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The following data for 4021 is sourced from B-4021. Burroughs B-4021

Burroughs

4021

7.75 mm

Description

Low voltage design. High domed front.

Basic information

Manufacturer: Burroughs · US
Model: 4021
Symbol Height (mm): 7.75 mm
Base type: SK-116 · 1
View: End view
Outer diameter × Overall height: 16.5 mm × 23.5 mm

Electrical parameters

Min supply voltage: 120.0 V
Max ionization voltage: 120.0 V
Typical maintaining voltage: 102.0 V
Min cathode current: 0.70 mA
Typical cathode current: 1.00 mA
Max cathode current: 1.40 mA

Available cathodes

0 1 2 3 4 5 6 7 8 9

Substitutes

4021 4032 4041 5810 7009 7977 8502 B-4021AL B-4021G B-4021L B-4032 B-4041 B-4081 B-7009 BD-200 BD-200S BD-244 JAN-7009 JAN-7977 JAN-8502 NL-4021 NL-4021A NL-4021AL NL-4032 NL-4041 NL-7009 NL-7977 NL-8502 ZM1120 ZM1120 ZM1122