Blair, For "Class 3" operation they'd better. High humidity (>60%) can generate thin aqueous films that react the same as bulk water. David A. Douthit Manager LoCan LLC Blair K. Hogg wrote: >They won't - I know from experience. But, do you want to pay $50 for a keyboard that will take spills, or $10 for one that won't? > > > >>>>[log in to unmask] 03/09/04 01:54PM >>> >>>> >>>> > Shouldn't PWA modules be protected from any liquid? We can not >expect a keyboard survive a coffee spill. > Ramon > > > >>-----Original Message----- >>From: Randy Bock Sr. [SMTP:[log in to unmask]] >>Sent: Tuesday, March 09, 2004 12:48 PM >>To: [log in to unmask] >>Subject: Re: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR >> >> >Conformal Coating > > >>Bug juice concetrate makes a good bright work cleaner. Turko cleaner >>was the thing to clean with. Mixed with water did ok. Straight would >>turn your hands to wrinkled prunes. >> >> >> >>Randy Bock Sr. >>Quality Manager >>GMS Naugatuck >>(p) 203 720-3861 >>(f) 203 729-5397 >>(email) [log in to unmask] >> >> >> >> >>David Douthit <[log in to unmask]> >>Sent by: TechNet <[log in to unmask]> >>03/09/2004 12:29 PM >>Please respond to >>"TechNet E-Mail Forum." <[log in to unmask]>; Please respond to >>David Douthit <[log in to unmask]> >> >> >>To >>[log in to unmask] >>cc >> >>Subject >>Re: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR Conformal Coating >> >> >> >> >> >> >>Ramon, >> >>You might be amazed at what cleaning crews use on the interior and >>exterior of aircraft. >> >>David A. Douthit >>Manager >>LoCan LLC >> >>Dehoyos, Ramon wrote: >> >> >> >>> Thanks for the correction. >>> Ramon >>> >>> >>> >>> >>> >>>>-----Original Message----- >>>>From: Crepeau, Phil (Space Technology) >>>>Sent: Tuesday, March 09, 2004 10:44 AM >>>>To: Dehoyos, Ramon >>>>Subject: RE: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR >>>> >>>> >>>> >>>> >>>Conformal Coating >>> >>> >>> >>> >>>>i think you meant type ar not ur. >>>> >>>>-----Original Message----- >>>>From: Dehoyos, Ramon (NG) >>>>Sent: Tuesday, March 09, 2004 6:08 AM >>>>To: [log in to unmask] >>>>Subject: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR Conformal >>>>Coating >>>> >>>> >>>> One of the disadvantages of UR coating is that it will not >>>> >>>> >>>> >>>> >>>withstand >>> >>> >>> >>> >>>>solvents. Besides boards in aircrafts that might be closed to the fuel >>>>tank or in automobile engine compartments, most boards are not in >>>> >>>> >>>> >>>> >>>proximity >>> >>> >>> >>> >>>>to fuels, acetone or alcohol. So UR is plenty good. It saves a lot of >>>> >>>> >>>> >>>> >>>boards >>> >>> >>>>from being damaged during rework due to the simplicity of removal. >>> >>> >>>> Regards, >>>> Ramon >>>> >>>> >>>> >>>> >>>> >>>>>-----Original Message----- >>>>>From: Dehoyos, Ramon >>>>>Sent: Tuesday, March 09, 2004 8:15 AM >>>>>To: [log in to unmask] >>>>>Subject: Re: [TN] Pros and Cons on Type UR vice Type AR Conformal >>>>> >>>>> >>>>> >>>>> >>>>Coating >>>> >>>> >>>> >>>> >>>>> One thing to know is that AR can be coated to patch UR but not >>>>> >>>>> >>>>> >>>>> >>>the >>> >>> >>> >>> >>>>>other way around. Patching AR with UR creates a mix that takes too long >>>>> >>>>> >>>>> >>>>> >>>to >>> >>> >>> >>> >>>>>dry, stays soft. So to switch from UR to AR is recommended. >>>>> Regards, >>>>> Ramon >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>>-----Original Message----- >>>>>>From: - Bogert [SMTP:[log in to unmask]] >>>>>>Sent: Monday, March 08, 2004 4:55 PM >>>>>>To: >>>>>>Subject: [TN] Pros and Cons on Type UR vice Type AR Conformal >>>>>> >>>>>> >>>>>> >>>>>> >>>>Coating >>>> >>>> >>>> >>>> >>>>>>As a Class 3 customer we are considering mandating transition from >>>>>> >>>>>> >>>>>> >>>>>> >>>Type >>> >>> >>> >>> >>>>UR >>>> >>>> >>>> >>>> >>>>>to Type AR conformal coating, to make it easier to replace failed >>>>>components. Are there any Class 3 users of Type AR coating? What is >>>>> >>>>> >>>>> >>>>> >>>>track >>>> >>>> >>>> >>>> >>>>>record for using Type AR? Are there any compatibility issues with >>>>> >>>>> >>>>> >>>>> >>>certain >>> >>> >>> >>> >>>>>types of solder masks? Any input you have would help. Another >>>>> >>>>> >>>>> >>>>> >>>advantage >>> >>> >>> >>> >>>>>with AR would be for returned equipment. The OEM could remove all the >>>>>coating from an assembly using alcohol, then perform >>>>> >>>>> >>>>> >>>>> >>>>>>--------------------------------------------------- >>>>>>Technet Mail List provided as a service by IPC using LISTSERV 1.8e >>>>>>To unsubscribe, send a message to [log in to unmask] with following text >>>>>> >>>>>> >>>>>> >>>>>> >>>>in >>>> >>>> >>>> >>>> >>>>>>the BODY (NOT the subject field): SIGNOFF Technet> >>>>>>To temporarily halt or (re-start) delivery of Technet send e-mail to >>>>>> >>>>>> >>>>>> >>>>>> >>>>>[log in to unmask]: SET Technet NOMAIL or (MAIL) >>>>> >>>>> >>>>> >>>>> >>>>>>To receive ONE mailing per day of all the posts: send e-mail to >>>>>> >>>>>> >>>>>> >>>>>> >>>>>[log in to unmask]: SET Technet Digest >>>>> >>>>> >>>>> >>>>> >>>>>>Search the archives of previous posts at: >>>>>> >>>>>> >>>>>> >>>>>> >>>>http://listserv.ipc.org/archives >>>> >>>> >>>> >>>> >>>>>>Please visit IPC web site >>>>>> >>>>>> >>>>>> >>>>>> >>>>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >>>> >>>> >>>> >>>> >>>>>for additional information, or contact Keach Sasamori at [log in to unmask] >>>>> >>>>> >>>>> >>>>> >>>or >>> >>> >>> >>> >>>>>847-509-9700 ext.5315 >>>>> >>>>> >>>>> >>>>> >>>>>>----------------------------------------------------- >>>>>>bed-of-nails testing to quickly identify failed components. >>>>>> >>>>>> >>>>>> >>>>>> >>>>>--------------------------------------------------- >>>>>Technet Mail List provided as a service by IPC using LISTSERV 1.8e >>>>>To unsubscribe, send a message to [log in to unmask] with following text >>>>> >>>>> >>>>> >>>>> >>>in >>> >>> >>> >>> >>>>>the BODY (NOT the subject field): SIGNOFF Technet >>>>>To temporarily halt or (re-start) delivery of Technet send e-mail to >>>>> >>>>> >>>>> >>>>> >>>>[log in to unmask]: SET Technet NOMAIL or (MAIL) >>>> >>>> >>>> >>>> >>>>>To receive ONE mailing per day of all the posts: send e-mail to >>>>> >>>>> >>>>> >>>>> >>>>[log in to unmask]: SET Technet Digest >>>> >>>> >>>> >>>> >>>>>Search the archives of previous posts at: >>>>> >>>>> >>>>> >>>>> >>>http://listserv.ipc.org/archives >>> >>> >>> >>> >>>>>Please visit IPC web site >>>>> >>>>> >>>>> >>>>> >>>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >>> >>> >>> >>> >>>>for additional information, or contact Keach Sasamori at [log in to unmask] >>>> >>>> >>or >> >> >>>>847-509-9700 ext.5315 >>>> >>>> >>>> >>>> >>>>>----------------------------------------------------- >>>>> >>>>> >>>>> >>>>> >>>>--------------------------------------------------- >>>>Technet Mail List provided as a service by IPC using LISTSERV 1.8e> >>>>To unsubscribe, send a message to [log in to unmask] with following text >>>> >>>> >>in >> >> >>>>the BODY (NOT the subject field): SIGNOFF Technet >>>>To temporarily halt or (re-start) delivery of Technet send e-mail to >>>> >>>> >>>> >>>> >>>[log in to unmask]: SET Technet NOMAIL or (MAIL) >>> >>> >>> >>> >>>>To receive ONE mailing per day of all the posts: send e-mail to >>>> >>>> >>>> >>>> >>>[log in to unmask]: SET Technet Digest >>> >>> >>> >>> >>>>Search the archives of previous posts at: >>>> >>>> >>http://listserv.ipc.org/archives >> >> >>>>Please visit IPC web site >>>> >>>> >>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >> >> >>>> >>>> >>>for additional information, or contact Keach Sasamori at [log in to unmask] >>> >>> >>or >> >> >>>847-509-9700 ext.5315 >>> >>> >>> >>> >>>>----------------------------------------------------- >>>> >>>> >>>> >>>> >>>--------------------------------------------------- >>>Technet Mail List provided as a service by IPC using LISTSERV 1.8e >>>To unsubscribe, send a message to [log in to unmask] with following text in >>>the BODY (NOT the subject field): SIGNOFF Technet >>>To temporarily halt or (re-start) delivery of Technet send e-mail to >>> >>> >>[log in to unmask]: SET Technet NOMAIL or (MAIL) >> >> >>>To receive ONE mailing per day of all the posts: send e-mail to >>> >>> >>[log in to unmask]: SET Technet Digest >> >> >>>Search the archives of previous posts at: >>> >>> >>http://listserv.ipc.org/archives >> >> >>>Please visit IPC web site >>> >>> >>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional >>information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 >>ext.5315 >> >> >>>----------------------------------------------------- >>> >>> >>> >>> >>> >>> >>--------------------------------------------------- >>Technet Mail List provided as a service by IPC using LISTSERV 1.8e >>To unsubscribe, send a message to [log in to unmask] with following text in >>the BODY (NOT the subject field): SIGNOFF Technet >>To temporarily halt or (re-start) delivery of Technet send e-mail to >>[log in to unmask]: SET Technet NOMAIL or (MAIL) >>To receive ONE mailing per day of all the posts: send e-mail to> >>[log in to unmask]: SET Technet Digest >>Search the archives of previous posts at: http://listserv.ipc.org/archives >>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >>for additional information, or contact Keach Sasamori at [log in to unmask] or >>847-509-9700 ext.5315 >>----------------------------------------------------- >> >> >> >>--------------------------------------------------- >>Technet Mail List provided as a service by IPC using LISTSERV 1.8e >>To unsubscribe, send a message to [log in to unmask] with following text in >>the BODY (NOT the subject field): SIGNOFF Technet >>To temporarily halt or (re-start) delivery of Technet send e-mail to >> >> >[log in to unmask]: SET Technet NOMAIL or (MAIL) > > >>To receive ONE mailing per day of all the posts: send e-mail to >> >> >[log in to unmask]: SET Technet Digest > > >>Search the archives of previous posts at: http://listserv.ipc.org/archives >>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >> >> >for additional information, or contact Keach Sasamori at [log in to unmask] or >847-509-9700 ext.5315 > > 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