Pulse grade capacitors need self-healing dielectrics

Posted by doEEEt Media Group
On May 30, 2019
0

Lasers nowadays are one fabrication tool among many for industrial production, measuring and testing applications. Industrial lasers commonly employ a pulse grade capacitor to generate and deliver the energy required to test, measure or make the product or service on offer. In this article, we examine the importance of the self-healing characteristics of metallized film dielectrics used in pulse grade capacitors for industrial laser applications.

ACTIVES, EEE Components, INSPECTION, ELECTRICAL & VERIFICATION, PASSIVES, PHYSICAL, MECHANICAL & ASSEMBLY, TESTING

Flow Stages in Vibration Testing on Hi-Rel EEE Parts

Posted by María Teresa Rodríguez
On May 25, 2019
0

Depending on the intended application electrical components are exposed to either transitory or permanent dynamic mechanical stress which can impair the performance (e.g. mechanically induced crack in PCBs systems or fretting corrosion in connectors and others).

EEE Components, PASSIVES

MLCC capacitors, when cracks occur?

Posted by Mari Carmen López
On May 16, 2019
0

Ceramic capacitors are the most widely used passive component in the electronic circuit. MLCCs are composed of dielectric layers, inner electrodes, and outer terminal electrodes. Some MCLL designs add Flexible Terminations to improve the performance of the device.

EEE Components, PASSIVES

MLCC cracking issues in low voltage is report & evaluates by NASA

Posted by Tomáš Zedníček
On May 15, 2019
0

Report prepared by Alexander Teverovsky, ASRC Federal Space and Defense. NASA recently released an extensive 70pages report on low voltage MLCC cracking issues published on nepp.nasa.gov. The report in detail describes the manufacturing process of MLCC types, provide comparative analyses of MIL, NASA vs ESA vs JAXA specifications, explains qualification procedures and cracking risk issues including degradation and failure mechanisms. The final section recommends methods for workmanship and failure detection.

ABC of CLR, EEE Components, PASSIVES

Comparison Charts of Film & Foil Organic Capacitors

Posted by Tomáš Zedníček
On April 30, 2019
0

Some comparison graphs between different dielectric types of organic capacitors are depicted in this post

ABC of CLR, EEE Components, PASSIVES

Capacitance, Dipoles and Dielectric Absorption

Posted by Tomáš Zedníček
On March 4, 2019
0

The Capacitance is determined by, among other things, the characteristics of the dielectric material. International standards speak of the Dielectric Constant or permittivity, designated by the symbol ε.

ABC of CLR, EEE Components, PASSIVES

Electrostatic Capacitors Constructional Solutions

Posted by Tomáš Zedníček
On February 27, 2019
0

Capacitors can be divided into two main groups: 1) electrostatic, non-polarized and 2) polarized capacitors. Polarized capacitors can be then divided into electrolytic and supercapacitors. See the following chart with more details. The latter is by their construction polarity dependent with one plus terminal and one minus. The electrostatics don’t have this polarity dependence in their dielectric which therefore can be subjected also to alternating voltages.

EEE Components, PASSIVES

Capacitor for filtering applications in SMPS systems

Posted by doEEEt Media Group
On January 23, 2019
0

The type and amount of capacitors to be used mainly depend on the operating conditions of the power supply. Selecting suitable filtering capacitors helps to maximize the reliability of an SMPS.

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