I doubt you can damage the IC as the DMM ohmmeter voltage is low.
I just use a microscope or magnifying glass to inspect the joints after
soldering. But DO use the flux! Much easier. I carry solder to the joint
on the iron. Oh yeah, I can hear my buddies! But with flux, it works well.
I do the work with a head band magnifier. At my age, 72, hand does not
shake too badly! I do all SMD but no smaller than 0805.
There are some neat microscope/cameras on Ebay for about $30. They work
great!
Best wishes. You should do just fine.
Larry
From: Electronics_101@yahoogroups.com
[mailto:Electronics_101@yahoogroups.com] On Behalf Of Banibrata Dutta
Sent: Sunday, December 02, 2012 9:30 AM
To: Electronics_101@yahoogroups.com
Subject: [Electronics_101] DMM, continuity test - on soldered uC
Planning to do my first, at home SMD soldering, of a TQFP 64 uC, on a
breakout board. Will be trying the extra flux + drag soldering technique,
based on couple of videos I've seen.
Wanted to check if it is okay to check for good solder contacts, by doing
the standard DMM continuity test between the uC pins, and the corresponding
breakout board header pin ? Or can it damage the IC in some way ?
cheers,
BD
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