I bet that is quite a bit more than 2 Canadian cents! Ahne. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Yuan-chia Joyce Koo Sent: Friday, September 5, 2014 10:04 AM To: [log in to unmask] Subject: Re: [TN] EXTERNAL: Re: [TN] NOT Recognizing Panel Fiducials at paste printer. you might want to explore to add a color LED for illumination. try a battery powered one and see if it gets better (angle illumination). my 2 cents. jk On Sep 5, 2014, at 12:00 PM, Gumpert, Ben wrote: > I've seen this problem from time to time, and it can be a real > headache. > It seems like the fiducials are just the right size for this to be a > problem with the HASL finish. > > Has anyone tried a different size fiducial, or different shape/ > pattern that might not have the same problem? > (Although I'm sure anything different would cause problems with a lot > of equipment.) > > Ben > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey > Sent: Friday, September 05, 2014 11:34 AM > To: [log in to unmask] > Subject: EXTERNAL: Re: [TN] NOT Recognizing Panel Fiducials at paste > printer. > > In my experience, the copper, without HASL is worse than the HASL, for > those old printers and placers. > We resorted to machine eraser. > http://www.dickblick.com/products/sakura-cordless-electric-eraser/ > We cleaned the board fiducials at receiving inspection. > > Gold will be more repeatable but I would think a switch from HASL to > ENIG would be a major change. If it is a real simple design and HASL > has good yields, I would expect ENIG to introduce more problems than > it solves. It did in my case. We probably could have resolved the > soldering problems by tweaking the reflow and wave settings. But, we > went back to HASL. The buyer and the plant manager made the call. > > Immersion tin and immersion silver change color too. I bet your > machines would have trouble with it. My experience with this problem > dates back to the age of your old printers. Immersion Tin and Silver > have been greatly improved since then. > > Wish I could be more help. > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Jim West > Sent: Friday, September 05, 2014 9:47 AM > To: [log in to unmask] > Subject: Re: [TN] NOT Recognizing Panel Fiducials at paste printer. > > Thanks for the replies. We build many thousands of this board so I > was looking for a more permanent suggestion to give our board > supplier. My thought was having the board supplier NOT apply solder > (HASL) to the fiducials. Is this possible? Any other suggestion for a > more permanent solution that our board house could implement without > major changes (i.e. > Immersion tin, or gold....). Major change would require an older > board going through customer approval. > > Best Regards, > Jim > > > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan TEMPEA > Sent: Friday, September 05, 2014 7:52 AM > To: [log in to unmask] > Subject: Re: [TN] NOT Recognizing Panel Fiducials at paste printer. > > Jim, > > Removing the solder from the fiducials, using a solder wick, normally > takes care of the issue. > > Regards, > > Ioan Tempea, P. Eng. > Manufacturing Engineer > Satellite Systems > MDA > 21025 TransCanada Highway > Ste-Anne-de-Bellevue, Qc, Canada H9X 3R2 > Tel: +1-514-457-2150-3556 > www.mdacorporation.com > > This e-mail, and any attachments, are intended solely for the use of > the intended recipient(s) and may contain legally privileged, > proprietary and/or confidential information. Any use, disclosure, > dissemination, distribution or copying of this e-mail and any > attachments for any purposes that have not been specifically > authorized by the sender is strictly prohibited. If you are not the > intended recipient, please immediately notify the sender by reply e- > mail and permanently delete all copies and attachments. > > -----Message d'origine----- > De : TechNet [mailto:[log in to unmask]] De la part de Stephen Gregory > Envoyé : > Thursday, September 04, 2014 4:29 PM À : [log in to unmask] Objet : > Re: [TN] NOT Recognizing Panel Fiducials at paste printer. > > Hi Jim, > > An old trick that I've used many times when the camera doesn't > recognize a fiducial is to take a pencil eraser to it... > > Steve > > Sent from my BlackBerry 10 smartphone. > Original Message > From: Jim West > Sent: Thursday, September 4, 2014 2:05 PM > To: [log in to unmask] > Reply To: TechNet E-Mail Forum > Subject: [TN] NOT Recognizing Panel Fiducials at paste printer. > > Our paste printers are having difficulty recognizing the fiducials on > an older board that has been running for years. The board house is > applying HASL and because of that, as most are aware, the solder > covering the fiducial pad will be inconsistent. I'm told that this has > been an ongoing issue and the problem comes and goes. > We have three printers that are older that do not allow us to adjust > the lighting. > > I can't remember if we can have the board house apply HASL on just the > component pads and not the fiducials? Any other suggestions? > > Thanks, > Jim > > > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > -- > > > This email and any attachments are only for use by the intended > recipient(s) and may contain legally privileged, confidential, > proprietary or otherwise private information. Any unauthorized use, > reproduction, dissemination, distribution or other disclosure of the > contents of this e-mail or its attachments is strictly prohibited. If > you have received this email in error, please notify the sender > immediately and delete the original. > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud > service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. 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