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Voltage Triode Pentode ·Pentode-Triode

6H7S

Combined power pentode and high-mu triode for amplifier service; source data do not establish the project’s 5-watt power threshold.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
UX7
Base pins
7
Nominal heater
6.3 V / 400 mA

Description

Combined power pentode and high-mu triode for amplifier service.

Socket description

Small 7-contact (0.75-inch pin circle)

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX7
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
400 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.0022 S
Max plate voltage
250 V
Max screen voltage
250 V

Published Rogers/JETEC/RMA ratings and characteristics promoted where applicable; additional data retained as parameters.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Amplification factor
100

Published Rogers/JETEC/RMA ratings and characteristics promoted where applicable; additional data retained as parameters.

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

1959 Rogers

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

  • Application

    Power pentode amplifier

SECTION 2

Triode

Application

  • Application

    High-mu triode amplifier