6HS6

Miniature pentode designed as an intermediate-frequency amplifier and limiter in FM receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7BK
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 450 mA

Description

Miniature type used as if-amplifier and limiter tube in FM receivers. Outlines section, 5C; requires miniature 7BK 7-contact socket. Heater Voltage (ac/dc) 6.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7BK
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7BK - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1G1	A	G1 — Control Grid EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN2G3	A	G3 — Suppressor GridGroup 7BK2 EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN2IS	A	IS — Internal ScreenGroup 7BK2 EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN3H	—	H — Heater EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN4H	—	H — Heater EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN5P	A	P — Plate (Anode) EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN6G2	A	G2 — Screen Grid EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK
PIN7K	A	K — Cathode EIA chart transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7BK

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 500000 Ω
Transconductance: 0.0095 S
Amplification factor: 50
Max plate voltage: 330 V
Max screen voltage: 330 V

Published maximum ratings and characteristic values promoted where applicable; additional table values retained in TUBE_SECTION_PARAMETER.

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

Pentode

Other

Plate voltage
150 V
ClassA
Plate current
8.8 mA
ClassA
Maximum plate voltage
330 V
Maximum screen-grid voltage
330 V
respect to cathode
200 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
respect to cathode
200 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid No.l to plate — published value 1
0 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid No.l to plate — published value 2
6 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
PLATE VOLTAGE
300 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
SUPPLY VOLTAGE
300 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Negative-bias value
50 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Positive-bias value
0 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
For grid-No.2 voltages up to 150 volts — published value 1
150 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
For grid-No.2 voltages up to 150 volts — published value 2
1 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
PLATE DISSIPATION
3 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
For fixed-bias operation
0.5 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
For cathode-bias operation
1 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.

Characteristics

Plate resistance
500000 ohm
ClassA
Transconductance
9500 uS
ClassA
Amplification factor
50
ClassA
Voltage (AC or DC) — published value 1
6.3 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Voltage (AC or DC) — published value 2
6.3 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Voltage (AC or DC) — published value 3
0.6 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Current — published value 1
450 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Current — published value 2
30 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Current — published value 3
450.6 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Warm-up time (Average)
11
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
and heater
8.8
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
internal shield, grid No:2,
2
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
and heater
5.2
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Plate Supply Voltage — published value 1
75 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Plate Supply Voltage — published value 2
150 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid-No.2 Supply Voltage — published value 1
75 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid-No.2 Supply Voltage — published value 2
75 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid-No.l Supply Voltage — published value 1
0 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid-No.l Supply Voltage — published value 2
0 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Cathode Resistor — published value 1
68 ohm
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Cathode Resistor — published value 2
68 ohm
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Plate Resistance (Approx )
0.5 Mohm
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Transconductance
9500
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Plate
8.8 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Grid-No.2 Current
2.8 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Pin 1 -Grid No.l — published value 1
1
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Pin 1 -Grid No.l — published value 2
4
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Pin 2-Grid No.3, — published value 1
2
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Pin 2-Grid No.3, — published value 2
5
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Internal
6
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Shield
7
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
Pin 3-Heater
3
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
For grid-No.2 voltages between 150 and
150 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
300 volts
300 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
a AL heater amperes = 0.450
450 mA
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
t! At heater volts = 6.j
6 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
GRID-No.2 VOLTS=75
75 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
PLATE VOLTS=150
150 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.
GRID—No.2 VOLTS=75
75 V
Published datasheet value; multiple values on one source row represent separate limits or operating conditions.

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater Warm-up Time (Average)
11 seconds
Heater Warm-up Time (Average) 11 seconds
Grid No.l to Plate
0.006 volts
Grid No.l to Plate 0.006 max volts
Grid No.l to Cathode, Heater, Grid No
3
Grid No.l to Cathode, Heater, Grid No.2, Grid No.3, and
Plate to Cathode, Heater, Grid No
3
Plate to Cathode, Heater, Grid No.2, Grid No.3, and
Plate Dissipation
3 volts
Plate Dissipation 3 volts
Grid-No
2
Grid-No.2 Input:
Grid No
3
Grid No.3 Connected to cathode at socket
• Grid No
2
• Grid No.2 connected to plate.

Characteristic

Plate Supply Voltage
300 volts
Plate Supply Voltage 300 volts
Grid-No
0 volts
Grid-No.3 (Suppressor-Grid) Voltage, Positive Value . 0 volts
Grid-No
300 volts
Grid-No.2 (Screen-Grid) Supply Voltage 300 volts
Grid-No
300
Grid-No.2 Voltage See curve page 300
For grid-No
1 volts
For grid-No.2 voltages up to 150 volts 1 watt
For grid-No
300 volts
For grid-No.2 voltages between 150 and 300 volts . . See curve page 300
Plate Supply Voltage
150 volts
Plate Supply Voltage 75 150 volts
Grid-No
75 volts
Grid-No.2 Supply Voltage 75 75 volts
Grid-No.l Supply Voltage
0 volts
Grid-No.l Supply Voltage 0 0 volts
Amplification Factor*
50
Amplification Factor* 50
Plate Resistance (Approx.)
0.5 megohm
Plate Resistance (Approx.) 0.5 megohm
Transconductance
9500
Transconductance 9500 /tmhos
Plate Current
8.8 mA
Plate Current 8.8 mA
Grid-No
2.8 mA
Grid-No.2 Current 2.8 mA