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Voltage - Triple Triode ·Triode-Triode-Triode

8AC10

High-mu triple triode used in matrixing color-difference circuits of color television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
12FE
Socket code
B12C
Base pins
12
Nominal heater
8.4 V / 450 mA

Description

High-mu triple triode used in matrixing color-difference circuits of color television receivers.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
12FE
Socket code
B12C
Base pins
12
Nominal heater voltage
8.4 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

12FE - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
10700 Ω
Transconductance
0.0058 S
Amplification factor
62
Max plate voltage
330 V
Max plate dissipation
2 W

One representative row for three identical triodes; this sheet reproduces heater data and cross-references 6AC10 for the remaining ratings.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
10700 Ω
Transconductance
0.0058 S
Amplification factor
62
Max plate voltage
330 V
Max plate dissipation
2 W

Physical triode section added to align rows with SectionCount.

Section 3

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
10700 Ω
Transconductance
0.0058 S
Amplification factor
62
Max plate voltage
330 V
Max plate dissipation
2 W

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HeaterOrFilamentVoltageNominal

    8.4 V

  • HeaterOrFilamentCurrentNominal

    450 mA

  • PublishedCrossReference

    6AC10

    Source states electrical identity except noted heater/mechanical differences

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage

    1530 V

    Published in approved 8AC10 target datasheet entry; Section1

  • Plate Dissipation

    2 W

    Published in approved 8AC10 target datasheet entry; Section1

  • Plate Voltage

    200 V

    Published in approved 8AC10 target datasheet entry; Section1

  • Cathode-Bias Resistor

    160 Ω

    Published in approved 8AC10 target datasheet entry; Section1

  • Plate Resistance (Approx.)

    10700 Ω

    Published in approved 8AC10 target datasheet entry; Section1

  • Transconductance

    5800 µS

    Published in approved 8AC10 target datasheet entry; Section1

  • Plate Current

    9 mA

    Published in approved 8AC10 target datasheet entry; Section1

  • Grid Voltage (approx.) for plate current of 100 /iA

    -5 V

    Published in approved 8AC10 target datasheet entry; Section1

  • Grid-Circuit Resistance

    0.5 MΩ

    Published in approved 8AC10 target datasheet entry; Section1