I'll have to talk to my tech next week when he gets back, because I know he replaced some LTC parts that had the thermal pad on them....might have heated up the part and let it flow some.. --- Philip Pemberton wrote: > In message <422D9B95.1030505@cotse.net> > Bob Axtell wrote: > > > I think the only way to do that is to have a pad > with a large (1-2mm) > > feedthru on the bottom, > > so somebody can force solder into it. > > I guess the best option would be to do something > like this: > 1. Tin all pads, including heatsink pad > 2. Drill hole in heatsink pad > 3. Add flux > 4. Solder pins > 5. Solder heatsink pad from bottom of board > > > I tried one of these, and gave up since unless you > have an xray machine, > > you can't be certain > > that you have a thermal connection. > > Damn. I wonder how good a thermal link you could > make by just leaving the > chip on the pad. Another alternative might be to use > solder paste and a hot > air paint-stripper to melt the solder. If I did that > I'd be a bit wary about > overheating the chip, though. > > > This is another of those unworkable ideas, like > the Income Tax. > > :) > > Thanks. > -- > Phil. | Acorn Risc > PC600 Mk3, SA202, 64MB, 6GB, > philpem@philpem.me.uk | ViewFinder, > 10BaseT Ethernet, 2-slice, > http://www.philpem.me.uk/ | 48xCD, ARCINv6c > IDE, SCSI > ... Remington, shaves as close as a blade or we send > the boys round. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist