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Voltage - Dual Triode (dissimilar) ·Triode-Triode

5HC7

Dissimilar twin triode designed for television sync-clipper and gated-AGC amplifier service, combining sections of substantially different gain and current capability in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B12C
Base pins
12
Nominal heater
5.6 V / 450 mA

Description

5HC7 is a DualTriode device. Two dissimilar triodes for television sync-clipper and gated-AGC amplifier service; electrically identical to 4HC7 except heater ratings.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B12C
Base pins
12
Nominal heater voltage
5.6 V
Nominal heater current
450 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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5200 Ω
Transconductance
0.0044 S
Amplification factor
23
Max plate voltage
330 V
Max plate dissipation
3 W

Two dissimilar triodes for television sync-clipper and gated-AGC amplifier service; electrically identical to 4HC7 except heater ratings.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
53000 Ω
Transconductance
0.0019 S
Amplification factor
100
Max plate voltage
330 V
Max plate dissipation
1.2 W

Two dissimilar triodes for television sync-clipper and gated-AGC amplifier service; electrically identical to 4HC7 except heater ratings.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage

    5.6 V

  • Heater current

    450 mA

SECTION 2

Triode

Other

  • Heater voltage

    5.6 V

  • Heater current

    450 mA

Data set 02

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Plate voltage

    150 V

    Triode1

  • Grid voltage

    -1 V

    Triode1

  • Plate current

    18 mA

    Triode1

  • Transconductance

    4400 uS

    Triode1

  • Amplification factor

    23

    Triode1

  • Plate resistance

    5.2 kOhm

    Triode1

Capacitance

  • Grid-to-plate capacitance

    1.9 pF

    Triode1

SECTION 2

Triode

Characteristic

  • Plate voltage

    150 V

    Triode2

  • Grid voltage

    -1 V

    Triode2

  • Plate current

    1 mA

    Triode2

  • Transconductance

    1900 uS

    Triode2

  • Amplification factor

    100

    Triode2

  • Plate resistance

    53 kOhm

    Triode2

Capacitance

  • Grid-to-plate capacitance

    2.2 pF

    Triode2