Full Feature hold notice, exposed copper at board edge.

Do you have a question on how to simplify the PCB manufacturing process? Ask our experts.

Moderator: Sunstone Moderators



Full Feature hold notice, exposed copper at board edge.

Postby Bob Tise » Tue Oct 09, 2012 11:34 am

A very high percentage of orders are placed on hold due to insufficient board edge to copper clearance.

We care about exposed copper at the board edge for a couple of reasons.
[*]Copper can tear when it is routed, leaving strings that can short to adjacent layers.
[*]Exposed copper can wick solder in a wave solder process, causing shorts at assembly.
[*]Exposed copper at the board edge can make contact with your product chassis, causing a short to ground and/or risk of electrical shock.

You can avoid having your order stop for this defect condition by meeting the following minimum clearance guidelines:

Copper features on outer layer .010” from board edge

Copper features on inner layer .020” from board edge

Copper features on v-score board .030” from board edge

Copper features .010” from edge of cutout, on outer layers

Copper features .020” from edge of cutout, on inner layers

For details of Sunstone Circuits commercial standards and capabilities please refer to our website;
PCB Manufacturing Capabilities
Bob Tise
Sunstone Circuits
13626 S. Freeman Road
Mulino, OR 97042
Phone: 800-228-8198
Fax: 503-829-6657
Bob Tise
 
Posts: 8
Joined: Thu Sep 01, 2011 12:00 am



Return to PCB Manufacturing Topics

Who is online

Users browsing this forum: No registered users and 2 guests