At 13:23 04.09.2002 -0800, you wrote: >Does anybody have any info or sources on initial burn-in >testing of electronic products. For example, I have a >prototype product consisting of an embedded MCU and some >digital and analog I/O. I would like to develop a burn >in procedure. Should it be done at room temp. or at an >elevated temp ?
I don't know if this is an industrial standard, but I always test my circuits 25% beyond the specified ranges regarding temperature. Try a hot air gun and ice spray. You should also test the voltage stability; if it's a 5V MCU, try if it works for some hours at 4V. MCUs like PIC microcontrollers can be overclocked very far (4Mhz units run perfectly at 10 Mhz!), so you don't have to check if this keeps working for the time period. CPUs are usually not that tolerant, so you should try if it works for a long period at overclocking speeds, and then produce the boards at regular clock speed. ciao, -- Jens Sch�nfeld -- Author: Jens =?iso-8859-1?Q?Sch�nfeld? INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
