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April 2014

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Subject:
From:
lyonyuan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, lyonyuan <[log in to unmask]>
Date:
Fri, 4 Apr 2014 23:26:07 +0800
Content-Type:
text/plain
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text/plain (93 lines)
Yes, first remove all wrong component by hand, then place the correct by
HSP, final we want to reflow


Lyon yuan

-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]]
Sent: Friday, April 4, 2014 10:57 PM
To: lyonyuan; [log in to unmask]
Subject: RE: [TN] Press-fits connector

Ouch! That's the way it always is ain't it? During the times when you
unfortunately have a wrong value component, it's never the one-per, it's
always the 100-per...

So what are you thinking of doing? You still have to remove each one by
hand, and that can go pretty quick, but were you thinking of machine placing
the replacements, then reflowing the board?

Steve


-----Original Message-----
From: lyonyuan [mailto:[log in to unmask]]
Sent: Friday, April 4, 2014 8:48 AM
To: Steve Gregory; [log in to unmask]
Subject: RE: [TN] Press-fits connector

Hi Steven,

The usage is 113 pcs/unit, it's hard to rework under manual rework

Lyon yuan

-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]]
Sent: Friday, April 4, 2014 10:24 PM
To: [log in to unmask]; lyonyuan
Subject: RE: [TN] Press-fits connector

Hi Lyon,

Don't mean to ask a dumb question, but why would you want to send the whole
board through reflow to rework it for a wrong value resistor?

In my experience it's always been a manual process to rework chip components
with wrong value. Can be a PIA, but it can go pretty quick with the right
solder tip for removal. For example, here's a Metcal tip for 0402's and
0603's:

http://www.okinternational.com/Hand_Soldering_Systems/id-SMTC-596/SMTC_R
ework_Cartridge_Slot__SMTC-596


Steve


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of lyonyuan
Sent: Friday, April 4, 2014 7:03 AM
To: [log in to unmask]
Subject: [TN] Press-fits connector

Hi Guys,



Anyone to know if the material of housing of connector is LCP, if can endure
reflow process? Since we need rework some boards with wrong component for
res we don't want to remove those press fit connectors.



Lyon yuan





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