Electronics Forum: pcb and shelf and life and after and reflow (Page 1 of 1)

OSP PCB Shelf life and part packs

Electronics Forum | Wed Sep 26 10:05:41 EDT 2012 | testbloke

Although we do not have any soldering issues with our OSP PCB's, I am trying to establish clear rules with regards pcb storage and shelf life. Our PCB's are supplied in metalised moisture barrier bags but without desicant, our current rules as follow

CuOSP and IMM Silver versus HASL

Electronics Forum | Thu Aug 31 12:17:56 EDT 2000 | mike weekes

We are considering alternative Board Finishes to our existing HASL process. The HASL effects opens on 25 and 20 mil packages after reflow and we know if the advantages of CuOSP and other alternatives. OUR Concern: Is there a shelf life and handlin

Pick and Place Startup - LQPF100 bridging issues

Electronics Forum | Wed Mar 24 23:12:48 EDT 2021 | grahamcooper22

0.66 area aspect ratio...so for example...if the device is 0.5mm pitch QFP, the pcb pad may be 12 thou wide..make the aperture 9 to 10 thou wide...and reduce it's length by 10 % overall compared to the pcb pad.... Depending on device pitch, select ap

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