approx )
17500
Published source row
Plate Resistance (Approx ) (value 2)
55000
Published source row
Plate Resistance (Approx ) (value 3)
75000
Published source row
Transconductance
4000
Published source row
Transconductance (value 2)
21000
Published source row
Transconductance (value 3)
23000
Published source row
i^ Plate Current
4 mA
Published source row
i^ Plate Current (value 2)
16.5 mA
Published source row
i^ Plate Current (value 3)
20 mA
Published source row
Grid-No
2 mA
Published source row
Grid-No (value 2)
3 mA
Published source row
Grid-No (value 3)
1 mA
Published source row
for plate current =
100 A
Published source row
for plate current = (value 2)
-4.5 A
Published source row
for plate current = (value 3)
-4.2 A
Published source row
GRID-No
2 V
Published source row
GRID-No (value 2)
12 V
Published source row
PLATE (Iyl OR GRID-No
2
Published source row
GRID-No
2 V
Published source row
GRID-No (value 2)
125 V
Published source row

Capacitance

Grid No
1 pF
Published source row
Grid No (value 2)
0.12 pF
Published source row
Grid No
1
Published source row
Grid No (value 2)
3
Published source row

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

• Plate dissipations up to
32 W
Published in approved 6KV8 target datasheet entry; Section1
Plate Voltage 300
300 V
Published in approved 6KV8 target datasheet entry; Section1
Grid-No.l (Control-Grid) Voltage, Positive-bias value 0
0 V
Published in approved 6KV8 target datasheet entry; Section1
Plate Dissipation 1
5 W
Published in approved 6KV8 target datasheet entry; Section1
For Grid-No.2 voltages up to
150 V
Published in approved 6KV8 target datasheet entry; Section1
For Grid-No.2 voltages between 150 and
300 V
Published in approved 6KV8 target datasheet entry; Section1
For fixed-bias operation 0.5
0.1 MΩ
Published in approved 6KV8 target datasheet entry; Section1
For cathode-bias operation 1
0.25 MΩ
Published in approved 6KV8 target datasheet entry; Section1
CM GRID -No
2 V
Published in approved 6KV8 target datasheet entry; Section1
Heater Voltage (ac/dc) 6.3
15 V
Published in approved 6KV8 target datasheet entry; Section1
Heater Current 1.1
450 mA
Published in approved 6KV8 target datasheet entry; Section1
Heater Warm-up Time (Average)
11 seconds
Published in approved 6KV8 target datasheet entry; Section1

Characteristic

Heater Voltage (ac/dc) 6.3
10.9 V
Published in approved 6KV8 target datasheet entry; Section1
Heater Current 0.775
450 mA
Published in approved 6KV8 target datasheet entry; Section1
Heater Warm-up Time (Average)
11 seconds
Published in approved 6KV8 target datasheet entry; Section1
Grid to Plate
3.7 pF
Published in approved 6KV8 target datasheet entry; Section1
and Internal Shield
2.5 pF
Published in approved 6KV8 target datasheet entry; Section1
Plate Supply Voltage 200 125
200 V
Published in approved 6KV8 target datasheet entry; Section1
Grid-No.2 Supply Voltage 125
125 V
Published in approved 6KV8 target datasheet entry; Section1
82
68 Ω
Published in approved 6KV8 target datasheet entry; Section1
17500 55000
75000 Ω
Published in approved 6KV8 target datasheet entry; Section1
4 16.5
20 mA
Published in approved 6KV8 target datasheet entry; Section1
3.1
3.5 mA
Published in approved 6KV8 target datasheet entry; Section1
100 /lA —4.5 — 4.2
-4.2 V
Published in approved 6KV8 target datasheet entry; Section1

Capacitance

and Internal Shield
2.4 pF
Published in approved 6KV8 target datasheet entry; Section1
Internal Shield
13 pF
Published in approved 6KV8 target datasheet entry; Section1
Internal Shield
4.8 pF
Published in approved 6KV8 target datasheet entry; Section1

SECTION 2

Pentode

Other

• Plate dissipations up to
32 W
Published in approved 6KV8 target datasheet entry; Section2
Plate Voltage 300
300 V
Published in approved 6KV8 target datasheet entry; Section2
Grid-No.l (Control-Grid) Voltage, Positive-bias value 0
0 V
Published in approved 6KV8 target datasheet entry; Section2
Plate Dissipation 1
5 W
Published in approved 6KV8 target datasheet entry; Section2
For Grid-No.2 voltages up to
150 V
Published in approved 6KV8 target datasheet entry; Section2
For Grid-No.2 voltages between 150 and
300 V
Published in approved 6KV8 target datasheet entry; Section2
For fixed-bias operation 0.5
0.1 MΩ
Published in approved 6KV8 target datasheet entry; Section2
For cathode-bias operation 1
0.25 MΩ
Published in approved 6KV8 target datasheet entry; Section2
CM GRID -No
2 V
Published in approved 6KV8 target datasheet entry; Section2
Heater Voltage (ac/dc) 6.3
15 V
Published in approved 6KV8 target datasheet entry; Section2
Heater Current 1.1
450 mA
Published in approved 6KV8 target datasheet entry; Section2
Heater Warm-up Time (Average)
11 seconds
Published in approved 6KV8 target datasheet entry; Section2

Characteristic

Heater Voltage (ac/dc) 6.3
10.9 V
Published in approved 6KV8 target datasheet entry; Section2
Heater Current 0.775
450 mA
Published in approved 6KV8 target datasheet entry; Section2
Heater Warm-up Time (Average)
11 seconds
Published in approved 6KV8 target datasheet entry; Section2
Grid to Plate
3.7 pF
Published in approved 6KV8 target datasheet entry; Section2
and Internal Shield
2.5 pF
Published in approved 6KV8 target datasheet entry; Section2
Plate Supply Voltage 200 125
200 V
Published in approved 6KV8 target datasheet entry; Section2
Grid-No.2 Supply Voltage 125
125 V
Published in approved 6KV8 target datasheet entry; Section2
82
68 Ω
Published in approved 6KV8 target datasheet entry; Section2
17500 55000
75000 Ω
Published in approved 6KV8 target datasheet entry; Section2
4 16.5
20 mA
Published in approved 6KV8 target datasheet entry; Section2
3.1
3.5 mA
Published in approved 6KV8 target datasheet entry; Section2
100 /lA —4.5 — 4.2
-4.2 V
Published in approved 6KV8 target datasheet entry; Section2

Capacitance

and Internal Shield
2.4 pF
Published in approved 6KV8 target datasheet entry; Section2
Internal Shield
13 pF
Published in approved 6KV8 target datasheet entry; Section2
Internal Shield
4.8 pF
Published in approved 6KV8 target datasheet entry; Section2