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Power - Beam Single (NOT sweep) (under 10W) ·BeamPower

6CU5

Miniature beam-power pentode designed for audio-frequency output service, particularly the sound-output stage of television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7CY
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 1.2 A

Description

Miniature beam-power tube used in the audio-output stage of television receivers; the listed types are identical except for heater ratings.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7CY
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
1.2 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7CY - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G2AG2 — Screen Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN2G3AG3 — Suppressor GridGroup 7CY2

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN2FCT—FCT — Filament Center TapGroup 7CY2

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN3G1AG1 — Control Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN4F—F — Filament

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN5F—F — Filament

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN6G3AG3 — Suppressor GridGroup 7CY6

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN6FCT—FCT — Filament Center TapGroup 7CY6

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

PIN7PAP — Plate (Anode)

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CY

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
10000 Ω
Transconductance
0.0075 S
Max plate voltage
135 V
Max screen voltage
117 V
Max plate dissipation
6 W
Max screen dissipation
1.25 W
Rectifier max heater-cathode voltage
200 V

Published promoted fields populated from printed headings.

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

Beam Power

Characteristic

  • Transconductance

    7500 uS

    Typical

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate voltage

    120 V

    ClassA

  • Plate current

    49 mA

    ClassA

Characteristics

  • Plate resistance

    10000 Ohm

  • Transconductance

    7500 uS

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    1.2 A

  • Grid-Plate Capacitance

    0.6 pF

  • Input Capacitance

    13 pF

Other

  • Maximum Plate Voltage

    135 V

  • Maximum Plate Dissipation

    6 W

  • Maximum Screen Voltage

    117 V

  • Maximum Screen Dissipation

    1.25 W

Data set 04

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate voltage

    120 V

    ClassA

  • Screen voltage

    120 V

    ClassA

  • Control-grid voltage

    -8 V

    ClassA

  • Load resistance

    2500 ohm

    ClassA

  • Signal power output

    1.3 W

    ClassA

  • Total harmonic distortion

    20 percent

    ClassA

Characteristic

  • Zero-signal plate current

    49 mA

    ClassA

  • Maximum-signal plate current

    50 mA

    ClassA

Capacitance

  • Grid-1-to-plate capacitance

    0.6 pF

  • Input capacitance

    13 pF

  • Output capacitance

    8.5 pF

Data set 05

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • HeaterVoltageNominal

    6.3 V

  • HeaterCurrentNominal

    1.2 A

  • Typical Plate Voltage

    120 V

    ClassA

  • Typical Screen Voltage

    110 V

    ClassA

  • Maximum Signal Power Output

    2.3 W

    ClassA

Characteristic

  • Plate Resistance

    10000 Ohm

  • Transconductance

    7500 uS

Data set 06

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Voltage (AC or DC) — published value 1

    6.3 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Voltage (AC or DC) — published value 2

    10 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current at 6.3 volts — published value 1

    6.3 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Current at 6.3 volts — published value 2

    1.2 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid No.1 to plate

    0.6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • grid No.2, and heater

    13

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • grid No.2, and heater

    8.5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Cathode, — published value 1

    1

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 1 -Cathode, — published value 2

    4

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid No.3

    5

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Grid No.l — published value 1

    2

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 2 -Grid No.l — published value 2

    6

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3 -Heater — published value 1

    3

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Pin 3 -Heater — published value 2

    7

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Voltage

    120 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid—No.2 Voltage

    110 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Grid—No.l Voltage

    8 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Peak AF Grid—No.l Voltage

    8 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Zero—Signal Plate Current

    49 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Zero-Signal Grid—No.2 Current

    4 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Plate Resistance (Approx )

    10000 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Transconductance

    7500

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Load Resistance

    2500 ohm

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Other

  • PLATE VOLTAGE

    150 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • GRID-No.2 (SCREEN-GRID) VOLTAGE

    130 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Positive-bias value

    0 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • PLATE DISSIPATION

    7 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • GRID-No.2 INPUT

    1.4 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • respect to cathode

    200 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • respect td cathode

    200 V

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Max.—Signal Plate Current

    50 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Max. —Signal Grid—No.2 Current

    8.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • Max.—Signal Power Output

    2.3 W

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For fixed—bias operation

    0.1 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

  • For cathode—bias operation

    0.5 mA

    Published datasheet value; multiple values represent separate source-table limits or conditions.

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Heater Voltage (ac/dc) 6.3 12.6

    16.8 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Heater Current 1.2 0.6

    450 mA

    Published in approved 17CU5 target datasheet entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate Voltage

    150 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage

    130 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value

    0 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate Dissipation

    7 W

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid-No.2 Input

    1.4 W

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate Voltage

    120 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid-No.2 Voltage

    110 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid-No.l Voltage

    -8 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Peak AF Grid-No.l Voltage

    8 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Zero-Signal Plate Current

    49 mA

    Published in approved 17CU5 target datasheet entry; Section1

  • Zero-Signal Grid-No.2 Current

    4 mA

    Published in approved 17CU5 target datasheet entry; Section1

  • Maximum-Signal Grid-No.2 Current

    8.5 mA

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    10000 Ω

    Published in approved 17CU5 target datasheet entry; Section1

  • Transconductance

    7500 µS

    Published in approved 17CU5 target datasheet entry; Section1

  • Load Resistance

    2500 Ω

    Published in approved 17CU5 target datasheet entry; Section1

  • Total Harmonic Distortion

    10 %

    Published in approved 17CU5 target datasheet entry; Section1

  • Maximum-Signal Power Output

    2.3 W

    Published in approved 17CU5 target datasheet entry; Section1

  • For fixed-bias operation

    0.1 MΩ

    Published in approved 17CU5 target datasheet entry; Section1

  • For cathode-bias operation

    0.5 MΩ

    Published in approved 17CU5 target datasheet entry; Section1

  • Heater Voltage (ac/dc) 2.1 6.3

    13.5 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Heater Current 0.45 0.135

    60 mA

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate Voltage

    135 V

    Published in approved 17CU5 target datasheet entry; Section1

  • Negative-bias value

    55 V

    Published in approved 17CU5 target datasheet entry; Section1

Capacitance

  • Grid No.l to Plate

    0.6 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    13 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate to Cathode, Heater, Grid No.2, and Grid No.3

    8.5 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid to Plate

    0.92 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Grid to Cathode. Heater, and Shell

    4.3 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate to Cathode, Heater, and Shell

    1.8 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Plate to Cathode

    0.18 pF

    Published in approved 17CU5 target datasheet entry; Section1

  • Heater to Cathode

    1.6 pF

    Published in approved 17CU5 target datasheet entry; Section1