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 | 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 | Tue Jul 10 13:01:02 EDT 2018 | john22hendy
Looking for any Preventative maintenance steps for SMD storage towers. The MyCronics Owners manual does not specify PM suggestions, however proper vacuuming, lubrication and lens cleaning is necessary. Does anyone have other items to suggest or a li
Electronics Forum | Wed Aug 11 06:27:07 EDT 2021 | danisa
Hi all, The PCBA was swollen after SMD It is hard PCBA with 6 layers and SMD both sides Defect rate: ~ 5% Phenomenon: swell at the same side, same position (at 2 IC positions). Did not find any abnormality in SMD process as well as storage condition.
Electronics Forum | Wed Feb 09 07:04:08 EST 2000 | Jacqueline Coia
Could anyone please tell me the recommended guidelines regarding the max. time and the storage environment for complete (plastic blister tape) SMD reeled components before being used. This is before any associated quality problems occur during assemb
Electronics Forum | Mon Dec 22 12:49:19 EST 2003 | Marc Simmel
The boards are vacuum packed in quantities of 50 pieces and used within an hour or two of opening; no nitrogen storage. The boards are processed in a double-sided smd process.
Electronics Forum | Fri May 09 09:09:22 EDT 2003 | fmonette
Phil, here is why "dry cabinet storage may not stop the clock" : The moisture diffusion inside a component is actually quite complex. When previously exposed components are returned to dry storage, the moisture gradient that is already absorbed in
Electronics Forum | Wed Feb 08 11:46:19 EST 2023 | tommy_magyar
Yes, your statement is correct. J-STD-033B.1 section 5.3.3.2 SMD packages not sealed in a MBB may be placed in a dry atmosphere cabinet, maintained at not greater than 5% RH. Storage in these dry cabinets may be considered equivalent to storage in a
Electronics Forum | Fri Feb 10 05:34:55 EST 2023 | ysundar71
Thanks for the comments. As per D Revision of J STD033, clause 5.3.3.2: Dry cabinet at 5% RH SMD packages not sealed in a MBB may be placed in a dry atmosphere cabinet, maintained at not greater than 5% RH. Storage in these dry cabinets may be consid
Electronics Forum | Tue Feb 07 05:40:16 EST 2006 | pavel_murtishev
Good day, J-STD-033A: 4.1.2.2 Moisture Sensitivity Levels 5-5a For moisture sensitivity Levels 5 and 5a with floor life exposure not greater than 8 hours, a minimum desiccating period of 10X the exposure time is required to dry the SMD packages en
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