6EX6

Beam-power pentode designed for horizontal-deflection service in wide-angle television receivers, emphasizing high plate current at low electrode voltages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 5BT
Socket code: IO
Base pins: 5
Nominal heater: 6.3 V / 2.25 A

Description

The 6EX6 is a beam-power pentode for horizontal-deflection amplifier service in large-deflection-angle television receivers, emphasizing high plate current at low electrode voltages.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5BT
Socket code: IO
Base pins: 5
Nominal heater voltage: 6.3 V
Nominal heater current: 2.25 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5BT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen Source designation IS; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN2H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3G3	A	G3 — Suppressor GridGroup 5BT3 Source designation G3; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3K	A	K — CathodeGroup 5BT3 Source designation K; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN5G1	A	G1 — Control Grid Source designation G1; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN7H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN8G2	A	G2 — Screen Grid Source designation G2; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
CAP1P	A	P — Plate (Anode) Source designation P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 20000 Ω
Transconductance: 0.006 S
Max plate voltage: 700 V
Max screen voltage: 250 V
Max plate dissipation: 17.5 W
Max screen dissipation: 1.5 W
Max cathode current: 110 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............... ... ... ... ... 6.3 21.5 Volts
21.5 V
Heater Voltage............... ... ... ... ... 6.3 21.5 Volts
Heater Current. ....................... ... 2.25 0.6 Amperes
600 mA
Heater Current. ....................... ... 2.25 0.6 Amperes
Plate Voltage. . ... .. ... .. ... .. ... ... .. ... ... 175 Volts
175 V
Plate Voltage. . ... .. ... .. ... .. ... ... .. ... ... 175 Volts
Grid No. 2 Voltage. . ......... ... o, 175 Volts
175 V
Grid No. 2 Voltage. . ......... ... o, 175 Volts
Grid No. 1 Voltage. . ... .. ... i, -30 Volts
-30 V
Grid No. 1 Voltage. . ... .. ... i, -30 Volts
Plate Current. ... . . . e e 67 Ma
67 mA
Plate Current. ... . . . e e 67 Ma
Grid No. 2 Current. . ... .. .. ... . i 3.3 Ma
3.3 mA
Grid No. 2 Current. . ... .. .. ... . i 3.3 Ma
Transconductance. .. ... ... .. e 7700 umhos
7700 umhos
Transconductance. .. ... ... .. e 7700 umhos
Plate Resistance. ... ... .. i 8500 Ohms
8500 Ohms
Plate Resistance. ... ... .. i 8500 Ohms
No. 2 voltage, plus a high ratio of plate to Grid No. 2 current.
2 V
No. 2 voltage, plus a high ratio of plate to Grid No. 2 current.

Other

(Boost + D C Power Supply)................... 770 Volts Max.
770 V
(Boost + D C Power Supply)................... 770 Volts Max.
Peak Positive Plate Voltage (Abs. Max.). ........... 7000 Volts
7000 V
Peak Positive Plate Voltage (Abs. Max.). ........... 7000 Volts
Peak Negative Plate Voltage (Abs. Max.). .......... 1500 Volts
1500 V
Peak Negative Plate Voltage (Abs. Max.). .......... 1500 Volts
Grid No. 2 Voltage. .. ... .. .. ... . i, 195 Volts Max.
195 V
Grid No. 2 Voltage. .. ... .. .. ... . i, 195 Volts Max.
Peak Negative Grid No. 1 Voltage.. ................ 220 Volts Max.
220 V
Peak Negative Grid No. 1 Voltage.. ................ 220 Volts Max.
Plate Dissipation4. .. ... ... ... . . . ... . .. 22 Watts Max.
22 W
Plate Dissipation4. .. ... ... ... . . . ... . .. 22 Watts Max.
Grid No. 2 Dissipation. . ... ... .. ... ... ... ....... 3.5 Watts Max.
3.5 W
Grid No. 2 Dissipation. . ... ... .. ... ... ... ....... 3.5 Watts Max.
Average Cathode Current. ... ... ... ... ... ........ 220 Ma Max.
220 mA
Average Cathode Current. ... ... ... ... ... ........ 220 Ma Max.
Peak Cathode Current. .. ... ... ... ... ... ... ...... 770 Ma Max.
770 mA
Peak Cathode Current. .. ... ... ... ... ... ... ...... 770 Ma Max.
Grid No. 1 Circuit Resistance. ..................... 0.47 Megohm Max.
0.47 Megohm
Grid No. 1 Circuit Resistance. ..................... 0.47 Megohm Max.
5. Amplification factor with tube operating as a triode with 175 volts on the
175 V
5. Amplification factor with tube operating as a triode with 175 volts on the

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

PeakPositivePlateVoltage
6000 V
HorizontalDeflection

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

Maximum_DC_plate_supply_voltage
770 V
Maximum_peak_negative_plate_voltage
1500 V
Maximum_peak_cathode_current
770 mA
Plate_voltage
175 V
ClassA
Screen_voltage
175 V
ClassA
Grid_1_voltage
-30 V
ClassA

Capacitance

Grid-1-to-plate capacitance
1.1 pF
Input capacitance
22 pF
Output capacitance
8.5 pF