[PCB_FORUM] Re: RoHS and PCB Re-Work

And presumably if you remove the existing solder from the pads before
placing the part, then you won't really be mixing a significant quantity of
different lead free alloys.

Tom
Arira Design, Inc.
408-844-8433 x112 


-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Tom Robinson
Sent: Friday, April 28, 2006 11:06 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: RoHS and PCB Re-Work

Hi Jeff:

I will use a new soldering iron tip, a roll of lead-free solder, compliant
no-clean flux and compliant spray flux remover and compliant solder braid.

If I have to change a smt 0805 resistor and the assy. is RoHS than I will
have to buy a RoHS Lead-Free replacement resistor.

The name of the game here is "due diligence".

tr :)


-----Original Message-----
From: Jeff McKnight [mailto:jeff@xxxxxxxxxxxxxxx]
Sent: Friday, April 28, 2006 11:24 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] RoHS and PCB Re-Work


Hello All,
The question here has come up about what to do with repair or re-work of
RoHS compliant PCBs.  After doing some research, it appears that the 
consequences
of using one solder composition in manufacturing and another in repair 
and re-work are
unknown.  It is believed that mixing lead free alloys can lead to 
unreliable solder joints. 
Do any of you have any comments ?  How are you handling this situation ?
Thanks,
Jeff

-- 
Jeff McKnight
Engineering Manager

Athens Technical Specialists, Inc.
8157 U.S. Route 50
Athens, Ohio
45701-9303

740.592.2874
FAX.594.2875

www.atsi-tester.com

visit ATSI's online shop:
www.atsi-tester.com/shop/ 

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