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Nuvistor Tubes (all numbers) ·Triode

8627

Ceramic-metal power triode for Class A, RF oscillator, amplifier, and frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 150 mA

Description

Ceramic-metal power triode for Class A, RF oscillator, amplifier, and frequency-multiplier 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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
150 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
5400 Ω
Transconductance
0.013 S
Amplification factor
70
Max plate voltage
300 V
Max plate dissipation
2.7 W
Max cathode current
30 mA

Higher-current published Class-A characteristic set promoted.

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 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    150 mA

  • Plate supply voltage

    110 V

    HigherCurrentSet

  • Maximum plate voltage

    300 V

  • Maximum average cathode current

    30 mA

  • Plate dissipation

    2.7 W

  • Useful power output

    1.25 W

    RFOscillator

Characteristic

  • Amplification factor

    70

    HigherCurrentSet

  • Plate resistance

    5400 ohm

    HigherCurrentSet

  • Transconductance

    13000 uS

    HigherCurrentSet

  • Plate current

    11.5 mA

    HigherCurrentSet

Capacitance

  • Input capacitance

    6 pF

  • Output capacitance

    1.2 pF