6CC41

High-mu twin triode with separate cathodes intended for resistance-coupled audio-frequency voltage amplification, providing two high-gain amplifier sections.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: S9/12
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 300 mA

Description

High-mu twin triode with separate cathodes for AF resistance-coupled amplification.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: S9/12
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

S9/12 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.002 S
Amplification factor: 100
Max plate voltage: 300 V
Max plate dissipation: 1 W
Max cathode current: 10 mA

Representative electrical section; repeated identical physical sections compressed where applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.002 S
Amplification factor: 100
Max plate voltage: 300 V
Max plate dissipation: 1 W
Max cathode current: 10 mA

Second physical triode section; electrically identical twin section.

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate voltage
250 V
Section1/Section2
Grid bias
-1.5 V
Section1/Section2
Plate current
2.3 mA
Section1/Section2

Capacitance

Input capacitance
1.75 pF
Section1/Section2
Output capacitance
1.3 pF
Section1/Section2