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2C46

Indirectly heated disk-seal UHF oscillator triode for 1000–1200 MHz cavity service; μ 60, gm 3.5 mS.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 6
Nominal heater: 6.3 V / 750 mA

Description

The General Electric 2C46 is an indirectly heated disk-seal UHF triode intended for stable cavity local-oscillator service at approximately 1000–1200 MHz. Heater: 6.3 V, 0.75 A. Amplification factor 60, transconductance 3500 µmhos at 14 mA plate current. Maximum plate voltage 500 V, plate dissipation 12 W and DC plate current 40 mA. Typical CW oscillator: 150 V plate, 8 mA plate current, 1.18 W dissipation, about 20 mW RF output. Maximum seal temperature 200 °C.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 6
Nominal heater voltage: 6.3 V
Nominal heater current: 750 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: 17142.85714285714 Ω
Transconductance: 0.0035 S
Amplification factor: 60
Max plate voltage: 500 V
Max plate dissipation: 12 W

GE/RMA maximum DC plate current 40 mA (not specified as maximum cathode current). Published gm 3500 µmhos at Ib=14 mA, mu 60; promoted rp=mu/gm=17142.86 ohms is calculated, not separately specified. Typical CW: plate 150 V, 8 mA, dissipation 1.18 W, RF output ~20 mW. Maximum seal temperature 200 °C; interelectrode capacitances and RF cathode connection specified.

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 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterOrFilamentVoltageNominal
6.3 V
HeaterOrFilamentCurrentNominal
750 mA
MaxPlateVoltage
500 V

Characteristic

Maximum plate current
40 mA
Maximum DC plate current
Amplification Factor
60
Average amplification factor
Transconductance
3500 µmho
Grid-plate transconductance at DC plate current 14 mA
Grid-to-plate capacitance
1.7 pF
Direct grid-plate capacitance
Grid-to-cathode capacitance
2.2 pF
Direct grid-cathode capacitance
Plate-to-cathode capacitance
0.025 pF
Maximum plate-cathode capacitance
Seal Temperature
200 °C
Maximum seal temperature
Power Output
20 mW
Approximate CW oscillator RF output power
Frequency
1100 MHz
Typical CW oscillator frequency; datasheet maximum rating 1300 MHz