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Power - Triode Single (under 10W) ·Triode

CA

Directly heated triode with a 3.65 V filament and approximately 5 W maximum anode dissipation, documented in RFT technical literature.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
5
Nominal heater
3.65 V / 1.1 A

Description

A directly heated triode with a 3.65 V, 1.1 A filament, 20 mA operating anode current and 5 W maximum anode dissipation.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
5
Nominal heater voltage
3.65 V
Nominal heater current
1.1 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
4100 Ω
Transconductance
0.00165 S
Amplification factor
6.85
Max plate voltage
230 V
Max plate dissipation
5 W

Published ratings and characteristics promoted from the approved source.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Anode voltage

    220 V

  • Grid bias

    -12 V

  • Anode current

    20 mA

  • Durchgriff

    14.6 %

  • Cold anode voltage maximum

    400 V

  • Grid leak resistance maximum

    500 kΩ

Capacitance

  • Grid-anode capacitance

    7 pF