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Power - Triode (over 1000V 100W) ·Triode

3C350E

Heavy-filament directly heated RF transmitting triode for substantial radio-frequency power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
10 V / 9.75 A

Description

RF transmitting triode.

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
10 V
Nominal heater current
9.75 A
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
12800 Ω
Transconductance
0.00125 S
Amplification factor
16
Max plate voltage
3000 V
Max plate dissipation
350 W
Max cathode current
375 mA

Values transcribed from the approved datasheet; additional published data retained as parameters.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Grid to anode

    21 pF

    Published direct interelectrode capacitance

  • Grid to filament

    8 pF

    Published direct interelectrode capacitance

  • Anode to filament

    2 pF

    Published direct interelectrode capacitance

  • Heater/filament nominal current

    9.75 A

    Nominal published value

Data set 02

1947 Standard Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum frequency at full rating

    7.5 MHz