ECA 186-4E Passive Electronic Component Parts, Test Methods for; Method 4: Dielectric Test (Withstanding Voltage)
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ECA 186-4E Document Information:
Title
Passive Electronic Component Parts, Test Methods for; Method 4: Dielectric Test (Withstanding Voltage)
Electronic Components Association
Publication Date:
Oct 1, 1978
Scope:
PURPOSE
This dielectric test is performed for the purpose of determining
the ability of component parts to withstand a potential at sea
level or at a specified altitude. The potential used is normally
above rated voltage and simulates momentary overpotentials due to
switching, surges, and other similar phenomena. AIthough this test
is often called a voltage breakdown or dielectric strength test,
the intention is not to cause a breakdown of the insulation of to
detect corona, but to determine whether insulating materials and
spacings in the component are adequate. If a specimen is faulty in
these respects, application of the test voltage will result in
either an air, surface, or puncture discharge.
In the following paragraphs, when items are required to be
specified, it is understood to refer to the individual
specification.
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