Steve, The last paragraph says it all, from my experience. Richard Hamilton Clemar Mfg. / Rain Bird [log in to unmask] > -----Original Message----- > From: SteveZeva [SMTP:[log in to unmask]] > Sent: Thursday, March 26, 1998 4:49 PM > To: [log in to unmask] > Subject: Re: [TN] ASSY: PARTS SOLDERABILITY > > Jim, > > Well, since I'm not employed at a assembly company (not at the > moment > anyway...hehehe), I'll share what has happened at other companies that > I've > worked at regarding any sort of solderability testing... > > I get the sneaking suspicion that there won't be many responses > that say > they don't do solderability testing, which IMHO is probably the norm > rather > than the exception...if I'm wrong go ahead and flame me, but I think > that most > of the time nowadays with the "demand-flow" of materials, there > probably isn't > near the solderability problems with components or PCB's that there > used to > be...parts and PCB's don't sit on a shelf for months and months > anymore and > become oxidized and unsolderable, it's too competitive out there...if > they > did, I'd bet there would be some Materials managers and buyers handed > their > walking papers. > > So nowadays in my opinion, the only time that there is solderability > testing > done (I'm speaking in pretty general terms now...) is when there IS a > problem, > after the fact, so they can have some ammo to be able to give the > parts or > PCB's back to who, or where ever they came from, or when there's some > sort of > survey or audit coming. > > I do think that may be changing as more and more companies are getting > into > no-clean...you have something hit the floor that ain't solderable when > you're > no-clean and it'll kill ya'... > > If it sounds like I'm being too pessamistic, maybe so...but I know > there's > been other M.E.'s or process engineers just like me who have been > tasked to > set-up a incoming recieving inspection area complete with all the > latest "doo- > dads" (wetting balance, viscosity meter and hot plates for solder > paste, > etc...) to check for problems before they hit the floor...it makes ya' > feel > like you wasted your time when you see dust gathering on all the > equipment > that you spent your time researching before you went out and spent > good money > on. > > But you know what? It really didn't hurt production... and for the > reasons I > stated in the beginning. Even though we were set-up to do > solderability > testing at the time, it didn't get done except for maybe a 2-4 week > stretch > just after the incoming recieving inspection area was set-up, and for > those > two occasions I spoke of earlier. > > The reason that was given to me why it wasn't done was that there were > hardly > ever any rejects, and that there were other items that DID need close > inspection (sheet metal, wiring harnesses, etc.) that drained all the > manpower > from incoming recieving. > > So that's my two-cents for what > it's > worth... > > -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 web site (http://jefry.ipc.org/forum.htm) for > additional information. > For the technical support contact Dmitriy Sklyar at [log in to unmask] or > 847-509-9700 ext.311 > ################################################################ ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################