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Tube Tinker — Electron Tube Database
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Power - Beam (NOT sweep) ·BeamPower

1625

Beam-power transmitting tube intended for RF power amplification and oscillator service, also capable of high-power push-pull Class-AB audio operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
U7B
Base pins
-
Nominal heater
12.6 V / 450 mA

Description

Beam-power transmitting tube of heater-cathode construction, intended for RF power amplification and oscillation and also useful in high-power audio service.

Socket description

Medium 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
U7B
Base pins
-
Nominal heater voltage
12.6 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances
Amplification factor
8
Max plate voltage
750 V
Max screen voltage
250 V
Max plate dissipation
30 W
Max screen dissipation
3.5 W

Representative electrical section; promoted values mapped from published ratings and characteristics 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

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum signal plate input per tube

    90 W

    ClassAB Audio

  • Maximum signal power output two tubes

    120 W

    ClassAB PushPull

  • Maximum operating frequency

    60 MHz

    Published datasheet value

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Plate Voltage

    600 V

    ClassC;RFPowerAmplifierOrOscillator

  • Power Output

    35 W

    ClassC