Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Triode ·Triode

7533

Integral-cavity triode oscillator for transmitting and signal-generation service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6 V / 160 mA

Description

The 7533 is an integral-cavity triode oscillator assembly developed for transmitting service, combining a high-frequency triode with its resonant cavity structure.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6 V
Nominal heater current
160 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

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
130 V
Max plate dissipation
3.6 W
Max cathode current
34 mA

Published ratings and characteristics mapped semantically; identical repeated sections compressed.

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

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Application

    Radiosonde oscillator

Characteristics

  • Frequency minimum

    1660 MHz

  • Frequency maximum

    1700 MHz

  • Nominal frequency

    1680 MHz

  • Frequency adjustment range

    20 MHz

Other

  • Power output approximate

    575 mW

  • Ambient temperature minimum

    -40 C

  • Ambient temperature maximum

    22 C

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • FrequencyMinimum

    1660 MHz

  • FrequencyMaximum

    1700 MHz

  • PlateInputPower

    4 W

  • Grid Current

    8 mA

Data set 03

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Limitsof Applied Voltage

    6.6 VOLTS

    PublishedTable

  • Dc Plate-To-Grid Voltage

    130 VOLTS

    PublishedTable

  • Plate Dissipation

    3.6 WATTS

    PublishedTable

  • Plate Input

    4 WATTS

    PublishedTable

  • Dc Plate Current

    34 MA

    PublishedTable

  • Dc Grid Current

    8 MA

    PublishedTable

  • Dc Plate Supply Voltage

    117 VOLTS

    PublishedTable

  • Dc Plate Current

    27 MA

    PublishedTable

  • Dc Grid Current

    4.5 MA

    PublishedTable

  • Heater Current At Ef=5.2 V

    157 MA

    PublishedTable

Other

  • Operating Frequency

    1680 MC

    PublishedTable

Data set 04

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Tuning Frequency Minimum

    1660 MHz

    Cathode-driven radiosonde oscillator

  • Tuning Frequency Maximum

    1700 MHz

    Cathode-driven radiosonde oscillator

Other

  • Maximum DC Plate-to-Grid Voltage

    130 V

    Cathode-driven radiosonde oscillator

  • Maximum DC Plate Current

    34 mA

    Cathode-driven radiosonde oscillator

  • Plate Dissipation

    3.6 W

    Cathode-driven radiosonde oscillator

  • Typical DC Plate-to-Grid Voltage

    124 V

    Cathode-driven radiosonde oscillator

  • Typical Useful Power Output

    575 mW

    Cathode-driven radiosonde oscillator