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Voltage Pentode ·Pentode

C3G

Professional long-life wideband pentode with approximately 14 mA/V transconductance and a guaranteed service life around 10,000 hours.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B8G
Base pins
8
Nominal heater
6.3 V / 370 mA

Description

Professional long-life wide-band pentode with high transconductance and guaranteed 10,000-hour life under specified heater conditions.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B8G
Base pins
8
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 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
300000 Ω
Transconductance
0.014 S
Max plate voltage
220 V
Max screen voltage
220 V
Max plate dissipation
3.5 W
Max screen dissipation
0.7 W
Max grid dissipation
0.05 W
Max cathode current
30 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

1963 Siemens

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

  • Heater current

    370 mA

Characteristics

  • Transconductance

    14000 µS

    Nominal/Bogey

  • Amplification factor

    41

    Nominal/Bogey