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
     [log in to unmask]



______________________________ 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
 [log in to unmask]


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