3CY3

High-voltage television rectifier in the 3DB3/3CY3 family, designed for pulsed flyback-derived picture-tube power supplies. Its function is specialized CRT high-voltage generation rather than conventional mains rectification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: IO
Base pins: 8
Nominal heater: 3.15 V / 245 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: -
Socket code: IO
Base pins: 8
Nominal heater voltage: 3.15 V
Nominal heater current: 245 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: 38000 V
Rectifier nominal output current: 2 mA
Rectifier peak forward current: 100 mA
Rectifier forward voltage drop: 60 V

Flyback

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