2AZ2

Miniature directly heated high-voltage rectifier specifically for television flyback supplies. It converts horizontal-output transformer pulses into CRT accelerating voltage at low average current.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 2 V / 200 mA

Description

Miniature directly heated high-voltage half-wave rectifier for television flyback supplies.

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: -
Socket code: B9A
Base pins: 9
Nominal heater voltage: 2 V
Nominal heater current: 200 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 22000 V
Rectifier nominal output current: 0.5 mA
Rectifier peak forward current: 45 mA

Published source ratings and characteristics promoted where applicable; additional electrical and operating data 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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Tube voltage drop at 7 mA
70 V

Other

Total DC+peak inverse voltage maximum
22000 V
DC inverse voltage maximum
18000 V
Peak plate current maximum
45 mA
Average plate current maximum
0.5 mA

Capacitance

Plate-to-all capacitance maximum
1.1 pF