Electronics Forum | Tue Dec 28 03:59:06 EST 2010 | riscy00
I'm investigating heat transfer by 1st order approximation between PCB and ambient air via encapsulate material (epoxy or gel or silicone), they have thermal conductivity of 0.2W/C but it hard to find specific heat capacity and density. Has anyone
Electronics Forum | Fri Jun 06 16:11:25 EDT 2003 | RF Lurker
I understand that there may not be a lot of material on this, as most threads I've seen discourage doing it. It goes against DFM to do it. But I wish to use a large copper area instead of heat sink and thermal epoxy to cool a regulator. But I can'
Electronics Forum | Mon Feb 05 10:21:21 EST 2007 | davef
Thermal conductivity [W/m-�C] * Silver: 418 * Aluminum: 403 * Copper [rolled annealed]: 392 * Copper [electrodeposited]: 392 * Gold: 297 * Nickel: 90.7 * Tin: 73 * SAC: 73 * Castin: 57 * Pb37Sn63: 51 * Lead: 35 * Epoxy, phenolic: 25-75 * Conformal co
Electronics Forum | Mon Jun 07 10:57:31 EDT 1999 | Dave F
| | | | Where I can find some informations about repairing of SMT boards? | | | | | | | | Thanks | | | | | | | | Marcos | | | | | | | A first place to start is IPC's 7711 and 7721 encompasing repair, modification, and rework procedures. | | | |
Electronics Forum | Tue Jan 16 18:18:46 EST 2007 | greg york
Sorry that answer never really gave you the reason and ways to resolve. Reason - most composite pallets are only good up to 180C so thermal excursions at 250 or even 270c lead free kill them. Try to stay on top of cleaning as well and some pallet mat
Electronics Forum | Fri May 12 07:53:40 EDT 2006 | egrice1
Sheldon, Tip life is directly related to temperature, IRON plating thickness on the tip, Alloy composition used and operator technique. High tin contents in lead free alloys attach the tips. Poor wetting and higher melting temperatures cause us
Electronics Forum | Mon Aug 25 12:43:35 EDT 2014 | freddimock
Numerous people use the Pyramax oven to process high temp solder but your success will depend upon the mass of your board. To maximize the probability of success you should use the highest convection rate (IWC) possible to enhance heat transfer an
Electronics Forum | Mon Oct 26 02:00:36 EDT 2020 | chucherry5076
https://www.jrpanel.com/R The heat generated by electronic equipment causes the internal temperature to rise rapidly. If the heat is not dissipated in time, the equipment will continue to heat up and the components will overheat and fail, resulting
Electronics Forum | Wed Nov 01 22:58:31 EST 2006 | davef
Durastone is commonly used in flooring. Durostone is a proprietary product of R�chling Permali Composites SA [be aware this is a French company] that many use for reflow and SMT process pallets. Suppliers are: * R�chling Permali Composites SA; Canog
Electronics Forum | Tue Apr 07 14:37:14 EDT 1998 | Chrys
Be careful about the material you choose. All the materials out there are basically glass-filled epoxy composites, but they are different blends with different fillers. Some of them have carbon in the matrix to make them ESD safe, but it also short
