Jack, IPC-4101 is in "Interim Final" circulation and when published should be adequate to handle both commercial and Mil-spec replacement callouts. IPC-4101 will supercede IPC-L-108 (thin lam), IPC-L-109 (prepreg), IPC-L-112 (composite lam) and IPC-L-115 (rigid lam). I hope that within one year it will also replace MIL-P-13949. Regards __________________________________________________ David W. Bergman, V.P. of Technical Programs IPC 2215 Sanders Road Northbrook, IL 60062-6135 847-509-9700 x340 Phone 847-509-9798 Fax email [log in to unmask] www http://www.ipc.org --------------------------------------------------- On Fri, 9 May 1997, Jack Olson wrote: > I am embarrassed to have to ask this, because I know it has been > discussed before, but I have a question about replacing MIL standard > references with commercial standards. > > Our default fabrication drawing notes always say (whatever specific) > material "per MIL-P-13949". Is that common these days? Is there a better > replacement for material if our designs are commercial only? Does it > even matter? > > I looked at the IPC stuff and there is a whole series of IPC-L-XXX > specs, but I wouldn't even know what is appropriate. > I thought I had a web link to a "comparison" kind of service, but can't > find it (I've just discovered that many links I have been saving for a > special occasion like this, no longer work! d'oh!) > > On a more broad-scale issue: Are any of you fabrication vendors out > there willing to share what you like to see on a fab dwg regarding > notes? For many of us, we just want a good product and don't really care > what the notes say, we just put whatever we think you need to see.... > What do you need to see, MINIMUM? > > material, finish, mask, & legend > quality per ipc-rb-275 for type x class x > is that enough? jack > > *************************************************************************** > * The mail list is provided as a service by IPC using SmartList v3.05 * > *************************************************************************** > * To unsubscribe from this list at any time, send a message to: * > * [log in to unmask] with <subject: unsubscribe> and no text.* > *************************************************************************** > * If you are having a problem with the DesignerCouncil, please contact * > * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * > *************************************************************************** >