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ABC of CLR, EEE Components, PASSIVES, PHYSICAL, MECHANICAL & ASSEMBLY, TESTING

Mounting Guidelines: Soldering, PCB Handling & Rework

  • Posted by Tomáš Zedníček
  • On October 18, 2020
  • 1
What are the optimum soldering conditions and solder fillet? The best solder fillet for all SMT applications is one which makes a reliable connection and which best withstands the environmental exposures of the products with minimum degradation. This fillet is difficult to describe quantitatively for all parts. The optimum fillet ranges in height from about 1/3 to 2/3 of the part termination height. This does not mean that all solder joints outside of this range should be repaired. It does mean that this is the target for the process engineer to reach for in his process. As many as possible of the solder fillets on the board should be in this range.
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Non-standard testing, TESTING

ANGULAR SENSORS MEASUREMENTS

  • Posted by Alina Spuma,
  • On February 18, 2022
  • 0
Under ESA contract number 20945/07/NL/IA, Alter Technology developed test benches for the characterization and qualification testing of 16bit (0.01º accuracy) Contactless angular sensors prototypes for telecom satellites’ extended life mechanisms. Angular sensors (AS) are position devices that provide the displacement in angular degrees concerning a fixed point or an arbitrary reference. The central performances to be measured are accuracy, hysteresis, and measuring range. These parameters must be measured before, during, and after applying environmental treatment during the qualification test campaign.
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EEE Components, PASSIVES

Disposable Resistors, Supercapacitors or Transistors on Sheet of Paper

  • Posted by doEEEt Media Group
  • On October 14, 2022
  • 0
This work’s primary objective is to develop a cost-effective, eco-friendly, all-paper device for single-use applications that can be easily and safely disposed of through incineration or biodegradation. All electronic components are paper-based and integrated on paper-based printed circuit boards (PCBs), innovatively providing a realistic and practical solution for green electronic platforms.
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ACTIVES, ALTER Laboratory Services, EEE Components, PASSIVES, RF & MW, TESTING

Steps to Procurement of Electronic Components

  • Posted by Manuel Padial Pérez
  • On November 20, 2020
  • 0
Satellites with ESA as end customer and a prime contractor. This is a procurement approach where the agent receives the purchase orders for parts from various parts users, extracts and compiles the total need quantities per type and manufacturer, along with the necessary attrition (including DPA, LAT or QCI and radiation samples) and places the purchase orders at the corresponding manufacturers. Upon receipt of the flight parts by the CPPA, the ordered parts quantities will be tested as required and shipped to the individual users. The main features of the co-ordinated procurement are:
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ACTIVES, EEE Components

Conductive Epoxy Capacitor Mounting Explained

  • Posted by doEEEt Media Group
  • On April 13, 2021
  • 0
MT components used in conductive epoxy processes must be compatible with the hydroscopic nature of electrically conductive epoxies. Conductive epoxy attachment offers a very low stress, low-temperature attachment method of creating end circuitry. Several important trends in SMT component technology are emerging, possibly limiting (small case size, FlexiTerm termination) – or expand (MLO technology) using conductive epoxy as an attachment method.
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EEE Components, PASSIVES

EMI Filters Selection Guide

  • Posted by doEEEt Media Group
  • On November 9, 2020
  • 0
EMI is emitted by a number of both natural and engineered sources and is a hazard that virtually all electronic devices must be adequately protected from, regardless of application area. Board-level EMI suppression filters are one of the most common electromagnetic compatibility solutions and are widely available in a broad range of sizes, configurations, materials, capabilities, and costs.
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Optoelectronics, TESTING

Thermal Vacuum For HV Optocouplers – Video Monitoring

  • Posted by Juan Moreno Echarri
  • On January 12, 2022
  • 0
Laser screening tests are done to comply with users’ requirements; two different challenges must be addressed. First, high-power lasers (30watts in this case) require specific test setups and important safety considerations to avoid dangerous situations in case of DUT/setup failure.
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