Alternatives & variations Download PDF datasheet

Voltage Dual Pentode ·Pentode-Pentode

6AF9

Dissimilar dual pentode for television receivers, combining a video-output section with a sound-IF, AGC, and sync-separator section.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: B10B
Base pins: 10
Nominal heater: 6.3 V / 850 mA

Description

Dual pentode for television receivers, combining a video-output pentode with a sound-IF/AGC/sync-separator pentode.

Socket description

Decal 10-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B10B
Base pins: 10
Nominal heater voltage: 6.3 V
Nominal heater current: 850 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

Plate resistance: 32000 Ω
Transconductance: 0.022 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 5.1 W
Max cathode current: 60 mA

Unit 1 video-output pentode.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 160000 Ω
Transconductance: 0.0085 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 1.5 W
Max cathode current: 15 mA

Unit 2 sound-IF/AGC/sync-separator pentode.

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

Other

Plate Supply Voltage
550 V
Section1
Grid No.2 Supply Voltage
550 V
Section1

Characteristic

Plate Voltage
170 V
Section1
Grid No.2 Voltage
170 V
Section1
Control Grid Voltage
-2.6 V
Section1
Plate Current
30 mA
Section1
Grid No.2 Current
7.2 mA
Section1

SECTION 2

Pentode

Other

Plate Supply Voltage
550 V
Section2
Grid No.2 Supply Voltage
550 V
Section2

Characteristic

Plate Voltage
150 V
Section2
Grid No.2 Voltage
150 V
Section2
Control Grid Voltage
-2.1 V
Section2
Plate Current
10 mA
Section2
Grid No.2 Current
3 mA
Section2