Electronics Forum | Thu Mar 18 18:07:21 EDT 2010 | grahamcooper22
Hi, First check what the Moisture Sensitivity Level of the LEDS is....you may need to ask the LED manufacturer. Once you've established it is moisture sensitive then follow latest version of IPC JEDEC 33 spec. for storage of them and drying them if t
Electronics Forum | Fri Mar 19 03:50:37 EDT 2010 | grahamcooper22
Some things you have to be sure of... Can you guarantee the LEDS are DRY when you receive them ? They may be packed in dry bags but when was this done and has the LED distributor had them open at his site ? Using vacuum sealed dry packs is a good way
Electronics Forum | Fri Mar 19 03:13:35 EDT 2010 | mun4o
Hi, First check what the Moisture Sensitivity > Level of the LEDS is....you may need to ask the > LED manufacturer. Once you've established it is > moisture sensitive then follow latest version of > IPC JEDEC 33 spec. for storage of them and dryi
Electronics Forum | Tue Aug 10 06:58:48 EDT 2004 | dka123
dear all, kindly guide me for the use of space electronics hardware assembky of PQFPs and Cqfps, how to form the flat pack leads, bend for 240 pins of 20 mil pitch and what are the Mil standards for them.how to cut the lead guards.can we use FP5 elit
Electronics Forum | Mon Jun 16 17:13:24 EDT 2003 | fmonette
John, Maybe you know this already but I just wanted to highlight a few facts about dry cabinets. My experience is that many engineers are not well aware of the industry guidelines and sometimes will buy a dry cabinet without understanding the key f
Electronics Forum | Wed Oct 20 10:41:22 EDT 1999 | Eric Lerz
Our company (assembler and user) has experienced some board problems relating to warpage and solderability. The manner in which they are packaged by our fabricators and stored in our stock prior to assembly has been questioned (as one of many factor
Electronics Forum | Thu Apr 12 00:56:20 EDT 2007 | Jani
Our SMT production and storage area is air-conditioned, constant temperature is maintained but the humidity is not controlled , the raw SMT material is stored in a "Drier" cabinet, but since we assemble hybrid SMT and thru-hole PCB assemblies, the SM
Electronics Forum | Sun Nov 08 17:04:26 EST 2015 | ttheis
Thank you very much for sharing this information. It is difficult to gain knowledge in this area independently. I'll contact Kester for information on adjusting the flux density and which "thinner" to use since I am using their flux. I really like
Electronics Forum | Thu Dec 03 15:30:00 EST 2015 | ttheis
We've started off with Kester 951 'no-clean' so far which is alcohol based I believe. It seems to do very well with foaming, activation and low residue, but if we can move to water based and get good results that would be great. The 951 flux and thin
Electronics Forum | Thu Apr 12 22:00:58 EDT 2007 | davef
Search the fine SMTnet Archives, for instance: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=46687