1X2C

Later-version filamentary high-voltage rectifier for television flyback/EHT service. It rectifies horizontal-output transformer pulses to produce the CRT accelerating-voltage supply.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9Y
Socket code: B9A
Base pins: 9
Nominal heater: 1.25 V / 200 mA

Description

1X2C is a high-voltage vacuum rectifier for television power-supply or flyback service. The supplied RCA manual excerpt was reviewed for heater data, physical sections, maximum ratings, electrical characteristics, capacitances, and stated operating conditions.

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: 9Y
Socket code: B9A
Base pins: 9
Nominal heater voltage: 1.25 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9Y - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1F1	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN2F2	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN3IC	—	IC Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN4F1	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN5F2	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN6F1	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN7IC	—	IC Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN8F2	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
PIN9F1	—	F — Filament Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y
CAP1P	A	P — Plate (Anode) Transcribed from EIA chart; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9Y

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
Rectifier forward voltage drop: 80 V

Rectifier section; ratings and characteristics promoted where clearly attributable.

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

Filament Voltage (ac)
1.25 V
Filament Voltage (ac) 1.25 volts
Filament Current
200 mA
Filament Current 0.2 ampere
Peak Plate Current
45 mA
Peak Plate Current 45 mA
Tube Voltage Drop for plate current of
7 mA
Tube Voltage Drop for plate current of 7 mA volts
# Pulse duration must not exceed 15% of a horizontal scanning cycle (
10 us
# Pulse duration must not exceed 15% of a horizontal scanning cycle (10 microseconds).
Peak Plate Current
90 mA
Peak Plate Current 90 mA
Average Plate Current
1.7 mA
Average Plate Current 1.7 mA
Average output/plate current
0.5 mA
Published section value

Characteristic

Heater voltage
1.25 V
Rated heater condition
Heater current
200 mA
Rated heater condition