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Voltage Pentode - Remote Cutoff (single) ·Pentode

6F26

Variable-mu high-frequency pentode for gain-controlled RF amplification in AC, AC/DC, and television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
B9A
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

Variable-mu RF pentode for AC or AC/DC receiver 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
B9A
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

B9A - 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
500000 Ω
Transconductance
0.006 S
Amplification factor
25
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
2.5 W
Max screen dissipation
0.65 W
Max cathode current
15 mA

Published ratings and characteristics promoted from the approved English 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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum Heater Cathode Voltage

    150 V

Capacitance

  • Grid Earth Capacitance

    7.2 pF

  • Anode Earth Capacitance

    3.7 pF

  • Anode Control Grid Capacitance

    0.007 pF

Data set 02

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Application

    RFAmplifier text