Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Service
FM tuner
Voltage - Triple Triode ·Triode-Triode-Triode
6EZ8
High-mu triple triode intended primarily for FM tuner circuitry.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- 9KA
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
The 6EZ8 is a high-mu triple triode in nine-pin miniature construction, designed primarily for FM tuner service.
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
- 9KA
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9KA - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Base Pin | C | K — Cathode Original label 3K; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN2Base Pin | C | G1 — Control Grid Original label 3G1; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN3Base Pin | C | P — Plate (Anode) Original label 3P; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN4Base Pin | A | K — CathodeGroup 9KA4 Original label 1K; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN4Base Pin | B | K — CathodeGroup 9KA4 Original label 2K; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN4Base Pin | — | H — HeaterGroup 9KA4 Original label H; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN5Base Pin | — | H — Heater Original label H; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN6Base Pin | B | P — Plate (Anode) Original label 2P; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN7Base Pin | B | G1 — Control Grid Original label 2G1; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN8Base Pin | A | P — Plate (Anode) Original label 1P; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
| PIN9Base Pin | A | G1 — Control Grid Original label 1G1; manufacturer verification pending | Unverified EIA Base Connections printed p133, 9KA |
Section ratings
3 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 13600 Ω
- Transconductance
- 0.0042 S
- Amplification factor
- 57
- Max plate voltage
- 330 V
- Max plate dissipation
- 2 W
Representative row for three sections with shared published average characteristics; each-plate dissipation 2 W, total all plates 5 W.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 13600 Ω
- Transconductance
- 0.0042 S
- Amplification factor
- 57
- Max plate voltage
- 330 V
- Max plate dissipation
- 2 W
Physical triode restored.
Section 3
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 13600 Ω
- Transconductance
- 0.0042 S
- Amplification factor
- 57
- Max plate voltage
- 330 V
- Max plate dissipation
- 2 W
Third physical triode restored.
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 02
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum_total_plate_dissipation_all_plates
5 W
Plate_voltage
125 V
Section1,Section2,Section3,ClassA
Grid_voltage
-1 V
Section1,Section2,Section3,ClassA
Characteristic
Plate_current
4.2 mA
Section1,Section2,Section3,ClassA
Data set 03
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Total Plate Dissipation All Plates
5 W
AllSections
Characteristic
Plate Voltage
125 V
EachSection
Grid Voltage
-1 V
EachSection
Plate Current
4.2 mA
EachSection
Data set 04
1971 RCA HB3 Binder 4 of 7
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
125 V
ClassA
Plate current
4.2 mA
ClassA
Maximum plate voltage
330 V
PLATE VOLTAGE
330 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Negative—bias value
50 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Positive—bias value
0 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
PLATE DISSIPATION
2 mA
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
TOTAL PLATE DISSIPATION (ALL PLATES)
5 mA
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Heater negative with respect to cathode
100 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Heater positive with respect to cathode
100 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Characteristics
Plate resistance
13600 ohm
ClassA
Transconductance
4200 uS
ClassA
Voltage (AC or DC) — published value 1
6 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Voltage (AC or DC) — published value 2
3 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Voltage (AC or DC) — published value 3
10 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Current at 6.3 volts — published value 1
6.3 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Current at 6.3 volts — published value 2
0.45 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid to plate (Each Unit) — published value 1
1.5
EachUnit
Grid to plate (Each Unit) — published value 2
1.5
EachUnit
unit No.2, and heater — published value 1
2.4
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
unit No.2, and heater — published value 2
2.6
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of unit No.3 and heater — published value 1
2.4
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of unit No.3 and heater — published value 2
2.6
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
unit No.2, and heater — published value 1
0.21
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
unit No.2, and heater — published value 2
1.4
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
unit No.l, and heater — published value 1
0.4
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
unit No.l, and heater — published value 2
1.2
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of unit No.3 and heater — published value 1
0.36
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of unit No.3 and heater — published value 2
1.2
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Plate Voltage
125 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid Voltage
-1 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Plate Resistance (Approx )
13600 ohm
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Transconductance
4200
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Plate Current
4.2 mA
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid Voltage (Approx.) for plate µa = 20 — published value 1
20 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid Voltage (Approx.) for plate µa = 20 — published value 2
-4 V
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Pin 1 —Cathode of — published value 1
1
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Pin 1 —Cathode of — published value 2
5
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Unit No.3
6
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Pin 2 —Grid of
2
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Unit No.3
7
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Pin 3— Plate of
3
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Unit No.3
8
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Pin 4 —Cathode of
4
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Unit No.2,
9
Published datasheet value; multiple numbers on one source row represent separate limits or operating conditions.