6GZ5

Seven-pin miniature power pentode intended for transformer-operated audio-output stages in radio and television receivers. Its compact construction provides conventional low-frequency output power.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7CV
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 380 mA

Description

The 6GZ5 is a 7-pin miniature power pentode intended for transformer-operated audio-output stages in radio and television receivers.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7CV
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 380 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7CV - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1G3	A	G3 — Suppressor GridGroup 7CV1 EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN1K	A	K — CathodeGroup 7CV1 EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN2G1	A	G1 — Control Grid EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN3H	—	H — Heater EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN4H	—	H — Heater EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN5G1	A	G1 — Control Grid EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN6G2	A	G2 — Screen Grid EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV
PIN7P	A	P — Plate (Anode) EIA chart transcription; independent manufacturer verification pending	Unverified EIA Base Connections, printed page 128, 7CV

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0084 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 4.8 W
Max screen dissipation: 1.1 W
Max cathode current: 30 mA

Audio-output power pentode.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate Voltage
200 V
Published operating/characteristic table
Screen Voltage
300 V
Published operating/characteristic table
Cathode Resistor
270 ohm
Published operating/characteristic table

Characteristic

Transconductance
8400 uS
Published operating/characteristic table
Plate Resistance
-15 ohm
Published operating/characteristic table

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Input capacitance
8.5 pF
Output capacitance
3.8 pF

Other

Plate supply voltage
250 V
ClassA1;Audio
Screen supply voltage
250 V
ClassA1;Audio
Cathode resistor
270 ohm
ClassA1;Audio
Load resistance
15000 ohm
ClassA1;Audio
Power output
2.1 W
ClassA1;Audio
Total harmonic distortion
10 %
ClassA1;Audio