Tony,

I went through an exercise with my previous company about 18 months ago. We
tried around 15 or so different no-clean flux pens (including the Kester one
you quote). Nearly all suffered to varying degrees with white residues.
There was one which stood out from the rest and also performed well in
environmental testing. It was a Qualitek "no-clean rework wand".

For more info contact Imy Nuseeb, Development Manager at Qualitek in the UK.
e-mail: [log in to unmask] or Tel +44(0)151 334 0888.

Best regards,

Martin Christie


-----Original Message-----
From: Tony Conlon [mailto:[log in to unmask]]
Sent: 13 June 2001 14:36
To: [log in to unmask]
Subject: [TN] A solution to white residues after smt rework ...


We're using:
   Kester #186 Flux Pen
   Microcares Vericlean (applied from aerosol can thru a hand-held brush)

All our material is surface mount, no bga's,
We run a no-clean process ...

Problem: We clean after repair/rework for cosmetic reasons ... the cleaner
we are using leaves a trace amount of white residue behind ...

I have also tried Multicores Mini-Fluxers & Mini-Cleaner ... less residue
... non-consistant ... not 100% satisfied.

Does anyone have a tried and trusted system?
Regards,
Tony.

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