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Tube Tinker — Electron Tube Database
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Voltage - Dual Triode (similar) ·Triode-Triode

7025A

No short description is recorded for this tube.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 150 mA

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
12.6 V
Nominal heater current
150 mA
Parallel heater voltage
6.3 V
Parallel heater current
300 mA
Series capable
Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
80000 Ω
Transconductance
0.00125 S
Amplification factor
100

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
80000 Ω
Transconductance
0.00125 S
Amplification factor
100

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

9999 Mixed D 1000

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    100 V

  • Grid Voltage

    -1 V

  • Plate Current

    0.5 mA

Capacitance

  • Grid To Plate Capacitance

    1.7 pF

  • Input Capacitance

    1.6 pF

  • Output Capacitance

    0.46 pF

SECTION 2

Triode

Other

  • Plate Voltage

    100 V

  • Grid Voltage

    -1 V

  • Plate Current

    0.5 mA

Capacitance

  • Grid To Plate Capacitance

    1.7 pF

  • Input Capacitance

    1.6 pF

  • Output Capacitance

    0.46 pF