Hi, Working one: "19 930 V 4848" > Non-working one: "19 634 V 4848" > > I haven't checked that the non-working one is indeed the 4.5V version, > that's just a nice theory. > > Marking info can be found here: > http://www.vishay.com/doc?80121 > > So what differs is the datecode (930 vs 634); it seems the working part > was manufactured in 2009 and the non-working one in 2006. > > Umm, Nice discovery; This means that a good design of choosing part needs to record datecode while making schematic sheet somewhere or sourcing stage? The M1, SIE and preceding avt2 prototypes we manufactured have not been quoted with a datecode system.
Does the "boom" system for bom explore this datecode from schematic sheet itself? As we know, if dealing with well-know brand manufacturer, datecode can be easily got from web site itself like through Digikey or Mouser. Others said brokers or non-authorized distributors are not reliable on this datecode. Surely indeed, this info can be recorded in sch sheets somewhere. Thanks, Adam
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