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Power - Pentode Single (NOT beam) (under 10W) ·Pentode

60FX5

Power/output pentode designed for audio, broadband, telephone, industrial, or general power-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7CV
Socket code
B7G
Base pins
7
Nominal heater
60 V / 100 mA

Description

Miniature power pentode used in output stages of audio amplifiers.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7CV
Socket code
B7G
Base pins
7
Nominal heater voltage
60 V
Nominal heater current
100 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7CV - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G3AG3 — Suppressor GridGroup 7CV1

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN1KAK — CathodeGroup 7CV1

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN2G1AG1 — Control Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN3H—H — Heater

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN4H—H — Heater

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN5G1AG1 — Control Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN6G2AG2 — Screen Grid

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

PIN7PAP — Plate (Anode)

EIA chart transcription; independent manufacturer verification pending

Unverified

EIA Base Connections, printed page 128, 7CV

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
17500 Ω
Transconductance
0.0135 S
Max plate voltage
150 V
Max screen voltage
130 V
Max plate dissipation
5.5 W
Max screen dissipation
2 W
Max cathode current
50 mA

Values promoted from the supplied Sylvania source where explicitly published.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater Voltage

    60 V

  • Heater Current

    100 mA

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Service

    Transformerless AC/DC audio output

  • Power Output

    2.3 W

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • HeaterOrFilamentVoltage

    60 V

  • HeaterOrFilamentCurrent

    100 mA

  • Transconductance

    13500 uS

  • Input Capacitance

    8.5 pF

  • Output Capacitance

    8.5 pF

Other

  • Plate Voltage

    110 V

    ClassA

  • Screen Voltage

    110 V

    ClassA

  • Plate Current

    50 mA

    ClassA

  • Screen Current

    7 mA

    ClassA

  • Load Resistance

    2500 ohm

    ClassA

  • Power Output

    1.3 W

    ClassA

  • PushPullPowerOutput

    10 W

    TwoTubes;PushPull;ClassAB

  • Grid Voltage

    -5 V

    ClassA

Data set 04

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    60 V

  • Heater current

    100 mA

  • Plate supply voltage

    110 V

    ClassA

  • Screen supply voltage

    115 V

    ClassA

  • Cathode resistor

    62 ohm

    ClassA

  • Plate current

    36 mA

    ClassA

  • Screen current

    10 mA

    ClassA

  • Maximum-signal power output

    1.3 W

    ClassA

  • Maximum plate voltage

    150 V

  • Maximum screen voltage

    130 V

  • Maximum plate dissipation

    5.5 W

  • Maximum screen dissipation

    2 W

Data set 05

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    60 V

  • Heater current

    100 mA

  • Plate voltage

    110 V

    ClassA

  • Screen voltage

    115 V

    ClassA

  • Cathode resistor

    62 ohm

    ClassA

  • Plate current

    36 mA

    ClassA

  • Screen current

    10 mA

    ClassA

  • Maximum plate voltage

    150 V

  • Maximum screen voltage

    130 V

  • Plate dissipation

    5.5 W

  • Screen input

    2 W

Characteristic

  • Plate resistance

    17500 ohm

    ClassA

  • Transconductance

    13500 uS

    ClassA

Capacitance

  • Grid-to-plate capacitance

    0.65 pF

  • Input capacitance

    17 pF

  • Output capacitance

    9 pF

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater Voltage (ac/dc) 12.6 18.9

    60 V

    Published in approved 12FX5 target entry; Section1

  • Heater Current 0.45 0.3

    100 mA

    Published in approved 12FX5 target entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 12FX5 target entry; Section1

  • Plate Voltage

    150 V

    Published in approved 12FX5 target entry; Section1

  • Grid-No.2 (Screen-Grid) Voltage

    130 V

    Published in approved 12FX5 target entry; Section1

  • Plate Dissipation

    5.5 W

    Published in approved 12FX5 target entry; Section1

  • Grid-No.2 Input

    2 W

    Published in approved 12FX5 target entry; Section1

  • Plate Supply Voltage

    110 V

    Published in approved 12FX5 target entry; Section1

  • Grid-No.2 Supply Voltage

    116 V

    Published in approved 12FX5 target entry; Section1

  • Cathode-Bias Resistor

    62 Ω

    Published in approved 12FX5 target entry; Section1

  • Peak AF Grid-No.l Voltage

    3 V

    Published in approved 12FX5 target entry; Section1

  • Zero-Signal Plate Current

    36 mA

    Published in approved 12FX5 target entry; Section1

  • Maximum-Signal Plate Current

    35 mA

    Published in approved 12FX5 target entry; Section1

  • Transconductance

    13600 µS

    Published in approved 12FX5 target entry; Section1

  • Load Resistance

    3000 Ω

    Published in approved 12FX5 target entry; Section1

Capacitance

  • Grid No.l to Plate

    0.65 pF

    Published in approved 12FX5 target entry; Section1

  • Grid No 1 to Cathode. Heater, Grid No.2, and Grid No.3

    17 pF

    Published in approved 12FX5 target entry; Section1

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

    9 pF

    Published in approved 12FX5 target entry; Section1