Can you find a way to thermally protect the lens area? Can the supplier offer a version with a thermal tape applied to protect from reflow? We have some digital sensor devices in the same thermal situation. But we have very tight placement tolerances so we made a fixture for the alignment and have to hand solder them on. Kat >>> [log in to unmask] 09/12/03 03:56AM >>> We have a customer who is looking at assembling some surface mount LEDs to a FR-4 board. We are told that the parts will not stand conventional reflow temperatures (they themselves are made with a LMP solder, and the lens is temperature sensitive). At this stage, I don't know much more detail. The query is whether he could print conventional paste, place the devices and then reflow each joint individually, by using a robot. But a soldering iron applied the paste will cause spitting, solder balls, etc. Perhaps a thermode could be applied to the joint and a temperature ramp up applied, which will safely reflow the paste, if such a thing exists and can be mounted to a robot. I would be interested in general thoughts on how to process these parts. Maybe not even solder... TIA, Peter -- -------------------------------------------------------- Peter Swanson [log in to unmask] INTERTRONICS http://www.intertronics.co.uk Tel: +44 1865 842842 Oxfordshire, England INTERTRONICS is dedicated to providing quality material, consumable and equipment solutions to high technology assembly industries, with the highest levels of technical support and customer service. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------