5 Jun
2006
5 Jun
'06
5:52 p.m.
On 6/5/2006 at 6:11 PM Jim Beacon wrote:
Remember all those "I reseated the chips in their
sockets and it worked"
posts you've seen on this list!
Most folks think that the machine-pin sockets are the very best. I thought
so too, until putting a piece of equipment on a shake table convinced me
otherwise. If you want to withstand G forces, the better sockets to use
for DIPs are the flat spring contact type that seat the DIP in sort of a
"well" and make contact over the entire outside surface of the DIP pin. I
can dig out the Augat part number, if anyone's really interested. Another
not-so-obvious conclusion is that we found almost no difference vis-a-vis
corrosion between the tinned and gold-plated versions when socketing a
tinned-lead DIP when doing elevated temp and humidity tests.
At least that's how it was 25 years ago.
I haven't seen the DIP sockets with built-in decoupling caps for some time.
I suppose it dawned on somemone eventually how difficult things get when
the cap in those things fails.
Cheers,
Chuck