6AN7

Triode-hexode frequency changer for superheterodyne receivers. The triode supplies local oscillation while the hexode performs mixing, combining both front-end functions in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9O
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 230 mA

Description

6AN7 is listed in the supplied receiving-tube handbook as a triode-hexode converter. The published heater rating is 6.3 V at 0.23 A. Maximum ratings and representative operating characteristics were transcribed from the supplied table.

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: 9O
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 230 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9O - 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: 1000000 Ω
Transconductance: 0.00075 S
Max plate voltage: 250 V
Max plate dissipation: 1.5 W

Published maximum ratings, representative operating characteristics, and capacitance columns reviewed.

Section 2

Hexode

X-ray radiationInterelectrode capacitances

Plate resistance: 1000000 Ω
Transconductance: 0.00075 S
Max plate voltage: 250 V
Max screen voltage: 125 V
Max plate dissipation: 1.5 W
Max screen dissipation: 0.3 W
Max cathode current: 10 mA

Published maximum ratings, representative operating characteristics, and capacitance columns reviewed.

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 General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 2

Hexode

Other

Maximum plate voltage
250 V
Published handbook rating
Maximum screen voltage
125 V
Published handbook rating
Plate voltage
250 V
ClassA
Screen voltage
85 V
ClassA
Control-grid bias
2 V
ClassA
Plate current
3 mA
ClassA
Screen current
3 mA
ClassA
Triode oscillator plate supply
250 V
Converter Oscillator
Triode oscillator plate current
5.1 mA
Converter Oscillator
Oscillator grid resistor
22000 ohm
Converter Oscillator

Characteristic

Plate resistance
1000000 ohm
Published handbook characteristic
Transconductance
750 µS
Published handbook characteristic
Heater voltage
6.3 V
Published heater rating
Heater current
230 mA
Published heater rating

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Plate voltage
100 V
Plate current
10 mA
Transconductance
2800 uS
Amplification factor
22

Capacitance

Plate-grid capacitance
1 pF

SECTION 2

Hexode

Characteristics

Heater voltage
6.3 V
Heater current
230 mA
Conversion transconductance
700 uS
Plate voltage
250 V
Screen voltage
100 V
Plate current
3 mA
Plate resistance
1000000 ohm
Minimum

Capacitance

Input capacitance
4.8 pF