14 Jan
2017
14 Jan
'17
10:53 a.m.
On 01/14/2017 12:07 PM, Paul Koning wrote:
Before the second project, I inherited a microscope
like
the one you showed, which I used for inspection. And for a
few bits of rework. I found it hard to get the hand-eye
coordination correct working through the microscope, so I
didn't use it for assembly. If I had to (even finer work)
I'd have to learn that skill; obviously it can be done but
it didn't come naturally and so far it wasn't needed. paul
I've done
thousands of chips using a microscope. Anything
down to SOIC size (1.27mm lead pitch) I can do quite nicely
without aids. But, SSOP and the big flat packs benefit
greatly from magnification. A steady table, so the
microscope doesn't bounce is quite important, too. I've
done down to 0.4mm lead pitch on some chips that are beyond
the capability of our P&P machine by hand with the microscope.
Jon