By "reconditioned", do you mean counterfeit? Why would the markings be different? I could see if they were from an older batch... salvaged parts.
I got burned one time at work on counterfeit parts, bad op-amps from Burr-Brown. Except not really, fake parts made in China. Why would they counterfeit a 60 cent part? Because they can make 55 cents on it and sell them by the millions. In most applications it would never have been caught. But it was in mine, and caused quite a ripple back up the supply chain. Terry On Friday, February 5, 2016 at 11:04:43 AM UTC-6, 严泽远 wrote: > There're so many reconditioned DS3231SN chips in China market, most of > them are disassembled from some old equipment, just like electricity > meter... I can find some RTC module list price 0.5USD with DS3231SN on it, > it must be reconditioned one since a new DS3231SN will over 1.5USD. But > it's not difficult to recognize the new one or reconditioned one, the > thickness and laser characters are different. > > Laser characters of reconditioned have wider line than real one, looks > rough, please check them: > > > > > 在 2016年2月4日星期四 UTC+8下午11:04:45，gregebert写道： >> >> Lesson learned: You get what you pay for. >> >> I bought a $2 US realtime clock module on Ebay, imported from China, and >> the DS3231 chip appears to be counterfeit because it was not keeping >> accurate time. I was suspicious about the price, considering I paid almost >> $8 US just for the DS3231 from a reputable supplier. Over a few days, it >> lost about 1 hour of time. >> >> After replacing the chip with a genuine Maxim DS3231, it's running >> correctly. >> >> A quick web-search found there are several others who have experienced >> this. >> >> Despite having to replace the RTC chip, the module itself is still worth >> the price because it included a rechargeable Li-ion coin battery and a >> serial EEPROM (no time yet to see if that's working correctly...) >> > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/0b8c91d4-42bb-49c0-a4be-00be0d912edd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
