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Microsectioning - Short Technical Notes, PHYSICAL, MECHANICAL & ASSEMBLY, TESTING

Evaluation of Electronic Assemblies

  • Posted by Mari Carmen López
  • On July 18, 2020
  • 0

Cross-sectioned devices were metallographic prepared in ALTER TECHNOLOGY Materials & Processes Laboratory, recognized as a recommended facility for such activity by ESA authority (MEMO ESA-TECMSP-MO-013165).

Sample & Method

Devices assembled to a PCB have been submitted to the ECSS verification program. Metallographic analysis allows us to check the status of such devices and their solder connections after performing different stress tests (Vibration & Thermal Cycling).

Remark

Assembly process of THT or SMT onto PCBs for spacecraft applications follow well-established design requirements based on specifications prepared by ECSS (ECSS-Q-ST-70-08C & ECSS-Q-ST-70-38C), NASA and IPC (IPC-6012). These documents collect not only the technical requirements but also the quality assurance provisions for the manufacture and verification of such high-reliability electronic circuits.

These standards also define the verification testing, which includes accelerating reliability testing, in order to assess the solder failure mechanisms and to calculate the effective life of such devices, and the accept/reject criteria for the final inspection.

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Mari Carmen López
Mari Carmen López

Head Of Materials and Processes Laboratory


Mari Carmen has a degree in Degree in Chemistry and a PhD. in Materials Science.


She is responsible for the Materials & Process Laboratory of Alter Technology. Her work is focused on investigating the effects of the environment on electrical components, materials, and processes. As the head of the laboratory, she also manages the studies conducted to evaluate the quality of a bare or assembled printed circuit board in relation to ECSS standards or according to the customer’s specifications.

Mari Carmen López
Latest posts by Mari Carmen López (see all)
  • Why Microsectioning sample preparation of PCB systems? - May 19, 2021
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  • Plating Thickness Testing Overview in Alter Technology Lab. - July 28, 2020
TAGS: EEE PARTS MICROSECTIONING EEE PARTS SOLDERABILITY EEE PARTS THERMAL CYCLING EEE PARTS VIBRATION TEST EVALUATION HI-REL MATERIAL PROCESSES PCB ASSEMBLY

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