6SV7

Diode plus sharp-cutoff RF pentode designed for AM detection, voltage amplification, and FM limiting below about 30 MHz. Its radio detector role is integral despite the sharp-cutoff amplifier section.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 7AZ
Socket code: -
Base pins: 8
Nominal heater: 6.3 V / 300 mA

Description

Combined diode and sharp-cutoff RF pentode designed for AM detection, voltage amplification, and FM limiting below 30 MHz.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 7AZ
Socket code: -
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

7AZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1SH	A	SH — Internal Shield Source EIA label SH; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN21G1	A	G1 — Control Grid Source EIA label 1G1; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN31G3	A	G3 — Suppressor GridGroup 7AZ3 Source EIA label 1G3; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN3K	A	K — CathodeGroup 7AZ3 Source EIA label K; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN41G2	A	G2 — Screen Grid Source EIA label 1G2; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN52P	B	P — Plate (Anode) Source EIA label 2P; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN61P	A	P — Plate (Anode) Source EIA label 1P; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN7H	—	H — Heater Source EIA label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ
PIN8H	—	H — Heater Source EIA label H; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 128, 7AZ

Section ratings

2 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published promoted fields populated from printed headings; identical repeated sections compressed.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 700000 Ω
Transconductance: 0.0026 S
Max plate voltage: 300 V
Max screen voltage: 150 V
Max plate dissipation: 2.3 W
Max screen dissipation: 0.6 W
Rectifier max heater-cathode voltage: 90 V

Published promoted fields populated from printed headings; identical repeated sections compressed.

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 2

Pentode

Capacitance

Input capacitance
6.5 pF
Output capacitance
6 pF
Grid-plate capacitance
0.004 pF

Other

Plate voltage
250 V
ClassA; OperatingPoint1
Screen voltage
150 V
ClassA; OperatingPoint1
Grid voltage
-1 V
ClassA; OperatingPoint1
Plate current
7.5 mA
ClassA; OperatingPoint1
Screen current
2.8 mA
ClassA; OperatingPoint1
Plate voltage
100 V
ClassA; OperatingPoint2
Screen voltage
100 V
ClassA; OperatingPoint2
Grid voltage
-1 V
ClassA; OperatingPoint2
Plate current
3.7 mA
ClassA; OperatingPoint2
Screen current
1.4 mA
ClassA; OperatingPoint2

Characteristics

Plate resistance
1500000 ohm
ClassA; OperatingPoint1
Transconductance
3600 uS
ClassA; OperatingPoint1
Plate resistance
700000 ohm
ClassA; OperatingPoint2
Transconductance
2600 uS
ClassA; OperatingPoint2

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

MaximumDiodeCurrent
3 mA
Section1

SECTION 2

Pentode

Capacitance

Grid To Plate Capacitance
0.004 pF
Section2;Maximum
Input Capacitance
6.5 pF
Section2
Output Capacitance
6 pF
Section2