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National Electronics

4038

7.75 mm

Description

High domed front. Narrow viewing angle. Silicone rubber outer sleeve (thickness included in tube diameter).

Basic information

Manufacturer: National Electronics · US
Model: 4038
Symbol Height (mm): 7.75 mm
Base type: SK-116 · 1b
View: End view
Outer diameter × Overall height: 17.0 mm × 27.0 mm

Electrical parameters

Min supply voltage: 170.0 V
Max ionization voltage: 170.0 V
Typical maintaining voltage: 145.0 V
Min cathode current: 0.70 mA
Typical cathode current: 1.00 mA
Max cathode current: 1.40 mA

Available cathodes

A E G H J K L M

Substitutes

4038 B-4038 NL-4038