5702

Subminiature RF pentode intended for Class A signal amplification. Its compact construction suits high-frequency voltage-amplifier stages where miniature size is important, with manufacturer data providing the corresponding Class A operating characteristics.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 5702
Socket code: SUBMINIATURE7
Base pins: 7
Nominal heater: 6.3 V / 200 mA

Description

Subminiature RF pentode for Class A amplification.

Socket description

Subminiature 7-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5702
Socket code: SUBMINIATURE7
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5702 - 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: 340000 Ω
Transconductance: 0.005 S
Max plate voltage: 180 V
Max screen voltage: 140 V

Subminiature RF pentode.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Input capacitance
4.4 pF

Other

Plate voltage
120 V
ClassA
Screen-grid voltage
120 V
ClassA
Cathode-bias resistor
200 ohm
ClassA
Plate current
7.5 mA
ClassA
Screen-grid current
2.5 mA
ClassA

Characteristic

Plate resistance
340000 ohm
Transconductance
5000 uS