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Nuvistor Tubes (all numbers) ·Triode

8808

Power transmitting triode for RF, audio, control, and industrial service, with published operating conditions and construction data.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 340 mA

Description

Power or transmitting triode for RF, audio, control, or industrial service. The supplied datasheet was reviewed for heater/filament data, maximum ratings, characteristics, typical operating conditions, capacitances, and construction details.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
340 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
6400 Ω
Transconductance
0.018 S
Amplification factor
100
Max plate voltage
1000 V
Max plate dissipation
6 W
Max cathode current
1 A

Published promoted values applied where semantically applicable; additional source-table values retained in TUBE_SECTION_PARAMETER.

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

1971 RCA HB3 Binder 3 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater Voltage, do or ac

    6.3 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Current at Eh = 6.3 V — published value 1

    6.3 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Current at Eh = 6.3 V — published value 2

    340 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater to cathode

    2.6 pF

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate to cathode

    0.05 pF

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Amplification Factor

    100

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Resistance (Approx.)

    6400

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Transconductance

    18000

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Current

    15 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Supply Voltage

    200 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid Supply Voltage

    0 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Above 50,000 feet.... See Breakdown-Voltage Ch¢racteristics — published value 1

    50 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Above 50,000 feet.... See Breakdown-Voltage Ch¢racteristics — published value 2

    0 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate Voltage

    1000 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage, do or ac — published value 1

    5.7 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage, do or ac — published value 2

    6.9 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Peak Cathode Current

    1000 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Cathode Current

    75 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Dissipation

    6

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Grid Dissipation

    200

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • bias operation

    50

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Frequency

    1

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage

    6.3 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate-to-Grid Voltage

    206 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Cathode-to-Grid Voltage

    5.8 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • From grid resistor of

    300

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Grid Current

    19 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Useful Power Output(Approx.)

    5

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Output Frequency

    1.2

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Heater Voltage

    6.3 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate-to-Grid Voltage

    200 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Cathode-to-Grid Voltage

    11 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • From grid resistor of

    1000

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Plate Current

    38 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Grid Current

    10.5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Useful Power Output(Approx.)

    2

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Output Frequency — published value 1

    1

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Output Frequency — published value 2

    1

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate-to-Grid Voltage — published value 1

    500 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Plate-to-Grid Voltage — published value 2

    1000 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Cathode-to-Grid Voltage — published value 1

    16 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • DC Cathode-to-Grid Voltage — published value 2

    20 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Plate Current — published value 1

    9 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Plate Current — published value 2

    4.75 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Grid Current — published value 1

    5.5 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Grid Current — published value 2

    1.4 mA

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Power Output — published value 1

    2.5

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Average Power Output — published value 2

    2.4

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Dissipation (Approx.) — published value 1

    2.4

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Plate Dissipation (Approx.) — published value 2

    2.7

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • As defined in the current issue of EIA Standard RS-239

    239

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • of plate dissipation and a chassis temperature of 25°C

    25

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 2 -Cathode — published value 1

    2

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 2 -Cathode — published value 2

    10

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 3* - Do Not Use — published value 1

    3

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 3* - Do Not Use — published value 2

    12

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • Pin 4 , -Cathode

    4

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • The peak cathode current is for a duty factor of up to 1% or

    1

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • CATHODE VOLTAGE IEyI-V — published value 1

    92 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.

  • CATHODE VOLTAGE IEyI-V — published value 2

    14339 V

    Published datasheet value; multiple numbers on a source row represent separate limits or operating conditions.