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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6AG5

Sharp-cutoff miniature pentode designed for compact RF or IF amplification to approximately 400 MHz. Its small size and high-frequency capability make it a versatile fixed-gain VHF signal tube.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: E7-1
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 300 mA

Description

Sharp-cutoff pentode for compact radio RF or IF amplification to 400 MHz.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: E7-1
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

E7-1 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 800000 Ω
Transconductance: 0.005 S
Max plate voltage: 300 V
Max screen voltage: 150 V
Max plate dissipation: 2 W
Max screen dissipation: 0.5 W
Max cathode current: 30 mA

Sharp-cutoff RF pentode; promoted values use the pentode connection.

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
250 V
ClassA;PentodeConnection
Screen-grid voltage
150 V
ClassA;PentodeConnection
Cathode resistor
180 ohm
ClassA;PentodeConnection
Plate current
6.5 mA
ClassA;PentodeConnection
Screen-grid current
2 mA
ClassA;PentodeConnection
Plate voltage
250 V
ClassA;TriodeConnection
Cathode resistor
820 ohm
ClassA;TriodeConnection
Plate current
5.5 mA
ClassA;TriodeConnection
Plate resistance
10000 ohm
ClassA;TriodeConnection
Transconductance
3800 uS
ClassA;TriodeConnection
Amplification factor
42
ClassA;TriodeConnection

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

MaximumUsefulFrequency
400 MHz
RFAmplifier

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
300 mA
Plate Voltage
250 V
Screen Voltage
150 V
Grid Voltage
-2 V
Plate Current
10.5 mA
Screen Current
4.2 mA
Transconductance
5000 uS
Plate Resistance
500000 ohm
GridToPlateCapacitanceMaximum
0.0035 pF
Input Capacitance
5.5 pF
Output Capacitance
5 pF

Data set 04

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterOrFilamentVoltageNominal
6.3 V
HeaterOrFilamentCurrentNominal
300 mA
Maximum Plate Voltage
300 V
Maximum Screen Voltage
150 V
Maximum Plate Dissipation
2 W
Maximum Screen Dissipation
0.5 W

Characteristic

Plate Resistance
800000 Ohm
Transconductance
5000 uS

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Grid No.l to Plate
0.03 pF
Capacitance
and Internal Shield
1.8 pF
Capacitance
Grid No.l to Plate and Grid No.2
2.5 pF
Capacitance
Grid No.l to Cathode, Heater, Grid No.3, and Internal Shield
3.6 pF
Capacitance
Grid No.2 to Cathode, Heater, Grid No.3, and Internal Shield
3 pF
Capacitance
Plate to Cathode, Heater, Grid No.3, and Internal Shield
3 pF
Capacitance

Other

Grid-No.2 (Screen-Grid)
300 V
MaximumRatings
Grid-No.I (Control-Grid)
0 V
MaximumRatings
Plate Dissipation
2.5 W
MaximumRatings;PublishedValue1
Plate Dissipation
2 W
MaximumRatings;PublishedValue2
For grid-No. 2 voltages up to 150 volts
0.5 V
MaximumRatings

Characteristic

Plate Supply Voltage
180 V
Characteristics;PublishedValue1
Plate Supply Voltage
250 V
Characteristics;PublishedValue2
Plate Supply Voltage
100 V
Characteristics;PublishedValue3
Plate Supply Voltage
125 V
Characteristics;PublishedValue4
Plate Supply Voltage
250 V
Characteristics;PublishedValue5
Grid-No.2 Supply Voltage
100 V
Characteristics;PublishedValue1
Grid-No.2 Supply Voltage
125 V
Characteristics;PublishedValue2
Grid-No.2 Supply Voltage
150 V
Characteristics;PublishedValue3
Cathode-Bias Resistor
330 ohm
Characteristics;PublishedValue1
Cathode-Bias Resistor
820 ohm
Characteristics;PublishedValue2
Cathode-Bias Resistor
180 ohm
Characteristics;PublishedValue3
Cathode-Bias Resistor
100 ohm
Characteristics;PublishedValue4
Cathode-Bias Resistor
180 ohm
Characteristics;PublishedValue5
Plate Resistance (Approx.)
0.008 megohm
Characteristics;PublishedValue1
Plate Resistance (Approx.)
0.01 megohm
Characteristics;PublishedValue2
Plate Resistance (Approx.)
0.6 megohm
Characteristics;PublishedValue3
Plate Resistance (Approx.)
0.5 megohm
Characteristics;PublishedValue4
Plate Resistance (Approx.)
0.8 megohm
Characteristics;PublishedValue5
Plate Current
7 mA
Characteristics;PublishedValue1
Plate Current
5.5 mA
Characteristics;PublishedValue2
Plate Current
4.5 mA
Characteristics;PublishedValue3
Plate Current
7.2 mA
Characteristics;PublishedValue4
Plate Current
6.5 mA
Characteristics;PublishedValue5
Grid-No.2 Current
1.4 mA
Characteristics;PublishedValue1
Grid-No.2 Current
2.1 mA
Characteristics;PublishedValue2
Grid-No.2 Current
2 mA
Characteristics;PublishedValue3