6AV8

Triode-pentode combination intended for Class-A amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9DZ
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 650 mA

Description

Triode-pentode combination for Class A amplifier service.

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: 9DZ
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 650 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9DZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Pin 1	B	K — Cathode Original chart label: 2K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN2Pin 2	B	G1 — Control Grid Original chart label: 2G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN3Pin 3	B	P — Plate (Anode) Original chart label: 2P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN4Pin 4	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN5Pin 5	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN6Pin 6	A	G1 — Control Grid Original chart label: 1G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN7Pin 7	A	G3 — Suppressor GridGroup 9DZ7 Original chart label: 1G3; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN7Pin 7	A	K — CathodeGroup 9DZ7 Original chart label: 1K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN7Pin 7	—	IS — Internal ScreenGroup 9DZ7 Original chart label: IS; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN8Pin 8	A	G2 — Screen Grid Original chart label: 1G2; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ
PIN9Pin 9	A	P — Plate (Anode) Original chart label: 1P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9DZ

Section ratings

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 300000 Ω
Transconductance: 0.0062 S
Max plate voltage: 300 V
Max screen voltage: 150 V

Pentode section.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5750 Ω
Transconductance: 0.0033 S
Amplification factor: 19
Max plate voltage: 300 V

Triode section.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
200 V
ClassA
Screen-grid voltage
150 V
ClassA
Cathode resistor
180 ohm
ClassA
Plate current
9.5 mA
ClassA
Screen-grid current
2.8 mA
ClassA

SECTION 2

Triode

Other

Plate voltage
200 V
ClassA
Grid voltage
-6 V
ClassA
Plate current
13 mA
ClassA