Or the land could be cut with an exacto knife and the unneeded
part of the land is removed by peeling it off using tweezers and a heat
gun.   Land (SMT)   Pad (THT).
	Ramon 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Thursday, May 17, 2007 11:19 AM
To: [log in to unmask]
Subject: Re: [TN] MELF Experiment

If you have not had too much coffee, using a scrap board, you can take a
high speed dental drill with a very small ball mill and under a
microscope mill away the periphery of the existing pads to the shape you
wish. I have done this many times in the past, it is not that hard to
do. If you bite into the PWB or masking a little bit, it does not hurt
anything.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Black, Paul
Sent: Thursday, May 17, 2007 9:28 AM
To: [log in to unmask]
Subject: [TN] MELF Experiment

Hi Everyone,

A little while ago, I asked for advise regarding a tombstoning issue
with a MELF. I received some replies and they all indicated that the
pads are probably too large. Now, I would like to run an experiment to
prove that out before changing the artwork on the board. I asked my
board fabricator if they could rework some boards by adding soldermask
to half the pad but I was told that the mask wouldn't adhere over the
Immersion Silver finish on the pad. Does anyone have a suggestion that I
could try?

Thank you,
Paul Black
Manufacturing Engineer
Kronos Incorporated

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