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Nuvistor Tubes (all numbers) ·Triode

8441

Triode for RF, audio, control, or industrial electronic service; source data do not support a narrower parent category confidently.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
8.5 V / 950 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.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
8.5 V
Nominal heater current
950 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
6800 Ω
Transconductance
0.0094 S
Max plate voltage
250 V
Max plate dissipation
0.2 W
Max cathode current
15 mA

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 between 6.0 and 8.5 volts to meet specific — published value 1

    6 V

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

  • heater voltage between 6.0 and 8.5 volts to meet specific — published value 2

    8.5 V

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

  • Grid to plate

    0.9 pF

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

  • and heater

    4.2 pF

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

  • and heater

    1.7 pF

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

  • Plate to cathode

    0.22 pF

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

  • Heater to cathode

    1.3 pF

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

  • Plate Supply Voltage

    110 V

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

  • Plate Resistance (Approx.)

    6800 ohm

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

  • Transconductance

    9400

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

  • Plate Current

    7 mA

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

  • Grid Voltage (Approx.) for plate µa = 10 — published value 1

    10 V

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

  • Grid Voltage (Approx.) for plate µa = 10 — published value 2

    -4 V

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

  • Pin 2 —Plate

    2

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

  • Pin 4 —Grid

    4

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

  • Pin 10 —Heater

    10

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

  • Pin 12 —Heater

    12

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

  • Heater Current — published value 1

    1

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

  • Heater Current — published value 2

    0.95

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

  • Grid to plate — published value 1

    2

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

  • Grid to plate — published value 2

    0.8

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

  • Grid to plate — published value 3

    1

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

  • shel l , and heater — published value 1

    2 pF

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

  • shel l , and heater — published value 2

    3.4 pF

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

  • shel l , and heater — published value 3

    5 pF

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

  • shell , and heater — published value 1

    2 pF

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

  • shell , and heater — published value 2

    1.3 pF

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

  • shell , and heater — published value 3

    2.1 pF

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

  • Plate to cathode — published value 1

    2 pF

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

  • Plate to cathode — published value 2

    0.16 pF

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

  • Plate to cathode — published value 3

    0.28 pF

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

  • Heater to cathode — published value 1

    2 pF

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

  • Heater to cathode — published value 2

    1 pF

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

  • Heater to cathode — published value 3

    1.6 pF

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

  • Plate Current (1) — published value 1

    1 mA

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

  • Plate Current (1) — published value 2

    13 mA

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

  • Plate Current (1) — published value 3

    5.5 mA

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

  • Plate Current (1) — published value 4

    8.8 mA

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

  • Plate Current (2) — published value 1

    2

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

  • Plate Current (2) — published value 2

    1

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

  • Plate Current (2) — published value 3

    4

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

  • Plate Current (2) — published value 4

    50

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

  • Transconductance (1) — published value 1

    1

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

  • Transconductance (1) — published value 2

    13

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

  • Transconductance (1) — published value 3

    7900

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

  • Transconductance (1) — published value 4

    10900

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

  • Transconductance (2) — published value 1

    2

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

  • Transconductance (2) — published value 2

    35

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

  • Transconductance (2) — published value 3

    6700

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

  • Reverse Grid Current — published value 1

    16

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

  • Reverse Grid Current — published value 2

    0.05

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

  • Note 1: with do heater volts = .specified center value, Ef(ct r)

    1 V

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

  • Note 3: With do plate supply volts= 110, grid and metal shell con ected — published value 1

    3 V

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

  • Note 3: With do plate supply volts= 110, grid and metal shell con ected — published value 2

    110 V

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

  • = 150, and cathode-Dyp ass capacitor (µf) = 1000 — published value 1

    150

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

  • = 150, and cathode-Dyp ass capacitor (µf) = 1000 — published value 2

    1000

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

  • Note u: With do plate volts = 110, do grid volts = -5, antl metal shell — published value 1

    110 V

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

  • Note u: With do plate volts = 110, do grid volts = -5, antl metal shell — published value 2

    -5 V

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

  • Note 5: With do heater volts = 0.9 specified center value — published value 1

    5 V

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

  • Note 5: With do heater volts = 0.9 specified center value — published value 2

    0.9 V

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

  • Note 6: With do plate supply volts = 150 Oc grid supply volts = -1. 7, — published value 1

    6 V

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

  • Note 6: With do plate supply volts = 150 Oc grid supply volts = -1. 7, — published value 2

    150 V

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

  • Note 6: With do plate supply volts = 150 Oc grid supply volts = -1. 7, — published value 3

    -1 V

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

  • Note 6: With do plate supply volts = 150 Oc grid supply volts = -1. 7, — published value 4

    7 V

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

  • grid-circuit resistance (megohms) L 1 (the internal resistance

    1 Mohm

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

  • Note 7: With do heater-cathode volts = 100 — published value 1

    7 V

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

  • Note 7: With do heater-cathode volts = 100 — published value 2

    100 V

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

  • Note 8: With grid 100 volts negative with respect to all other electrodes — published value 1

    8 V

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

  • Note 8: With grid 100 volts negative with respect to all other electrodes — published value 2

    100 V

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

  • Note 9: With plate 300 volts negative with respect to all other electrodes — published value 1

    9 V

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

  • Note 9: With plate 300 volts negative with respect to all other electrodes — published value 2

    300 V

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

  • voltages appl ied, are subjected to 20 blows 15 in each position! — published value 1

    20 V

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

  • voltages appl ied, are subjected to 20 blows 15 in each position! — published value 2

    15 V

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

  • frequency range from 5to 500 cps and back to 5 cps. One such — published value 1

    5

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

  • frequency range from 5to 500 cps and back to 5 cps. One such — published value 2

    500

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

  • frequency range from 5to 500 cps and back to 5 cps. One such — published value 3

    5

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

  • ity and Shorts, Transconductance 1 1 1, Reverse Grid Current, and — published value 1

    1

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

  • ity and Shorts, Transconductance 1 1 1, Reverse Grid Current, and — published value 2

    1

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

  • ity and Shorts, Transconductance 1 1 1, Reverse Grid Current, and — published value 3

    1

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

  • plate dissipation (Rating 2 —0.2 watt) — published value 1

    2 W

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

  • plate dissipation (Rating 2 —0.2 watt) — published value 2

    0.2 W

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

  • Heater-Cycling Life (100 Hours)

    100

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

  • production run with heater volts = 1 .35x specified center

    1 V

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

  • value cycled 1 minute ON and 2 minutes OFF, do heater—cathode — published value 1

    1

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

  • value cycled 1 minute ON and 2 minutes OFF, do heater—cathode — published value 2

    2

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

  • dissipation (Rating x — I watt 1

    1 W

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

  • conductance 1 1 1, Reverse Grid Current, Inoperatives, and — published value 1

    1

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

  • conductance 1 1 1, Reverse Grid Current, Inoperatives, and — published value 2

    1

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

  • conductance 1 1 1, Reverse Grid Current, Inoperatives, and — published value 3

    1

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

Other

  • Plate Supply Voltage — published value 1

    300 V

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

  • Plate Supply Voltage — published value 2

    300 V

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

  • Plate Voltage — published value 1

    250 V

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

  • Plate Voltage — published value 2

    250 V

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

  • Negative—bias value — published value 1

    55 V

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

  • Negative—bias value — published value 2

    55 V

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

  • Positive—bias value

    0 V

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

  • Cathode Current — published value 1

    15 mA

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

  • Cathode Current — published value 2

    2.5 mA

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

  • Plate Dissipation — published value 1

    1 mA

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

  • Plate Dissipation — published value 2

    0.2 mA

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