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

35B5

Beam-power output tube designed for audio-frequency power stages in AC/DC radio and television receivers using series-connected heaters.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BZ
Socket code
B8A
Base pins
8
Nominal heater
35 V / 150 mA

Description

Beam power amplifier designed for high power sensitivity at low plate and screen voltages. It uses a nominal 35 V, 0.15 A heater. The supplied datasheet was used for ratings, characteristics, and typical operating data.

Socket description

Rimlock 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7BZ
Socket code
B8A
Base pins
8
Nominal heater voltage
35 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7BZ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1Pin 1AG1 — Control GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN2Pin 2AG3 — Suppressor GridGroup BZ2Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN2Pin 2AK — CathodeGroup BZ2Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN3Pin 3—H — HeaterVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN4Pin 4—H — HeaterVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN5Pin 5AP — Plate (Anode)Verified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN6Pin 6AG2 — Screen GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

PIN7Pin 7AG1 — Control GridVerified

Tung-Sol 6AQ5/6AQ5A 7BZ basing; manufacturer pinout

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
34000 Ω
Transconductance
0.006 S
Max plate voltage
200 V
Max screen voltage
117 V
Max plate dissipation
8.5 W
Max screen dissipation
1 W

Published promoted fields populated by semantic section ownership.

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

Beam Power

Capacitance

  • Input capacitance

    11 pF

    Section1

  • Output capacitance

    6.5 pF

    Section1

  • Grid-to-plate capacitance

    0.4 pF

    Section1

Other

  • Plate voltage

    110 V

    ClassA

  • Screen voltage

    110 V

    ClassA

  • Control-grid voltage

    -7.5 V

    ClassA

  • Plate current

    40 mA

    ClassA

  • Screen current

    3 mA

    ClassA

  • Load resistance

    2500 Ω

    ClassA

  • Power output

    1.5 W

    ClassA

Characteristic

  • Transconductance

    5800 µS

    ClassA

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Power Output

    3 W

    ClassA1

Data set 03

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Plate Resistance

    14000 ohm

    Published datasheet value

  • InterelectrodeCapacitanceDataPublished

    1 boolean

    See supplied datasheet capacitance table

Other

  • MaxPlateVoltage

    117 V

    Published datasheet value

  • MaxScreenVoltage

    117 V

    Published datasheet value

  • MaxPlateDissipation

    4.5 W

    Published datasheet value

  • MaxScreenDissipation

    1 W

    Published datasheet value

  • Heater Voltage

    35 V

    Nominal heater rating

  • Heater Current

    150 mA

    Nominal heater rating