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6BQ11

Twin pentode designed for television receiver applications; available documentation does not establish a more specific role than general television signal amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B12C
Base pins: 12
Nominal heater: 10.6 V / 450 mA

Description

Twin pentode for television receiver applications. The supplied datasheet was read for heater data, maximum ratings, characteristics, typical operating information, and interelectrode capacitances where published.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B12C
Base pins: 12
Nominal heater voltage: 10.6 V
Nominal heater current: 450 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

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.013 S
Max plate voltage: 125 V
Max screen voltage: 330 V
Max plate dissipation: 3.1 W

Published electrical data promoted where unambiguous; additional values retained as parameters.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.013 S
Max plate voltage: 125 V
Max screen voltage: 330 V
Max plate dissipation: 3.1 W

Published electrical data promoted where unambiguous; additional values retained as parameters.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Grid-No.2 (Screen-Grid) Supply Voltage
330 volts
Published datasheet value
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published datasheet value
Plate Voltage
125 volts
Published datasheet value
Grid-No.2 Voltage
125 volts
Published datasheet value
Cathode-Bias Resistor
56 ohms
Published datasheet value
Plate Resistance (Approx.)
0.2 megohm
Published datasheet value
Transconductance
13000 µS
Published datasheet value
Plate Current
11 mA
Published datasheet value
Grid-No.2 Current
3.8 mA
Published datasheet value
Grid-No.l-Circuit Resistance, for cathode-bias operation
0.25 megohm
Published datasheet value
Heater Warm-up Time (Average) .... 11
11 seconds
Published datasheet value
Plate Voltage
300 volts
Published datasheet value
Grid-No.2 (Screen-Grid) Voltage
300 volts
Published datasheet value
Grid-No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published datasheet value
Cathode Current
65 mA
Published datasheet value
Transconductance
0.013 A/V
Promoted from published datasheet table

Other

Plate Dissipation
3.1 watts
Published datasheet value
Maximum Plate Voltage
125 V
Promoted from published datasheet table
Maximum Screen Voltage
330 V
Promoted from published datasheet table
Maximum Plate Dissipation
3.1 W
Promoted from published datasheet table

Capacitance

Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3
10.8 pF
Published datasheet value
Plate to Cathode, Heater, Grid No.2, and Grid No.3
6.5 pF
Published datasheet value