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PCB shelf life control for different surface finishes
HASL/ HASL Lead free 12months
ENIG 12months
Immersion Tin 6 months
Immersion Silver 6 months
OSP 6 months
The...
Dear friends,
Thermoelectric separation technology was developed because of the requirement of extremely long service life for high power LED products , it can be also named Sinkpads or Direct thermal path technology.
Why choose thermoelectric separation technology?
1.Most economical direct...
firstly , IPC 600 and 6012 define twist and bow on bare PCB should be controlled within 0.75%. so it didn't mean slight twist and bow are the reason of rejection.
there are four factors which may cause twist and bow .
1. PCB design , copper distribution on layers are not symmetrical , normally...
PCB plant support PCB size 1500mm*520mm.
Dear friends,
Our factory was equipped big size machines including exposure machine (cover area 1.8mm),E-test machine and vacuum packing machine, which made us to be capable of fabricating PCB with size 1500mm*580mm from August 2016.
So if you want to...
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