MICROCHIP FPGAs External Visual Inspection Considerations

  • Posted by Antonio Rodríguez Arenas
  • On January 20, 2020
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One of the quality assurance inspections that are performed in EEE parts is external visual inspection. The applicable method for Microchip FPGAs as well as for other parts with generic specification MIL-PRF-38535, is MIL-STD-883 Method 2009.

Savers for ESCC Circular Connectors 38999 Type

  • Posted by Manuel Sánchez Ruiz
  • On January 16, 2020
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ESCC (European Space Components Coordination) released several Detail Specifications to guide European manufacturers on the manufacture and testing of the different series of MIL-DTL-38999 (series I, series II and series III) for Space applications.

Photonic encryption

  • Posted by David Poudereux Sánchez
  • On January 16, 2020
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    • 1 likes
Photonic Encryption, Quantum communications offer many advantages for secure data transmission, such as confidentiality, integrity and spy detectability. Quantum physics allows the encoding of information using the correlation between two or more particles (photons, atoms) thanks to quantum cryptography or Quantum Key Distribution (QKD), a method of processing information arising from the properties of quantum entanglement.

Assembled Resistors. Incomplete wetting

  • Posted by Mari Carmen López
  • On January 15, 2020
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    • 2 likes
Resistors assembled to a PCB have been submitted to the ECSS verification program. Metallographic analysis allows us to check the status of such devices after performing the environmental tests (Vibration & Thermal Cycling).

Derating and Category Concepts for Capacitors

  • Posted by Tomáš Zedníček
  • On January 14, 2020
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Recommendation for voltage derating means that the actual capacitor shall be used in the application at a lower voltage than the rated voltage. Derating is expressed usually by percentage of rated voltage that shall be subtracted. For example, 20% derating means that the capacitor shall be used at 80% of rated voltage at the specific applications (10V capacitor to be used on 8V maximum).

Potentiometers type 2

  • Posted by doEEEt Media Group
  • On January 8, 2020
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Power potentiometers are as a rule wirewound. They are wound on a ceramic body and lack, due to heat dissipation concerns, encapsulation in casings or housings.

Concepts and Measurements

  • Posted by doEEEt Media Group
  • On January 3, 2020
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The product CR x VR is called the CV product and is a measure of the charge quantity. CR is expressed in µF and VR in volt. The product has the quantity µAs or µC (microCoulomb).

Electrolytic Capacitors

  • Posted by doEEEt Media Group
  • On January 3, 2020
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Electrolytic capacitors are more complicated than electrostatic capacitors in their construction. The function of electrolyte is to provide electric connection to the first electrode with very high surface with fine structure and thus to achieve high capacitance values.
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