LISTSERV - TGASIA Archives - LISTSERV.IPC.ORG

TGASIA Archives

December 2010

TGAsia@IPC.ORG

	LISTSERV Archives
	TGASIA Home
	TGASIA December 2010

	Log In
	Register

	Subscribe or Unsubscribe

	Search Archives

Options:	Use Monospaced Font Show Text Part by Default Show All Mail Headers
Message:	[<< First] [< Prev] [Next >] [Last >>]
Topic:	[<< First] [< Prev] [Next >] [Last >>]
Author:	[<< First] [< Prev] [Next >] [Last >>]

Subject:	Re: Consultation
From:	David Bergman <[log in to unmask]>
Reply To:	Asia Committe Task Group Forum <[log in to unmask]>, David Bergman <[log in to unmask]>
Date:	Thu, 23 Dec 2010 12:32:14 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (54 lines)

Hi Justin,

It is really hard to tell what is being shown in the picture.  It seems that there isn’t breakout at all, only tangency, but that most of the annular ring is etched away.  Is there a better image available?

Best regards,
Dave

David W. Bergman   大山人
Vice President, International Relations
IPC - Association Connecting Electronics Industries
3000 Lakeside Drive Suite 309S Bannockburn, IL 60015-1249 USA
+1 847-597-2840 tel
+1 847-615-5640 fax
+1 847-867-1388 mobile
[log in to unmask]
Skype: davidbergmanipc
www.ipc.org

From: TGAsia [mailto:[log in to unmask]] On Behalf Of Justin Wu
Sent: Thursday, December 23, 2010 3:59 AM
To: Listserv TGAsia
Subject: Re: [TGAsia] Consultation

Hi All,

We found the PCB with external annular ring too tin and measured the annular ring width is 0.0361mm/0.0464mm (Remark: The width of the annular ring as per design is 0.265mm). Therefore, I believed that they are should be rejected as is. However the PCB supplier thinks they are should be conform to IPC-A-600 standard clause 2.10.4 External Annular Ring - Unsupported Holes class 2.
1). 90 degree breakout is allowed.
2). If breakout occurs at the conductor to land junction area, the conductor is not reduced by more than 20% of the minimum conductor width specified on the Engineering drawing or production master nominal.
[cid:[log in to unmask]]
Therefore, would you please kindly share in your experience for me?

Thanks in advance!

Best regards,
Justin Wu
Utilux South China Ltd
Phone: +86-755-2850 7521
Fax:    +86-755-2850 0927
E-mail Address: [log in to unmask]<mailto:[log in to unmask]>




__________ Information from ESET NOD32 Antivirus, version of virus signature database 5726 (20101222) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________

ATOM RSS1 RSS2

LISTSERV.IPC.ORG