6AB7

Semi-remote-cutoff pentode designed for AGC-controlled television picture-IF or related television amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 8N
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 450 mA

Description

Television amplifier pentode covered on the same Sylvania sheet as 6AC7/1852; the source explicitly prints the designation 6AB7/1853.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8N
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8N - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1SH	A	SH — Internal Shield EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN2H	—	H — Heater EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN3G3	A	G3 — Suppressor Grid EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN4G1	A	G1 — Control Grid EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN5K	A	K — Cathode EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN6G2	A	G2 — Screen Grid EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN7H	—	H — Heater EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N
PIN8P	A	P — Plate (Anode) EIA transcription; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 129, 8N

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 700000 Ω
Transconductance: 0.005 S
Max plate voltage: 300 V
Max screen voltage: 200 V

Published promoted fields populated from the datasheet; identical repeated sections compressed 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 01

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Plate Resistance
700000 ohm
Transconductance
5000 µS
Amplification Factor
3500

Other

Maximum Plate Voltage
300 V
Maximum Screen Voltage
300 V
Typical Plate Current
12.5 mA
Typical Screen Current
3.2 mA

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Input capacitance
8 pF
Section1
Output capacitance
5 pF
Section1
Grid-to-plate capacitance
0.015 pF
Section1

Other

Plate voltage
300 V
ClassA
Screen voltage
200 V
ClassA
Control-grid voltage
-3 V
ClassA
Plate current
12.5 mA
ClassA
Screen current
3.2 mA
ClassA

Characteristic

Plate resistance
700000 Ω
ClassA
Transconductance
5000 µS
ClassA

Data set 03

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate Voltage
300 V
Typical
Screen Supply Voltage
200 V
Typical