Alternatives & variations Download PDF datasheet

Power - Pentode Single (NOT beam) (under 10W) ·Pentode

6EH5

Power pentode designed for the audio-output stage of television receivers. Its compact construction provides low-frequency output power for driving the receiver loudspeaker.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 7CV
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 1.2 A

Description

Power pentode used in the audio output stage of television receivers. It is an explicit heater variant/co-designation in 25EH5.pdf.

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: 7CV
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 1.2 A
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

Plate resistance: 11000 Ω
Transconductance: 0.0146 S
Max plate voltage: 150 V
Max screen voltage: 130 V
Max plate dissipation: 5.5 W
Max screen dissipation: 2 W
Max cathode current: 65 mA
Rectifier max heater-cathode voltage: 200 V
Rectifier warm-up time: 11 s

Published promoted fields populated from the printed semantic headings.

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

Heater Voltage. ................ 6.3 12.6 25 50 Volts
50 V
Heater Voltage. ................ 6.3 12.6 25 50 Volts
Heater Current. ... 1200 600 300 150 Ma
150 mA
Heater Current. ... 1200 600 300 150 Ma
Plate Voltage. .. ...... ... .. .. ... .. ... 135 Volts
135 V
Plate Voltage. .. ...... ... .. .. ... .. ... 135 Volts
Grid No. 2 Voltage. . .. ... ... ... .. ... .. . ... ....... 117 Volts
117 V
Grid No. 2 Voltage. . .. ... ... ... .. ... .. . ... ....... 117 Volts
Grid No. 1 Voltage. . . .. .. ... . .. ... ... .......... 0 Volts
0 V
Grid No. 1 Voltage. . . .. .. ... . .. ... ... .......... 0 Volts
Plate Dissipation. .. ....... ... ... ... ... ... ... ... 5 Watts
5 W
Plate Dissipation. .. ....... ... ... ... ... ... ... ... 5 Watts
Grid No. 2 Dissipation. . ............ .. ... ... ........ 1.75 Watts
1.75 W
Grid No. 2 Dissipation. . ............ .. ... ... ........ 1.75 Watts
Grid No. 2 Voltage. . .. ... ... .. . . 115 Voits
2 V
Grid No. 2 Voltage. . .. ... ... .. . . 115 Voits
Peak AF Grid No. 1 Voltage. .......................... 3 Volts
3 V
Peak AF Grid No. 1 Voltage. .......................... 3 Volts
Zero-Signal Plate Current. . ... ... ... ... ............. 42 Ma
42 mA
Zero-Signal Plate Current. . ... ... ... ... ............. 42 Ma
Zero Signal Grid No. 2 Current. 11.5 Ma
11.5 mA
Zero Signal Grid No. 2 Current. 11.5 Ma
Transconductance. . ... ............. .. ... 14,600 umhos
14.6 umhos
Transconductance. . ... ............. .. ... 14,600 umhos
Plate Resistance (approx.). . ...........couireininon.. 11,000 Ohms
11 Ohms
Plate Resistance (approx.). . ...........couireininon.. 11,000 Ohms
Load Resistance. . ... ... ...... . ... . ... ... ... ... ... ... 3000 Ohms
3000 Ohms
Load Resistance. . ... ... ...... . ... . ... ... ... ... ... ... 3000 Ohms

Other

Maximum Signai Plate Current. .. .. ... ................ 42 Ma
42 mA
Maximum Signai Plate Current. .. .. ... ................ 42 Ma
Maximum Signal Grid No. 2 Current. 14.5 Ma
14.5 mA
Maximum Signal Grid No. 2 Current. 14.5 Ma
Maximum Signal Power Output. . ....... e 1.4 Watts
1.4 W
Maximum Signal Power Output. . ....... e 1.4 Watts

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Typical plate voltage
110 V
ClassA
Typical screen voltage
115 V
ClassA
Zero-signal screen current
11.5 mA
ClassA
Maximum-signal screen current
14.5 mA
ClassA
Power output
1.4 W
ClassA

Characteristics

Transconductance
14600 uS

Application

Application
Audio output amplifier

Data set 03

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate supply voltage
110 V
ClassA1;AudioOutput
Grid 2 supply voltage
115 V
ClassA1;AudioOutput
Plate current
42 mA
ClassA1;AudioOutput
Grid 2 current
11.5 mA
ClassA1;AudioOutput
Load resistance
3000 ohm
ClassA1;AudioOutput
Signal power output
1.4 W
ClassA1;AudioOutput

Data set 04

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Heater-Cathode Voltage
1.2 A
Other;PublishedValue1
Heater-Cathode Voltage
300 mA
Other;PublishedValue2
Heater-Cathode Voltage
150 mA
Other;PublishedValue3
Peak value
200 V
Other;PublishedValue1
Peak value
200 V
Other;PublishedValue2
Peak value
200 V
Other;PublishedValue3
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue3
Plate Voltage
150 V
MaximumRating
Grid-No
2 V
MaximumRating;PublishedValue1
Grid-No
130 V
MaximumRating;PublishedValue2
Plate Dissipation
5.5 W
MaximumRating
Grid-No
2 W
MaximumRating;PublishedValue1
Grid-No
2 W
MaximumRating;PublishedValue2
Plate Supply Voltage
110 V
TypicalOperation
Grid-No
2 V
TypicalOperation;PublishedValue1
Grid-No
115 V
TypicalOperation;PublishedValue2
Cathode-Bias Resistor
62 ohm
TypicalOperation
Peak AF Grid-No
1 V
TypicalOperation
Zero-Signal Plate Current
42 mA
TypicalOperation
Maximum-Signal Plate Current
42 mA
TypicalOperation
Zero-Signal Grid-No
2 mA
TypicalOperation;PublishedValue1
Zero-Signal Grid-No
11.5 mA
TypicalOperation;PublishedValue2
Maximum-Signal Grid-No
2 mA
TypicalOperation;PublishedValue1
Maximum-Signal Grid-No
14.5 mA
TypicalOperation;PublishedValue2
Plate Resistance (Apnrox.)
11000 ohm
TypicalOperation
Transconductance
14600 uS
TypicalOperation
Load Resistance
3000 ohm
TypicalOperation
TotalHarmonic Distortion
7 %
TypicalOperation
Maximum-Signal Power Output
1.4 W
TypicalOperation
For fixed-bias operation
0.1 megohm
TypicalOperation
For cathode-bias operation
0.5 megohm
TypicalOperation
PJate Supply Voltage
140 V
TypicalOperation
Grid-No
2 V
TypicalOperation;PublishedValue1
Grid-No
120 V
TypicalOperation;PublishedValue2
Cathode-Bias Resistor
68 ohm
TypicalOperation
Peak AF Grid-No.l Voltage
9.4 V
TypicalOperation
Zero-Signal Plate Current
47 mA
TypicalOperation
Maximum-Signal Plate Current
51 mA
TypicalOperation
Zero-Signal Grid-No
2 mA
TypicalOperation;PublishedValue1
Zero-Signal Grid-No
11 mA
TypicalOperation;PublishedValue2
Maximum-Signal Grid-No
2 mA
TypicalOperation;PublishedValue1
Maximum-Signal Grid-No
17.7 mA
TypicalOperation;PublishedValue2
Effective Load Resistance (Plate-to-plate)
6000 ohm
TypicalOperation
Total Harmonic Distortion
5 %
TypicalOperation
Maximum-Signal Power Output
3.8 W
TypicalOperation
For fixed-bias operation
0.1 megohm
MaximumCircuitValue
Maximum Plate Voltage
110 V
Section1;Promoted
Maximum Screen Voltage
130 V
Section1;Promoted
Maximum Plate Dissipation
5.5 W
Section1;Promoted
Maximum Screen Dissipation
2 W
Section1;Promoted

Capacitance

Grid No.l to Plate
0.65 pF
Capacitance
Grid No.l to Cathode, Heater. Grid No
2 pF
Capacitance;PublishedValue1
Grid No.l to Cathode, Heater. Grid No
3 pF
Capacitance;PublishedValue2
Grid No.l to Cathode, Heater. Grid No
17 pF
Capacitance;PublishedValue3
Plate to Cathode. Heater, Grid No
2 pF
Capacitance;PublishedValue1
Plate to Cathode. Heater, Grid No
3 pF
Capacitance;PublishedValue2
Plate to Cathode. Heater, Grid No
9 pF
Capacitance;PublishedValue3

Characteristic

Plate Resistance
11000 ohm
Section1;Promoted
Transconductance
14600 uS
Section1;Promoted