Steve,
Not that is was your concern, seeing as he only gave you two samples to work
with, but I wonder if your customer did any cross-sectioning to see if he
got good connections that didn't do any damage to the barrel and attached
inner layers, after he did his electrical testing.
regards,
Bev Christian
Nortel
> ----------
> From: Stephen R. Gregory[SMTP:[log in to unmask]]
> Sent: Sunday, November 01, 1998 2:22 PM
> To: [log in to unmask]
> Subject: [TN] Assy: Low quantity Press-fit connector tip...
>
> Hi All!
>
> This is a tip I discovered yesterday that works so good I thought I'd
> share it with ya'll. We had a customer show up Friday afternoon that
> needed
> two prototypes built ASAP (don't they all)?.
>
> Feeling kinda' generous, or greedy (depends on your point of view),
> we
> said we'd do em' and they could have them back on Monday morning.
>
> I went ahead and hand placed them since the most of the material for
> the
> boards were engineering samples (strips, loose parts, etc.), but the one
> fly
> in the ointment with these boards, was that they used a right angle
> press-fit
> connector on them. It goes without saying that I wouldn't have any proper
> tooling for the connectors, but I came up with a way to press them in
> without
> tooling and it works GREAT!
>
> These were shielded ERNI connectors, about three inches or so long,
> six
> rows of leads, right angle female types.
>
> I've got a manual arbor press, but not the support tooling for the
> connector. So what I did was to manually place the connector in the holes
> and
> get the tips of the leads to protrude just a bit out the backside (you
> should
> be able to do this if the lead length is spec'd right). Then I took
> another
> connector and placed the hole openings over the lead tips matching it
> position-wise to cover all the leads, and used that connector as my
> "anvil" to
> press the board onto the connector, which is backwards from what we do
> normally.
>
> So basically, I had the board "sandwiched" between two connectors
> when I
> put it beneath the arbor press head. The one connector on the bottom was
> the
> one being installed into the board, then you have the PCB, and then the
> "anvil" connector whose hole spacing is an exact match and distributes the
> pressure equally, and supports the laminate around the holes to press the
> PCB
> onto the pins...it doesn't hurt the "anvil" connector either!
>
> You wouldn't want to have to do a bunch this way, and this only will
> work
> with right angle connectors, but in a pinch this works great!
>
> -Steve Gregory-
>
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