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RE: [N8VEM-S100:370] What DIP sockets to use in building boards


This kind of information should be on the forum.

I think a lot of the original S-100 board producers soldered the ICs in to save money and avoid problems.


-----Original Message-----
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Bill Lewis
Sent: Saturday, July 30, 2011 5:55 AM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:370] What DIP sockets to use in building boards

Connectors are generally the most failure prone components
in electronics.

The most reliable way to mount ICs is to solder them in.

I know people in this group are constantly playing musical
chairs with their ICs, between 74LS, ALS, 74F, HCT, etc. trying
things out.  So sockets are still called for.

But don't skimp on socket quality.  It is a false economy.


On 7/30/2011 4:33 AM, Douglas Goodall wrote:
> Now I am wondering if my desire to be conservative and socket everything,
> coupled with being new to the socket sourcing business has combined to
> contribute to the general flaky behavior some (many) of my boards have
> exhibited.
> During debugging I have experienced a situation where the pin on the other
> side of the board doesn't have continuity with the pin of the chip in the socket,
> and I assumed it was iffy soldering, but it could have been lousy sockets.
> I guess I will try Jack's suggestion (Phoenix Ent) in hopes that these problems
> will go away. If the sockets are the source of my troubles, the money saved
> isn't worth the trouble.
> Douglas
> On Jul 29, 2011, at 11:04 PM, Nick Papadonis wrote:
>> I ordered some inexpensive non-machined sockets from China on Ebay.
>> This occurred before I knew anything about socket quality.  They were
>> pretty much junk and their price said it all.  The IC barely held into
>> the socket.  They can't be used for socket in socket adapters because
>> the pins pop out.  I prefer the machined sockets even though they are
>> more expensive.  They are better constructed.