In a message dated 3/25/99 12:01:52 PM Pacific Standard Time,
[log in to unmask] writes:

>         Our board is changing from a gloss LPI solder mask to a FLAT MASK
>  LPI.
>
>          Should there be any issues to be concerned about with the flat
mask?
>
>          Thanks in advance for your help!!
>
>          Kathy Palumbo

Hi Kathy!

First I gotta' question, why? Is there some reason that you're switching?

Just askin' is all...

The one big thing that I would think about is cleanliness, whether you're no-
clean or not. Flat masks in a no-clean environment tend to pick-up more
contamination, cause there's more surface area to pick-up stuff with a flat
mask, and in a cleaning environment flat masked boards easily get those
dreadful "dishwasher spots" from cleaning, otherwise known as the generically
termed white residues which can be caused by a million things.

I guess I'm saying that it's harder to keep the boards looking good with a
flat mask...maybe it's just an esthetic preference thing....

Steve likes shiny, him likes shiny things...(GRIN)

-Steve Gregory-

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################