Calibration sources characterization in vacuum conditions

Posted by Alejandro López Moya
On September 23, 2021
0

One of our customers requested that we carry a thermal cycling test at extreme temperatures (between 93ºC and -178ºC) over some VIS-NIR calibration sources (five samples at a time). At the same time, these sources were tested in vacuum conditions, and electro-optical characterization at different temperatures during cycling was requested.

Optoelectronics Components Testing

Photonic Integrated Circuits radiation for harsh environments

Posted by David Poudereux Sánchez
On September 23, 2021
0

The satellite market is experiencing a paradigm shift with the photonics penetration in every part of the satellite payload. Although some advances have been done with the introduction of optical interconnects in a commercial digital processor of a satellite payload.

EEE Components, MANUFACTURER NOTIFICATION, PASSIVES

Shipment Release Notification, Vishay Military Type RNR55 Resistors, MIL-PRF-55182

Posted by Emilio Cano García
On September 21, 2020
0

The shipment release is for RNR55, Vishay models HDN55, Characteristic “C” and “E”, resistance values 10 ohms thru 1.21 meg-ohms; tolerances B, D, and F Life Failure rate C, M, P, R, and S.

EEE Components, ENGINEERING AND PROJECT MANAGEMENT SUPPORT

CPSA – Scientific Payload Instruments Consultancy Platform

Posted by Paloma Serrano
On November 3, 2020
0

The CPSA is a project supported by Alter Technology to provide Consultancy services related to EEE parts during the early phase of space missions covered by the ESA Science Programme. At this stage, the definition of technical aspects and requirements for the different instruments is still taking place, and it is the best moment for EEE part selection and assessment according to mission requirements.

Small Sats Testing

Alter Technology Clean Rooms

Posted by doEEEt Media Group
On June 2, 2021
0

A cleanroom is a controlled environment where products are processed. It is a room in which the concentration of airborne particles is controlled to specified limits. Eliminating sub-micron airborne contamination is really a process of control. These contaminants are generated by people, processes, facilities, and equipment. They must be continually removed from the air.

Optoelectronics, TESTING

Calibration Sources in Vacuum Conditions

Posted by Alejandro López Moya
On January 13, 2022
0

Our Optoelectronics department knows how to fulfill this need. One of our customers requested that we carry a thermal cycling test at extreme temperatures (between 93ºC and -178ºC) over some VIS-NIR calibration sources (five samples at a time). At the same time, these sources were tested in vacuum conditions, and electro-optical characterization at different temperatures during cycling was requested.

ALTER Innovation, ENDURANCE, ENVIRONMENTAL & RADIATION

Evaluation of the Radiation Hardness of GaSbbased Laser Diodes for Space Applications

Posted by doEEEt Media Group
On February 12, 2020
0

The study is focused on the effects of radiation on the Power-Current, Current-Voltage and Wavelength-Current-Temperature characteristics of the lasers. No significant radiation damage has been found.

ALTER Projects

ITER – F4E

Posted by doEEEt Media Group
On January 14, 2020
0

ITER will be the first fusion device to produce net energy and to maintain fusion for long periods of time. It will also be the first fusion device to test the integrated technologies, materials, and physics regimes necessary for the commercial production of fusion-based electricity.

INSPECTION, ELECTRICAL & VERIFICATION, TESTING

Different types of Corrosion / Contamination in Crimped Connectors

Posted by Francisco Javier Aparicio Rebollo
On March 14, 2019
0

Crimped connectors are gas-tight junctions ideally protected against environmental contaminants and corrosive agents. Nonetheless inappropriate crimping and inherent connector and wire defects reduce this protection. Thus, depending of the storage atmosphere, non-conducting corrosion products can be formed, or stress corrosion cracking can be eventually induced. The former act as insolation layer that reduces the connector conductivity and both corrosion effects are identified as critical factors involved in common fails reported for electrical connectors.

INSPECTION, ELECTRICAL & VERIFICATION, PHYSICAL, MECHANICAL & ASSEMBLY, TESTING

Reasons to do an Element Evaluation Procedure of EEE Parts

Posted by doEEEt Media Group
On March 14, 2019
1

Element evaluation is performed on a sample of randomly selected parts from a production lot, (if die, they are assembled into packages). These parts are then subjected to a series of tests selected to verify the reliability of the parts (Electrical, screening, environmental, endurance and mechanical tests) and the production lot from which they originated. The Element Evaluation is performed to show that the parts performance, materials and manufacturing processes are able to meet their specified electrical, mechanical and physical performance characteristics for which they were designed-and as a result, their suitability for use in the application in which they are intended to be used.

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