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Voltage - Triode (single high frequency) ·Triode

EC900

High-frequency triode for UHF amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 180 mA

Description

High-slope VHF neutrode triode intended for television and other VHF amplifier 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
180 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
Transconductance
0.0145 S
Max plate voltage
200 V
Max plate dissipation
2.2 W
Max cathode current
20 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    180 mA

    Published nominal value

  • Transconductance

    14500 µS

    Published nominal or operating characteristic

Other

  • Maximum plate dissipation

    2.2 W

    Published maximum rating

Capacitance

  • Input capacitance

    4.5 pF

    With external shielding

  • Output capacitance

    3 pF

    With external shielding