Imagineering, Inc. | https://www.pcbnet.com/blog/fr-4-vs-rogers-material-for-manufacturing-rf-pcbs/
. Generally, high temperature PCBs should aim for a continuous thermal load that is 25°C below the glass transition temperature. Moisture Absorption Printed circuit boards are sensitive to changes in atmospheric humidity, and RF PCBs are no exception
ORION Industries | http://orionindustries.com/pdfs/frfilm.pdf
. Low moisture absorption and excellent dielectric properties make ULTEM film the superior choice for a broad range of applications including high-voltage internal insulation, high-temperature PSA tapes and speaker cones
ORION Industries | http://orionindustries.com/electronic.php
your electronic insulation. The design considerations will most likely include: Dielectric Strength Moisture absorption and dimensional stability Ease of fabrication and manufacturing tolerances Agency approvals, such as UL flame ratings Adhesive and printing compatibility
ORION Industries | http://orionindustries.com/pdfs/insulating.pdf
. Design considerations typically include: • Electrical properties • Moisture absorption and dimensional stability • Ease of fabrication and manufacturing tolerances
| https://www.eptac.com/wp-content/uploads/2021/11/webinar_eptac_09_16_09.pdf
. That is, either the environmental stress was higher than expected or the material strength was lower than expected. Pb-Free Reflow, PCB Degradation and Moisture Absorption Monday, July 20, 2009 | Kerin
| https://www.eptac.com/soldertips/issues-of-burnt-flux-on-class-3-pcb-assemblies/
won’t hurt or degrade the product if left on the boards after soldering. Fully active fluxes, if left behind, are susceptible to the absorption of moisture which is a problem when the product is in the field as the flux residues are still active and when moisture is
1st Place Machinery Inc. | http://www.firstplacemachinery.com/firstplace_comet_30_cfm_plastics_dryer.html
. Because this unique system operates in c ontinuous drying, it is able to maintain dewpoints of -50C, continuously. A closed loop circuit design eliminates the risk of moisture re-absorption and is suitable for polymer drying applications involving large quantities of hygroscopic material
| https://www.eptac.com/faqs/soldertips/soldertip/issues-of-burnt-flux-on-class-3-pcb-assemblies
won’t hurt or degrade the product if left on the boards after soldering. Fully active fluxes, if left behind, are susceptible to the absorption of moisture which is a problem when the product is in the field as the flux residues are still active and when moisture is
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