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Voltage - Triode (single) ·Triode

CK5975

Heater-cathode subminiature triode for amplifier and oscillator service in compact electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BB
Socket code
-
Base pins
7
Nominal heater
6.3 V / 175 mA

Description

Subminiature heater-cathode triode for amplifier and oscillator service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7BB
Socket code
-
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
175 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7BB - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1F—F — Filament

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN2PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN3G2AG2 — Screen Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN4G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN5FCT—FCT — Filament Center Tap

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN6PAP — Plate (Anode)

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

PIN7F—F — Filament

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BB

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0051 S
Amplification factor
17.5

Promoted only from clearly identified printed electrical values; additional values retained in TUBE_SECTION_PARAMETER.

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 Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    100 V

    AmplifierOscillator

  • Cathode resistor

    270 Ω

    AmplifierOscillator

  • Plate current

    10 mA

    AmplifierOscillator

Characteristic

  • Amplification factor

    17.5

    Section1

  • Transconductance

    5100 µS

    Section1