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Voltage - Triode (single high frequency) ·Triode

6CR4

Grounded-grid UHF low-noise triode.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
9
Nominal heater
6.3 V / 370 mA

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
370 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 0

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.015 S
Amplification factor
60
Max plate voltage
250 V
Max plate dissipation
2.8 W

Grounded-grid UHF triode; typical Va 130 V, Ia 16 mA.

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

9999 Mixed F 1000

Published operating points and test conditions from this source.

SECTION 0

Triode

Characteristic

  • Plate Voltage

    130 V

    Typical grounded-grid UHF triode anode voltage

Other

  • Heater/filament voltage

    6.3 V

    Heater voltage

  • Heater/filament current

    370 mA

    Heater current