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Voltage Pentode - Remote Cutoff (single) ·Pentode

6EH7

Semi-remote-cutoff high-transconductance pentode for AGC-controlled IF amplification in color and monochrome television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9AQ
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 450 mA

Description

Semiremote-cutoff pentode used as an IF-amplifier tube in color and black-and-white television receivers.

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: 9AQ
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9AQ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1K	A	K — Cathode EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN2G1	A	G1 — Control Grid EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN3K	A	K — Cathode EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN4H	—	H — Heater EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN5H	—	H — Heater EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN6IS	A	IS — Internal Screen EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN7P	A	P — Plate (Anode) EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN8G2	A	G2 — Screen Grid EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ
PIN9G3	A	G3 — Suppressor Grid EIA chart transcription, manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AQ

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 250000 Ω
Transconductance: 0.0065 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.55 W
Max cathode current: 25 mA
Rectifier max heater-cathode voltage: 200 V
Rectifier warm-up time: 11 s

Published promoted fields populated from the printed semantic headings.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Heater Voltage.................. 3.4 4.4 6.3 Volts
6.3 V
Heater Voltage.................. 3.4 4.4 6.3 Volts
Heater Current. ... ... . 600 450 300 Ma
300 mA
Heater Current. ... ... . 600 450 300 Ma
Plate Voltage. . . ......... ... . it 200 Volts
200 V
Plate Voltage. . . ......... ... . it 200 Volts
Grid No. 3 Voltage. . . ........ ... ... ... ......... 0 Volts
0 V
Grid No. 3 Voltage. . . ........ ... ... ... ......... 0 Volts
Grid No. 2 Voltage. . . ............... ... .. 90 Volts
90 V
Grid No. 2 Voltage. . . ............... ... .. 90 Volts
Grid No.1 Voltage. . . ............ ... ... -2 Volts
-2 V
Grid No.1 Voltage. . . ............ ... ... -2 Volts
Plate Current. . ... ... ... ... .. ... . ... . .. 12 Ma
12 mA
Plate Current. . ... ... ... ... .. ... . ... . .. 12 Ma
Grid No.2 Current. ... ... ... ... .. ... ... .. 4.5 Ma
4.5 mA
Grid No.2 Current. ... ... ... ... .. ... ... .. 4.5 Ma
Transconductance. . ... .......... ... ... . .......... 12,500 umhos
12.5 umhos
Transconductance. . ... .......... ... ... . .......... 12,500 umhos
Plate Resistance {(approx.).......................... 0.5 Megohm
0.5 Megohm
Plate Resistance {(approx.).......................... 0.5 Megohm
Plate Voltage. . . ...... ... ... ... . .. .. ... . ... 200 Volts
200 V
Plate Voltage. . . ...... ... ... ... . .. .. ... . ... 200 Volts
Grid No. 3 Voltage. . . ............... ... ... .. ..., 0 Volts
0 V
Grid No. 3 Voltage. . . ............... ... ... .. ..., 0 Volts

Other

Plate Voltage with Ib = 550 Volts Max.
550 V
Plate Voltage with Ib = 550 Volts Max.
Plate Voltage. . . ......................... .. .. 250 Volts Max.
250 V
Plate Voltage. . . ......................... .. .. 250 Volts Max.
Plate Dissipation. ................................. 2.5 Watts Max.
2.5 W
Plate Dissipation. ................................. 2.5 Watts Max.
Grid No. 2 Dissipation. ............................ 0.65 Watts Max.
0.65 W
Grid No. 2 Dissipation. ............................ 0.65 Watts Max.
Cathode Current. .. ........... ... ... .. ........... 20 Ma Max.
20 mA
Cathode Current. .. ........... ... ... .. ........... 20 Ma Max.
Grid No. 1 Circuit Resistance. ...................... 1.0 Megohm Max.
1 Megohm
Grid No. 1 Circuit Resistance. ...................... 1.0 Megohm Max.

Data set 02

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Plate voltage
170 V
Point1
Screen-grid voltage
90 V
Point1
Control-grid voltage
-1.8 V
Point1
Plate current
14 mA
Point1
Screen-grid current
5.3 mA
Point1
Transconductance
14000 uS
Point1
Plate resistance
350000 Ohm
Point1
Plate voltage
200 V
Point2
Transconductance
12500 uS
Point2
Plate resistance
500000 Ohm
Point2
Plate voltage
230 V
Point3
Transconductance
10600 uS
Point3
Plate resistance
640000 Ohm
Point3

Capacitance

Input capacitance
9.5 pF
Output capacitance
3 pF
Grid-to-plate capacitance maximum
0.0055 pF

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Transconductance
6500 uS
Typical

Data set 04

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
200 V
IFAmplifier
Screen voltage
20 V
IFAmplifier
Control-grid voltage
-2 V
IFAmplifier
Plate current
12 mA
IFAmplifier
Screen current
4.5 mA
IFAmplifier
Application
Frame-grid remote-cutoff IF amplifier for television
Section1

Characteristic

Plate resistance
500000 Ω
IFAmplifier
Transconductance
12500 µS
IFAmplifier

Data set 05

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
200 V
IF-Amplifier
Grid 2 voltage
90 V
IF-Amplifier
Grid 1 voltage
-2 V
IF-Amplifier
Plate current
12 mA
IF-Amplifier
Grid 2 current
4.5 mA
IF-Amplifier

Characteristic

Grid 1 impedance at 40 MHz
13 kohm
IF-Amplifier

Data set 06

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

I. 11.6 11.8 11 .7
11.4 mA
Published in approved EF183 target datasheet entry; Section1
Ig2 4.3 4.4 4.4
4.3 mA
Published in approved EF183 target datasheet entry; Section1
gm 12 .3 12.4 12 .2
12 mA
Published in approved EF183 target datasheet entry; Section1
Itota1 16 27 24
21 mA
Published in approved EF183 target datasheet entry; Section1
I. 11.8 11.9 12
11.6 mA
Published in approved EF183 target datasheet entry; Section1
Ig2 4.4 4.5 4.5
4.4 mA
Published in approved EF183 target datasheet entry; Section1
gm 12.3 12.5 12.5
15.5 mA
Published in approved EF183 target datasheet entry; Section1
ltotal 19.7 18 .5 14.7
16 mA
Published in approved EF183 target datasheet entry; Section1
la 11.7 12 11.8
11.4 mA
Published in approved EF183 target datasheet entry; Section1
Ig2 4.3 4.5 4.4
4.3 mA
Published in approved EF183 target datasheet entry; Section1
gm 12.4 13 12.3
12 mA
Published in approved EF183 target datasheet entry; Section1
Itotal 16 27 24
21 mA
Published in approved EF183 target datasheet entry; Section1
la 11.8 12
12 mA
Published in approved EF183 target datasheet entry; Section1
Ig2 4.4 4.5
4.5 mA
Published in approved EF183 target datasheet entry; Section1
gm 12 .4 12 .5 12
5 mA
Published in approved EF183 target datasheet entry; Section1
Ito'al 19.7 18.5
17.5 mA
Published in approved EF183 target datasheet entry; Section1
Pg2 max
650 mW
Published in approved EF183 target datasheet entry; Section1
Ik max
20 mA
Published in approved EF183 target datasheet entry; Section1

Data set 07

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater voltage
6.3 V
Heater current
300 mA
Plate voltage
200 V
ClassA
Screen voltage
90 V
ClassA
Grid voltage
-2 V
ClassA
Plate current
12 mA
ClassA
Screen current
4.5 mA
ClassA
Maximum plate voltage
250 V
Maximum screen voltage
250 V
Maximum cathode current
25 mA
Plate dissipation
2.5 W

Characteristic

Plate resistance
500000 ohm
ClassA
Transconductance
12500 uS
ClassA
Grid voltage for transconductance 125 uS
-19.5 V
RemoteCutoff
Grid voltage for transconductance 625 uS
-9.5 V
RemoteCutoff

Capacitance

Grid-to-plate capacitance
0.005 pF

Data set 08

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater Voltage (ac/dc) 3.4 4.4
6.3 V
Published in approved XF183 target datasheet entry; Section1
Heater Current 0.6 0.45
300 mA
Published in approved XF183 target datasheet entry; Section1
Plate Supply Voltage
550 V
Published in approved XF183 target datasheet entry; Section1
Plate Voltage
250 V
Published in approved XF183 target datasheet entry; Section1
Grid-No.3 (Suppressor-Grid) Voltage, Positive value
0 V
Published in approved XF183 target datasheet entry; Section1
Grid-No.2 (Screen-Grid) Supply Voltage
550 V
Published in approved XF183 target datasheet entry; Section1
Grid-No.2 Voltage
250 V
Published in approved XF183 target datasheet entry; Section1
Cathode Current
20 mA
Published in approved XF183 target datasheet entry; Section1
Plate Dissipation
2.5 W
Published in approved XF183 target datasheet entry; Section1
Grid-No.2 Input
0.65 W
Published in approved XF183 target datasheet entry; Section1
Plate Voltage
200 V
Published in approved XF183 target datasheet entry; Section1
Grid-No.2 Voltage
90 V
Published in approved XF183 target datasheet entry; Section1

Characteristic

Grid-No. 1 Voltage
-2 V
Published in approved XF183 target datasheet entry; Section1
Plate Resistance (Approx.)
0.5 MΩ
Published in approved XF183 target datasheet entry; Section1
Transconductance
12500 µS
Published in approved XF183 target datasheet entry; Section1
Plate Current
12 mA
Published in approved XF183 target datasheet entry; Section1
Grid-No.2 Current
4.5 mA
Published in approved XF183 target datasheet entry; Section1