Ramon,
We use Mouse Bites that are to the inside unless the circuitry does not permit us (< or = .050" then the teeth go to the middle with a slight design change), but other than that they are all on the inside close to the card. It is also important that the design is such that the board remain rigid during processing, but not so rigid that it is difficult to depanel, thus causing damage. Also because of the design we do not have to do any other finish touches, such as sanding or other to ensure the edges are smooth. We use a Pneumatic Depaneling machine to depanel all of our boards so this also helps minimize damage to the circuit card because it cleanly cuts both edges without chipping and keeping nice smooth edges.
There is my .0024 cents worth...
Chris Schaefer
Suntron Corporation
Process Engineer
540 N. Rogers Road
Olathe, Kansas 66062
913.393.5878
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Jerry Dengler
Sent: Thursday, September 15, 2005 1:49 PM
To: [log in to unmask]
Subject: Re: [TN] Mouse Bites
Ramon,
Mouse bites in the middle of the break away tabs are hard on operators
hands after de-panelization.
They may interfere with board mounting.
They look bad on the finished board.
Other than these points they can work fine.
Jerry Dengler
Production Manager
Pergamon Corporation
PH: 610-239-0721
Fax: 610-239-0720
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: Thursday, September 15, 2005 2:37 PM
To: [log in to unmask]
Subject: [TN] Mouse Bites
Hi Technetters:
Panelized boards are connected through mouse bites to the break
away tabs. It is my understanding and I see the reason for the mouse
bites to be close to the board. Does anybody out there have experience
with mouse bites placed in the middle, between the boards and the tabs,
or close to the break away tab? The material used is FR4.
Regards,
Ramon
Note: On a post a few weeks ago about dry boards. I found out
that there are two types of dry board markers regular and low odor
markers and two types of dry boards. Low odor markers are the new type
available and stay on the old type of dry boards( hard to erase). The
new type of boards are sleeker. The solution I found out was to go to
Home Depot and buy a 4' X 8' dry board sheet for $9.95 and replace the
old board with the new by using the old frame and it works.
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