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Solder cream kits (flux and powder separately)

Istv�n Dominik

#4731

Solder cream kits (flux and powder separately) | 3 March, 2000

I received data sheets from a paste distributor in which Amtech gives a recipe how you can mix solder cream. They deliver the flux in plastic jars and the solderpowder in foil packages. You must mix the two components with a simple mixing tool. Has anybody heard about this? What are your opinions?

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#4732

Re: Solder cream kits (flux and powder separately) | 3 March, 2000

I have heard about it. The main reason is to save money. The problem is, or better is said, that the mixing isn�t that simple for you got have a homogen paste afterwards and the solderballs shouldn�t be deformed in size so that problems during printing occur when particles stick in your apertures. The advantage might be that you always have "fresh" paste and no problems with storage and shelf life.

M2c

Wolfgang

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dave

#4733

Re: Solder cream kits (flux and powder separately) | 5 March, 2000

We used this type of paste in a fine pitch application for over two years with no problems. You must be very careful of any (dust)or spillage while mixing for obvious reasons. In my opion the very thing that makes it interesting "freshness" is also its downfall when handling the powder/s.

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