True-Position of +/-.005" on all layers should be attainable on standard
builds/materials.  Blind and Buried interconnect variations and hybrid
packages may have differing process latitudes needing more tolerance.

Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED 
           76 Technology Drive - POB 1890 
              Brattleboro, Vermont 05302
                Voice - 802.257.4571 ext 37 
                    Fax - 802.257.0011
                       <http://www.vtcircuits.com/> 
                           
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Pulis
Sent: Wednesday, January 25, 2006 7:17 AM
To: [log in to unmask]
Subject: [TN] Soldermask Tolerance

hi all,

does anyone know if there's a standard which specifies the maximum
allowable
soldermask shift for non-soldermask defined pads.


regards

> Brian Pulis
> Process Engineer
>
> Dedicated Micros Malta Ltd.
> UB2, San Gwann Industrial Estate,
> SGN 09. MALTA.
>
> Tel: (+356)23819 187/199
>
> Fax: (+356)23819 100
>
>

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