3CZ3A

High-voltage pulsed rectifier for television flyback-derived CRT power supplies. Its specialized high-voltage construction is intended to rectify horizontal-output pulses rather than ordinary line-frequency power.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 8EZ
Socket code: IO
Base pins: 8
Nominal heater: 3.15 V / 480 mA

Description

A vacuum rectifier documented for television or power-supply service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8EZ
Socket code: IO
Base pins: 8
Nominal heater voltage: 3.15 V
Nominal heater current: 480 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8EZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IC	—	IC EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
PIN2H	—	H — Heater EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
PIN3IC	—	IC EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
PIN5IC	—	IC EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
PIN7K	A	K — CathodeGroup 8EZ7 EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
PIN7H	—	H — HeaterGroup 8EZ7 EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ
CAP1P	A	P — Plate (Anode) EIA chart transcription; manufacturer verification pending	Unverified EIA Base Connections, printed page 130, 8EZ

Section ratings

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 38000 V
Rectifier nominal output current: 2.2 mA
Rectifier peak forward current: 110 mA
Rectifier forward voltage drop: 60 V

Pulsed

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

Rectifier

Other

Heater absolute maximum voltage
3.65 V
FlybackRectifier
Heater absolute minimum voltage
2.65 V
FlybackRectifier

Characteristic

X-radiation maximum
25 mR/hr
LotSamplingBasis