50CD6G

50 V-heater power pentode designed as a television line time-base output valve, providing the switching current and multi-kilovolt pulse tolerance required for horizontal scanning.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 5BT
Socket code: IO
Base pins: 8
Nominal heater: 50 V / 300 mA

Description

The BRIMAR 50CD6G is a 50 V heater line time-base output valve for television service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5BT
Socket code: IO
Base pins: 8
Nominal heater voltage: 50 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5BT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen Source designation IS; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN2H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3G3	A	G3 — Suppressor GridGroup 5BT3 Source designation G3; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3K	A	K — CathodeGroup 5BT3 Source designation K; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN5G1	A	G1 — Control Grid Source designation G1; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN7H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN8G2	A	G2 — Screen Grid Source designation G2; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
CAP1P	A	P — Plate (Anode) Source designation P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 7200 Ω
Transconductance: 0.0074 S
Max plate voltage: 175 V
Max screen voltage: 175 V
Max plate dissipation: 15 W
Max screen dissipation: 5 W

Published source values promoted where applicable.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Maximum plate voltage
700 V
Published handbook rating
Maximum screen voltage
175 V
Published handbook rating
Plate voltage
60 V
ClassA
Screen voltage
100 V
ClassA
Control-grid bias
0 V
ClassA
Plate current
230 mA
ClassA
Screen current
21 mA
ClassA
Maximum positive pulse plate voltage
6600 V
HorizontalDeflection
Maximum plate dissipation
15 W
HorizontalDeflection
Maximum screen dissipation
3 W
HorizontalDeflection
Maximum DC cathode current
200 mA
HorizontalDeflection

Characteristic

Plate resistance
7200 ohm
Published handbook characteristic
Transconductance
7700 µS
Published handbook characteristic
Heater/filament voltage
50 V
Published heater/filament rating
Heater/filament current
300 mA
Published heater/filament rating