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HI Jan
Most bend/form die sets do NOT use oil. If there is oil, this may be due to
a leak in the hydraulic piston. Check with your supplier on this. I have
tested on some parts affected by this before for solderability (Mil-Std)
and found it to pass. You probably can remove this using IPA.
Next thing to check is the trays/tubes that are used to contain these
parts. We have experienced some 'bleeding' of the
antistatic/static-dissipative coating that leads a oily appearance on the
package body. This has also be tested not to affect solderability. Again,
IPA seems to work.
Hope this helps.
regards
Jeff-MH Tan
Hewlett Packard Singapore
Integrated Circuit Business Division
______________________________ Reply Separator _________________________________
Subject: Re: ASSY:Oil coating on components.
Author: Non-HP-ddhillma ([log in to unmask]) at HP-Singapore,uugw19
Date: 8/22/96 5:06 AM
Hi Jan - Oil on your component leads will degrade the solderability.
The level of degradation will be dependent on the type of flux you are
using - some fluxes can move/change/eliminate the oil and some fluxes
are rendered useless. The amount of time the oil stays in contact with
the component leads can be a variable also. My experience has been
that most folks use some type of cleaning step (either water or
solvent based depending on the type of oil involved) to remove the oil
contamination rather than rely on the flux to do the job.
Dave Hillman
Rockwell Collins
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______________________________ Reply Separator _________________________________
Subject: ASSY:Oil coating on components.
Author: [log in to unmask] at ccmgw1
Date: 8/16/96 6:51 AM
Technetters,
I'm just curious about the affect on component solderability after used
a bend&cut machine. I suspect some kind of lubricant coating after using
these machines on our components. The machines need this to operate
properly.
Is there any other kind of lubricant or some other solution to this?
How does oil affect the solderability?
Is there any low-cost way to remove this oil before wave soldering
without much time loss?
I'm greatful for anykind of info.
/Jan Merstrand
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