Joyce, Selection of Paste and Rework Material is part of Design? Let define Design of what. 1. Design of schematic. No 2. Design of PCB. No. 3. Design of manufacturing process? Should be but seldom happens. If someone is going to run 100K cell phones or other large order system then yes, I would hope the material and rework process are all considered in the design of the manufacturing process. That's an area of the business where I am not involved. I am closer to the circuit design side of the business and I can absolutely assure you that many EEs or PCB Designers have never even seen paste on a stencil. Most CMs I have talked to have an existing process that they Tweak when something does not work. When we do this in the software area it is called hacking. It is not design. Maybe I am just a grumpy, burned out EE who wrote too much software related to PCB assembly. But I consider most (I did not say all) assembly houses to be lacking in process design. Very large (> $100M) companies I don't know. But the houses I have seen running boards in lots of 1K or less have not impressed me. Tell me I am wrong. I am open to ideas. Thanks, Bob Kondner -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo Sent: Tuesday, April 20, 2010 9:55 AM To: [log in to unmask] Subject: Re: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Correct me if I am wrong. Select paste and any rework repair material and process is part of design. The designer select all the devices in platform or generation format and draft BOM with termination finishing (with possible alternatives), and looked the key components thermal restriction requirement, and select required paste activity and possible rework times, temp. Solder wire or method. (Also may decide it just better to throw away). It also be the part of master plan for testing on what.% fault you want to repair and which field return forecast as a write offs. The question should be post to design group, not here. -------------------------- Sent using BlackBerry ----- Original Message ----- From: Robert Kondner [mailto:[log in to unmask]] Sent: Tuesday, April 20, 2010 09:26 AM To: [log in to unmask] <[log in to unmask]> Subject: Re: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Yes But, If you buy everything from one manufacturer and there is a problem do you really expect them to say: "Yes, It is my problems, I will fix it." ? If you think that would you like to buy a big bridge in New York City? :-) If you can get what you need at a reasonable price from a single supplier go for it. But various real world issues seldom make that possible. Bob Kondner -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis Sent: Tuesday, April 20, 2010 9:05 AM To: [log in to unmask] Subject: Re: [TN] Flux-Cored Wire Solder: Halide / Halide-Free Not only that, but it is inevitable that manufacturer X will blame the product of manufacturer Y, should you ever run into any trouble. Brian Karen Tellefsen wrote: > Do solder manufacturers actually develop products to be used together by > matching chemistries? > > Sometimes. > > Should one attempt to utilize paste, wire, and liquid flux all from a > single supplier, or is there no value there, in that an ORH0 is an ORH0 is > an ORH0? > > The advantage using one vendors chemistries is that the vendor may have > tested the materials together and can provide compatability/reliability > data. If you use chemistries from different vendors, you'll have to do > any compatability testing yourself. > > Karen Tellefsen - Electrical Testing > [log in to unmask] > 908-791-3069 > > > > > "Glidden, Kevin" > <Kevin.Glidden@as > tronics.com> To > TechNet E-Mail Forum > 04/20/2010 06:56 <[log in to unmask]>, Karen Tellefsen > AM <[log in to unmask]> > cc > > Subject > RE: [TN] Flux-Cored Wire Solder: > Halide / Halide-Free > > > > > > > > > > > Karen and Guy, > > Thanks for the responses. I like the looks of the Aqualine... > > But, more questions comes to mind..... > > Do solder manufacturers actually develop products to be used together by > matching chemistries? > > Should one attempt to utilize paste, wire, and liquid flux all from a > single supplier, or is there no value there, in that an ORH0 is an ORH0 is > an ORH0? > > For example, in some wire solder data sheets you will see statements that > it uses the same flux chemistry as either a paste or a liquid flux from the > same manufacturer. But on the other hand, I have seen manufacturers state > that the compatible flux with a given paste in product X, but then the > datasheet for product X states it was developed with the same chemistry as > a completely different paste. > > Thanks, > > Kevin Glidden > Manufacturing Engineer > Astronics Luminescent Systems Inc. > > -----Original Message----- > From: Karen Tellefsen [mailto:[log in to unmask]] > Sent: Monday, April 19, 2010 4:59 PM > To: [log in to unmask] > Subject: Re: [TN] Flux-Cored Wire Solder: Halide / Halide-Free > > Aqualine 6000 is halide-free, ORH0. Must be washed, washable in hot DI > water. > > Karen Tellefsen - Electrical Testing > [log in to unmask] > 908-791-3069 > > > > > "Guy M. Ramsey" > <gramsey@RDCIRCUI > TS.COM> To > Sent by: TechNet [log in to unmask] > <[log in to unmask]> cc > > Subject > 04/19/2010 02:42 Re: [TN] Flux-Cored Wire Solder: > PM Halide / Halide-Free > > > Please respond to > TechNet E-Mail > Forum > <[log in to unmask]> > ; Please respond > to > "Guy M. Ramsey" > <gramsey@RDCIRCUI > TS.COM> > > > > > > > Amtech makes a wire core solder with Halide free watersoluble flux. You > should > clean it but it cleans fairly easily. If you are looking to change your > cleaning > process, I recommend you look at it. We clean it with a spot steam cleaner. > > > If you are staying with alcohol you cannot use it. > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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 > 847-615-7100 ext.2815 > ----------------------------------------------------- > > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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 > 847-615-7100 ext.2815 > ----------------------------------------------------- > > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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 847-615-7100 ext.2815 > ----------------------------------------------------- > ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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