Hello Kenny Seems to me like the key word is "internal". I think the intent is that magnet wire connections external to a component would be covered by the standard. I.E. where the actual winding(s) of a coil or transformer were brought out of its structure for connection (without an attached lead wire). I would be careful about specifying how a transformer manufacturer should build the interior of his product lest I get a component that no longer meets other regulatory requirements like any number of UL, CSA, IEC and other agency standards. John Thorup > -----Original Message----- > From: Kenny Bloomquist [SMTP:[log in to unmask]] > Sent: Tuesday, January 18, 2000 1:43 PM > To: [log in to unmask] > Subject: [TN] Transformer Wiring > > Hello TechNet, > > Here's another one of those specmanship things that has two different > organizations in our company at odds. > > The overall question is should J-STD-001 apply to internal connections of > transformers and magnetics? > > J-STD-001, Paragraph 3.2.1 says, "This standard is very limited in its > applicability to the manufacturing processes associated with the mounting > of internal electronic elements and the soldering of the internal > connections of transformers, motors, and similar devices. Unless a user > has > a specific need for the controls provided by this standard, it should not > be imposed relative to the manufacture of the internal elements of these > devices. The external interconnect points (i.e., terminals, pins, etc.) > must meet the solderability requirements of this document, less steam > aging." > > Sounds pretty straight froward until you read the J-STD-001Handbook, > IPC-HDBK-001. Companion paragraph to 001, 13.2.1 and subsequent paragraphs > go into great detail about magnetics manufacturing including 13.2.1.4, > Soldering Magnetic Wire Splices. It says, "Soldered connections involving > magnetic wire splices SHALL meet the requirements of the Standard." > > All that said and going back to my original question (solderability of the > leads aside), do I impose 001 on my transformer supplier for internal > connections or not? > > Thanks in advance, > > Ken Bloomquist > Sr. Principal Process Engineer > PRIMEX Aerospace Company > P.O. Box 97009 > Redmond, WA 98073-9709 > http://www.primextech.com > > Ph: 425-885-5000 > FAX: 425-882-5786 > [log in to unmask] > > Northcon/2000, Chairman of the Board > http://www.northcon.org > > Electronics Manufacturers Association (EMA), President > http://www.ema-wa.org > > ############################################################## > TechNet Mail List 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://www.ipc.org/html/forum.htm) for > additional > information. > If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################