12Z5

Heater-type high-vacuum full-wave rectifier with a center-tapped heater permitting flexible series or parallel heater operation. Its dual rectifier sections provide moderate-current power-supply service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: 6
Nominal heater: 12.6 V / 400 mA

Description

Heater-type high-vacuum full-wave rectifier with a center-tapped heater permitting either 6.3-volt parallel or 12.6-volt series heater operation.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 6
Nominal heater voltage: 12.6 V
Nominal heater current: 400 mA
Parallel heater voltage: 6.3 V
Parallel heater current: 800 mA
Series capable: Yes

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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 60 mA

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 60 mA

Physical rectifier section 2; electrical properties populated from the same published ratings applicable to the identical rectifier path.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Heater voltage
6.3 V
Nominal
Heater current
800 mA
Nominal
AC plate voltage per plate RMS
230 V
CapacitorInputFilter
DC output current
60 mA
CapacitorInputFilter

SECTION 2

Rectifier

Other

Heater voltage
6.3 V
Nominal
Heater voltage
6.3 V
Nominal
Heater current
800 mA
Nominal
Heater current
800 mA
Nominal
AC plate voltage per plate RMS
230 V
CapacitorInputFilter
AC plate voltage per plate RMS
230 V
CapacitorInputFilter
DC output current
60 mA
CapacitorInputFilter