713A

High-frequency pentode using a 6.3 V, 175 mA heater. Manufacturer documentation identifies it for RF signal-amplifier service, with no explicit evidence in the available source for a narrower cutoff or specialized functional category.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 175 mA

Description

High-frequency pentode with 6.3 V, 175 mA heater.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 175 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

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 250000 Ω
Transconductance: 0.004 S
Max plate voltage: 180 V
Max screen voltage: 120 V
Max cathode current: 10.1 mA

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

Pentode

Other

Plate Voltage
120 V
Screen Voltage
120 V
Grid Voltage
-2 V

Characteristic

Plate Current
7.5 mA
Screen Current
2.5 mA