Bev, 1) Usually with integral standoffs (bumps) on the package itself. 2) For visual inspection of topside wetting, prevention of lead shorts to metal case devices, potential damage from solder contact to component body. 3) Gross visual inspection, go/no go gages if extremely picky. As stated in 5.2.6, this is the Target condition. Process Indicator can be less (down to completely flush to board) or more, just as long as minimum electrical clearances aren't violated.... Mike McMonagle Senior SMT Engineer Telxon Corporation http://www.telxon.com <http://www.telxon.com> -----Original Message----- From: Bev Christian [mailto:[log in to unmask]] Sent: Friday, July 21, 2000 7:52 AM To: [log in to unmask] Subject: [TN] Mounting- Vertical - Radial Leaded Here's an easy one. Page 5-12 of IPC-A-610C shows radial PTH components with a standoff between the component base and the board. 1) How do you all meet this requirement? 2) What is the purpose of it? 3) How do you inspection for it? My guesses: 1) lead forming, soluble plastic disks or tubing, friction fit, by chance, don't 2) heat dissipation, inspection, strain on solder joint 3) eye, thickness gauge, don't I await your sage comments, oh wise ones. regards, Bev Christian XLTEK ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ############################################################## ############################################################## 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 Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################