Alternatives & variations Download PDF datasheet

21B13

Heavy-current thyratron for industrial controlled-power service. Published ratings identify substantial grid-controlled gas-discharge switching capability.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 21 A

Description

21B13 Thyratron; full semantic REDO from printed ratings and characteristics.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 5 V
Nominal heater current: 21 A
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

Triode

X-ray radiationInterelectrode capacitances

Max cathode current: 10 A

REDO promoted-field audit

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 AEI Industrial Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Maximum peak forward anode voltage
12 kV
Maximum peak inverse anode voltage
12 kV
Maximum peak cathode current
100 A
Maximum surge cathode current
2000 A
Maximum anode voltage drop
18 V
Minimum preheat time
120 s
Anode-grid capacitance
8.8 pF
Grid-cathode capacitance
13.4 pF

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Maximum peak forward anode voltage
12 kV
Maximum peak inverse anode voltage
12 kV
Maximum peak cathode current
100 A
Maximum surge cathode current
2000 A