On Fri, 13 Feb 2004 21:41:00 -0600, Mike Hord wrote:

>...<

> I don't like the RJ-11 jack.  It's bulky and hard to use with breadboards.
>
> So far, so good.  I don't know for sure if I would ever design a product around the SIP header, though,
because there's got to be a good reason they choose to use the RJ-11.
>
> Anyone know why?

Well off the top of my head:
It's easier to incorporate into the "Hockey puck" design of the ICD2 - a SIP header would be awkward and would
have to exit the flat top/bottom, rather than radially, and it would be hidden inside an awkward rectangular
hole;
it's a consumer-grade connector, gold-plated, and strain-relieved, with a retention-clip, and impossible to
insert backwards or offset, so it's likely to be more reliable than SIP;
replacement cables are available everywhere, cheaply, in many different lengths - SIP-terminated cables are
pretty-much DIY, needing special crimping tools or a soldering iron to connect wires to those fiddly little
terminals;

But you're quite right about using it with breadboards - that offset pattern of PCB pins is a right pain!

Cheers,

Howard Winter
St.Albans, England

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