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Power - Triode Single (under 10W) ·Triode

2C40

Lighthouse-style power triode for UHF and microwave oscillator and amplifier service. Its compact low-inductance electrode geometry supports operation well into the gigahertz region, with published oscillator performance extending to roughly 3.4 GHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 900 mA

Description

The RCA 2C40 is a lighthouse rf triode. The supplied source provides transmitting, RF, or rectifier ratings appropriate to this device.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
900 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
4850 Ω
Transconductance
0.00485 S
Amplification factor
36
Max plate voltage
500 V
Max plate dissipation
6.5 W

Published ratings and characteristics promoted where unambiguous; additional source values preserved 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

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum operating frequency

    3370 MHz

  • Power output typical

    75 mW

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • bis zu Frequenzen von etwa

    3.3 GHz

    bis zu Frequenzen von etwa 3,3 GHz.

Other

  • 17

    700 mA

    17 0,7 A

  • r 2

    1 min

    r 2 1 min

  • f

    2.4 GHz

    f 2,4 GHz

  • Fassung: 8

    17 A

    Fassung: 8-17 A TGL 14896

  • U, MAaX,

    500 V

    U, MAaX, 500 V

  • Ia maX,

    25 mA

    Ia maX,. 25 mA

  • P max

    6.5 W

    P max. 6,5 W

  • PublishedValue

    40 V

    40 V/ €ö A

Data set 03

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum Plate/Inverse Voltage

    500 V

    Source rating

  • Maximum Plate Dissipation

    6.5 W

Data set 04

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum RF amplifier frequency

    1200 MHz

  • Maximum CW oscillator frequency

    3370 MHz