Hi Phil You're right ; sounds that much more clear than J ; looks like I didn't reed it all after all ( or forgot what I've read ) = sorry Sherman ; at least I've made a fool of myself with a good result thanks to Phil . So that's the law ; can see the tensions on bridging of space working ; can't see the stress (apart from thermal dissipation = must be the reason for stacking ban) on stacking . Thanks Phil ; going shopping (275) Paul Klasek http://www.resmed.com > ---------- > From: Crepeau, Phil[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;Crepeau, Phil > Sent: Wednesday, October 07, 1998 12:31 AM > To: [log in to unmask] > Subject: Re: [TN] ASSY: stacking 1206 chip resistors > > hi, > > well, the nice thing about ansi/ipc-d-275 is that they don't pussyfoot > around this issue. they must have actually had manufacturing in mind > when > they wrote the following paragraph and inserted figure 4-38. > > '4.4.2.1 end-capped discrete components. end-capped discrete resistor > and > capacitor components, and similar leadless end-capped discrete > components, > shall not be stacked, nor shall they bridge spacing between other > parts or > components, such as terminals or other mounted compnents (see figure > 4-38). > > 'end-cap discrete leadless components with electrical elements > deposited on > an external surface, such as chip resistors, shall be mounted with the > deposited surface facing away from the printed board (see figure > 4-39).' > > don't need a lawyer here do you? > > phil crepeau > > -----Original Message----- > From: Paul Klasek [mailto:[log in to unmask]] > > ################################################################ > TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" > section for additional information. > For technical support contact Hugo Scaramuzza at [log in to unmask] or > 847-509-9700 ext.312 > ################################################################ > ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################