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Voltage - Dual Triode (similar) ·Triode-Triode

ECC186

Special-quality twin triode designed for reliable long-life professional amplifier and control service, with paired sections and construction intended for sustained operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
12.6 V / 150 mA

Description

ECC186 is described in the supplied Philips material as a dual triode with series/parallel heater connection. Published electrical ratings and characteristics were extracted from the supplied datasheet.

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
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
7700 Ω
Transconductance
0.0022 S
Amplification factor
17
Max plate voltage
300 V
Max plate dissipation
2.75 W

Identical repeated triode sections compressed to one row. Medium-mu long-life double triode for computer applications and prolonged cut-off operation.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
7700 Ω
Transconductance
0.0022 S
Amplification factor
17
Max plate voltage
300 V
Max plate dissipation
2.75 W

Second physical triode section; added to align rows with SectionCount.

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

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    250 V

  • Plate current

    10.5 mA

  • Maximum plate voltage

    300 V

  • Maximum plate dissipation

    2.75 W

Characteristic

  • Transconductance

    2200 uS

  • Amplification factor

    17

  • Plate resistance

    7.7 kohm

Capacitance

  • Grid capacitance

    1.8 pF

  • Plate capacitance

    0.37 pF

  • Grid-plate capacitance

    1.5 pF

Data set 02

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    300 mA

    Published heater rating

  • Series heater voltage

    12.6 V

    SeriesHeater

  • Series heater current

    150 mA

    SeriesHeater

  • Transconductance

    2200 µS

    EachTriode

  • Amplification factor

    17

    EachTriode

  • Plate resistance

    7700 ohm

    EachTriode

  • Alternate transconductance

    3100 µS

    EachTriode OperatingPoint2

  • Alternate amplification factor

    19.5

    EachTriode OperatingPoint2

  • Alternate plate resistance

    6250 ohm

    EachTriode OperatingPoint2

Other

  • Plate voltage

    250 V

    EachTriode

  • Grid bias

    -8.5 V

    EachTriode

  • Plate current

    10.5 mA

    EachTriode

  • Alternate plate voltage

    100 V

    EachTriode OperatingPoint2

  • Alternate plate current

    11.8 mA

    EachTriode OperatingPoint2

Data set 03

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Typical anode voltage

    250 V

    EachTriode

  • Typical anode current

    10.5 mA

    EachTriode

Characteristic

  • Alternative transconductance

    3100 µS

    Va=100V Vg=0V

  • Alternative amplification factor

    19.5

    Va=100V Vg=0V