Not sure what that dark material is, Guy...the X-Ray image I've added to
the photos seems unremarkable.

John


-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]] 
Sent: Thursday, December 29, 2011 11:14 AM
To: 'TechNet E-Mail Forum'; John Balchunas
Subject: RE: [TN] Soldermask, Receiving Inspection Photos

I don't think they are acceptable. Many of the photos to demonstrate a
condition described as a process indicator per section 10.7.2 of
IPC-A-610E.
bd7 12-15-11 looks like it might be a defect per 10.7.3, a breakdown of
the mask with metal inclusions. 
I agree with Brian, the whys are more troubling than the images. What is
the dark material running along the track under the mask on bd6? 
Guy

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of John Balchunas
Sent: Thursday, December 29, 2011 10:05 AM
To: [log in to unmask]
Subject: [TN] Soldermask, Receiving Inspection Photos

Greetings, and Thank you for your Counsel in the past.

 

What I bring before you today are some photos of Soldermask from some
PWBs in the as-received condition from the Supplier, and I would like to
hear what you have to say as to their Conformance to IPC Class 2
Requirements.  It will provide the feedback I need to assess my own
understanding of the criteria in IPC-A-600G and IPC-A-610E.

 

The photos are in my Soldermask, Receiving Inspection Photos Gallery at
the TechNet Group Site:

 

http://ipc-technet.groupsite.com/gallery/22209?page=1

 

Thanks again for your help with this.

 

John Balchunas

Supplier Quality Engineer

Email: [log in to unmask] <mailto:[log in to unmask]> 

Tel: 763-278-2249

Fax: 763-767-4635

 

 


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