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884

Gas triode for sweep-circuit oscillator service or grid-controlled rectification. Its controlled discharge supports relaxation oscillators and switching applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: G602
Socket code: UX4
Base pins: 8
Nominal heater: 6.3 V / 600 mA

Description

Gas triode designed for sweep-circuit oscillator service or grid-controlled rectifier operation.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: G602
Socket code: UX4
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

G602 - 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

Thyratron

X-ray radiationInterelectrode capacitances

Max plate voltage: 300 V
Max cathode current: 75 mA

Gas-filled controlled triode/thyratron; 300 V is maximum instantaneous anode voltage in relaxation-oscillator service; 75 mA is maximum average anode current in controlled-rectifier service.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Maximum Plate Voltage
300 V
Maximum Cathode Current
75 mA
Peak Plate Current
300 mA
Average Plate Current
75 mA
Grid-controlled rectifier; after warmup

Characteristic

Tube Voltage Drop
16 V

Data set 02

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Capacitance

Grid-anode capacitance
3.5 pF
Grid-cathode capacitance
3.5 pF
Anode-cathode capacitance
2.5 pF

Characteristic

Approximate conducting voltage drop
16 V

Other

Peak voltage between any two electrodes
350 V
Peak anode current
300 mA
Average anode current below 200 Hz
3 mA
Average anode current above 200 Hz
2 mA
Controlled-rectifier average anode current
75 mA
Heater-cathode DC voltage minimum
-100 V
Heater-cathode DC voltage maximum
25 V

Data set 03

1960 RCA Industrial and Communications Types

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
600 mA
DeviceClass
Negative-control gas triode

Data set 04

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Heater voltage
6.3 V
Nominal
Heater current
600 mA
Nominal
Peak anode voltage - relaxation oscillator service
300 V
Peak anode voltage - relay/rectifier service
350 V
Peak cathode current
300 mA
Average cathode current - relay/rectifier service
75 mA
Peak grid current - relaxation oscillator service
1 mA
DC heater-cathode potential
-100 to +25 V
Ambient temperature range
-75 to +90 C
Recommended heater warmup before conduction
10 s

Capacitance

Grid-to-anode capacitance
6 pF
Grid-to-cathode capacitance
2 pF
Anode-to-cathode capacitance
0.6 pF

Characteristic

Tube voltage drop
16 V