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6EM5

High-dissipation beam-power tube designed for vertical-deflection amplifier service in 110-degree television receivers, with substantial pulse-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9HN
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 800 mA

Description

Beam power tube for vertical-deflection amplifier service in 110-degree television receivers. Explicit heater variant/co-designation of 8EM5 in the approved source.

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: 9HN
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 800 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9HN - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	—	G2 — Screen Grid Literal label G2; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN3Base Pin	—	G1 — Control Grid Literal label G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN4Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN5Base Pin	—	H — Heater Literal label H; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN6Base Pin	—	G1 — Control Grid Literal label G1; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN7Base Pin	—	G3 — Suppressor GridGroup 9HN7 Literal label G3; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN7Base Pin	—	K — CathodeGroup 9HN7 Literal label K; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN8Base Pin	—	IC Literal label IC; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN
PIN9Base Pin	—	P — Plate (Anode) Literal label P; manufacturer confirmation pending	Unverified EIA Base Connections printed p132, 9HN

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.0051 S
Amplification factor: 8.7
Max plate voltage: 315 V
Max screen voltage: 285 V
Max plate dissipation: 10 W
Max screen dissipation: 1.5 W
Max cathode current: 60 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

Beam Power

Characteristic

Heater Voltage. ......cooiiiiin i nnnnnn 6.3 8.4 Volts
8.4 V
Heater Voltage. ......cooiiiiin i nnnnnn 6.3 8.4 Volts
Heater Current. .. ......ccooiinininvnenns 800 600 Ma
600 mA
Heater Current. .. ......ccooiinininvnenns 800 600 Ma
Output: pto(h+k+4+024+g3). ..o, e 5.1 puf
5.1 pF
Output: pto(h+k+4+024+g3). ..o, e 5.1 puf
Plate Voltage. . . ... it 315 Volts
315 V
Plate Voltage. . . ... it 315 Volts
Grid No. 2 Voltage. . .. ... .. ittt inirnennnanns 285 Volts
285 V
Grid No. 2 Voltage. . .. ... .. ittt inirnennnanns 285 Volts
Peak Negative Pulse Grid Voltage...................... 250 Volts
250 V
Peak Negative Pulse Grid Voltage...................... 250 Volts
Plate Dissipation®. . ... ... . it 10.0 Watts
10 W
Plate Dissipation®. . ... ... . it 10.0 Watts
Grid No. 2 Dissipation3. .. ... ... ittt 1.5 Watts
1.5 W
Grid No. 2 Dissipation3. .. ... ... ittt 1.5 Watts
Average Cathode Current. .. ... ... ... ... ... ... ...... 60 Ma
60 mA
Average Cathode Current. .. ... ... ... ... ... ... ...... 60 Ma
Peak Cathode Current........... ... .coiiiiiiiiiinnn, 210 Ma
210 mA
Peak Cathode Current........... ... .coiiiiiiiiiinnn, 210 Ma
Plate Voltage. . ..., 250 Volts
250 V
Plate Voltage. . ..., 250 Volts
Grid No. 2 Voltage. . . ...ooiiniiin it iianenenn. 250 Volts
250 V
Grid No. 2 Voltage. . . ...ooiiniiin it iianenenn. 250 Volts
Plate Current. . ... . i i i i 35 Ma
35 mA
Plate Current. . ... . i i i i 35 Ma
Grid No. 2 Current. . ... .. . it et ineneanen 3.0 Ma
3 mA
Grid No. 2 Current. . ... .. . it et ineneanen 3.0 Ma

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

PeakPositivePlateVoltage
6000 V
HorizontalDeflection

Characteristic

Heater Warmup Time
11 s

Data set 03

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak positive pulse plate voltage
2200 V
VerticalDeflection
Peak cathode current
210 mA
VerticalDeflection
Plate voltage
250 V
ClassA1;VerticalDeflection
Grid 2 voltage
250 V
ClassA1;VerticalDeflection
Plate current
40 mA
ClassA1;VerticalDeflection
Grid 2 current
3 mA
ClassA1;VerticalDeflection

Data set 04

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater voltage
6.3 V
Heater current
800 mA
Maximum plate voltage
315 V
VerticalDeflection
Peak positive pulse plate voltage
2200 V
VerticalDeflection
Maximum screen voltage
285 V
VerticalDeflection
Peak cathode current
210 mA
VerticalDeflection
Average cathode current
60 mA
VerticalDeflection
Screen input
1.5 W
Plate dissipation
10 W

Characteristic

Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Grid voltage
-18 V
ClassA
Plate resistance
50000 ohm
ClassA
Transconductance
5100 uS
ClassA
Plate current
40 mA
ClassA
Screen current
3 mA
ClassA
Grid-to-screen mu factor
8.7

Capacitance

Grid-to-plate capacitance
0.7 pF
Input capacitance
10 pF
Output capacitance
5.1 pF

Data set 05

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak value -
200 V
Other;PublishedValue1
Peak value -
200 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Peak Positive-Pulse Plate Voltage# (Absolute Maximum)
220 V
MaximumRating;PublishedValue1
Peak Positive-Pulse Plate Voltage# (Absolute Maximum)
4 V
MaximumRating;PublishedValue2
Grid-No
2 V
MaximumRating;PublishedValue1
Grid-No
285 V
MaximumRating;PublishedValue2
Peak Negative-Pulse Grid-No.l (Control-Grid) Voltage
250 V
MaximumRating
Peak Cathode Current
210 mA
MaximumRating
Plate Dissipation
10 W
MaximumRating
Grid-No
2 W
MaximumRating;PublishedValue1
Grid-No
1.5 W
MaximumRating;PublishedValue2
Grid-No.l-Circuit Resistance
2.2 megohm
MaximumCircuitValue
Maximum Plate Voltage
315 V
Section1
Maximum Screen Voltage
285 V
Section1
Maximum Plate Dissipation
10 W
Section1
Maximum Screen Dissipation
1.5 W
Section1
Maximum Cathode Current
210 mA
Section1

Capacitance

Grid No.l to Plate
0.7 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
10 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
5.1 pF
Capacitance;PublishedValue3

Characteristic

Plate Voltage
60 V
Characteristic;PublishedValue1
Plate Voltage
250 V
Characteristic;PublishedValue2
Grid-No
2 V
Characteristic;PublishedValue1
Grid-No
250 V
Characteristic;PublishedValue2
Grid-No
250 V
Characteristic;PublishedValue3
Grid-No.l Voltage
0 V
Characteristic;PublishedValue1
Grid-No.l Voltage
-18 V
Characteristic;PublishedValue2
Plate Resistance
0.05 megohm
Characteristic
Plate Current
180 mA
Characteristic;PublishedValue1
Plate Current
40 mA
Characteristic;PublishedValue2
Grid-No
2 mA
Characteristic;PublishedValue1
Grid-No
30 mA
Characteristic;PublishedValue2
Grid-No.l Voltage (Approx.) for plate current of
0.2 mA
Characteristic;PublishedValue1
Grid-No.l Voltage (Approx.) for plate current of
-37 mA
Characteristic;PublishedValue2
Plate Resistance
50000 ohm
Section1
Transconductance
5100 uS
Section1