james.wilson Posted June 27, 2013 Posted June 27, 2013 Top post bee securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
MrHappy Posted June 27, 2013 Posted June 27, 2013 You are even getting close to the 30 years life expectancy of semiconductors! interesting, what's your source ? Mr Veritas God
bee_man Posted June 27, 2013 Posted June 27, 2013 Standard industry knowledge really, still taught to students so I assume still valid. Google for semiconductor bathtub or follow links from wiki : http://en.wikipedia.org/wiki/Bathtub_curve Failures drop drastically in the first few months due to defects then rise fairly quickly around the 30 year mark due to diffusion and other wear out processes, leaving probability of failure looking like a section through a bath tub. Higher temperatures lead to earlier failures. Some components like DRAM have very much lower life span, and things like IGBT power devices are expected to live longer. bee
matthew.brough Posted June 27, 2013 Posted June 27, 2013 Standard industry knowledge really, still taught to students so I assume still valid. Google for semiconductor bathtub or follow links from wiki : http://en.wikipedia.org/wiki/Bathtub_curve Failures drop drastically in the first few months due to defects then rise fairly quickly around the 30 year mark due to diffusion and other wear out processes, leaving probability of failure looking like a section through a bath tub. Higher temperatures lead to earlier failures. Some components like DRAM have very much lower life span, and things like IGBT power devices are expected to live longer. bee Can tell you're not an installer www.securitywarehouse.co.uk/catalog/
MrHappy Posted June 27, 2013 Posted June 27, 2013 Standard industry knowledge really just wanted a nice simple link.... Very old alarms are quite common, very old company cars or computers ain't... Mr Veritas God
arfur mo Posted June 27, 2013 Posted June 27, 2013 just wanted a nice simple link....Very old alarms are quite common, very old company cars or computers ain't... i have 2 Sinclair C5's - 30 years old and still going strong lol! If you think education is difficult, try being stupid!!!!
MrHappy Posted June 27, 2013 Posted June 27, 2013 i have 2 Sinclair C5's - 30 years old and still going strong lol! triggers broom ? Mr Veritas God
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