You may be able to limit wicking by control of solder volume through use of a properly sized solder preform.   

Dick Krug, SSBB, CSMTPE
SMT Process Engineer
Sparton Corporation
30167 Power Line Road
Brooksville, FL  34602-8299
p (352) 540-4012  (Internal Ext. 2012)
[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gregg Owens
Sent: Friday, August 19, 2011 1:40 PM
To: [log in to unmask]
Subject: [TN] Solder Wicking

Technetters:

I have a unique application question. We have a part which is to be attached to the PCB by a wire. The wire is stranded 22AWG and is only 450 mils long. The assembly's operational environment has vibration. Therefore it is critical for the wire to minimize solder wicking and remain as flexible as possible. However the short length presents quite a challenge. So other than a anti-wicking tool does anyone have any great ideas to limit solder wicking in such an application?

I was thinking of suggesting using un-fluxed solder wick to improve flexibility. Any additional thoughts? Thanks!

Gregg Owens
Wavestream Corporation


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