Electronics Forum: expired shelf life on osp (Page 1 of 1)

Regarding OSP PCBA shelf life.This is based on the thread (#73465 PCB SHELF LIFE AFTER FIRST REFLOW | 9 February, 2015)

Electronics Forum | Wed Dec 06 09:09:54 EST 2017 | davef

Suppliers have improved the utility and quality of OSP [organic solderability preservative] solderable surface protection over the years. Be cautious reading too much into older SMTnet [and web in general] conversations about handling OSP. When prop

Regarding OSP PCBA shelf life.This is based on the thread (#73465 PCB SHELF LIFE AFTER FIRST REFLOW | 9 February, 2015)

Electronics Forum | Thu Nov 30 00:41:23 EST 2017 | abhilash4788

Dear All, I have OSP finsh pcb on my production, the pcb thickness is 1.5mm and the product is one sideded pcba. After reflow process, Is there any specific time frame defined for smt completed OSP finish pcba before going for wave soldering proce

Can an Expired OSP PCB more than 1 year be reworked to extend Shelf Life

Electronics Forum | Tue Dec 12 19:57:56 EST 2017 | myke03o

Hi Experts. We have an expired OSP pcb and we wanted to extend the shelp life. Is it possible to rework the PCB by removing the OSP coating, micro etching and re-applying OSP finish. Any advice if this can be done? Any solution for this OSP pcb e

Info on OSP PCB�s

Electronics Forum | Fri Jun 01 12:23:22 EDT 2001 | medernach

I've had good and bad experiences with OSP's. First of all, ask yourself, "Why use an OSP?" If you don't need it, don't use it. Solderability is dependent upon the number of thermal passes (the fewer, the better), the thickness of the coating, the

Info on OSP PCB�s

Electronics Forum | Tue Jun 05 21:14:10 EDT 2001 | davef

You aren't going to post our stuff on your "Hey, I'm the wizard site", are you? Board fab, Pad coatings, OSP 1 OSPs: Imidazole (Via Systems) is good. Entek (Enthone) works, but requires strict thickness control in fab. 2 Enthone CU56 allows one t

Can an Expired OSP PCB more than 1 year be reworked to extend Shelf Life

Electronics Forum | Wed Feb 14 15:54:18 EST 2018 | cbart

do you see signs of contamination or oxidation? if not why not just send them to the board house and have another OSP coating layer applied?

Re: silver finishes on pcbs

Electronics Forum | Thu Dec 14 10:14:04 EST 2000 | PeteB

Jacqueline, Asuming you mean immersion silver: Advantages - Very flat finish compared to HASL, more easily solderable than bare copper with OSP and more process tolerant than this in our experience, reasonable shelf life, cheaper than immersion gol

Re: Tin-Lead thickness on PWB's

Electronics Forum | Mon May 18 20:57:06 EDT 1998 | Earl Moon

.025" pitch so the only problem we run into is too much HASL on the adhesive side causing improper glue dispense. | As Earl keeps saying HASL thickness is hard to impossible to control. I think we need to look hard at OSP's again but then you get in

Re: Tin-Lead thickness on PWB's

Electronics Forum | Mon May 18 22:54:04 EDT 1998 | Dave F

.025" pitch so the only problem we run into is too much HASL on the adhesive side causing improper glue dispense. | | As Earl keeps saying HASL thickness is hard to impossible to control. I think we need to look hard at OSP's again but then you get

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