is it different between production year in nrf24l01+???

[hamid]

I have used nrf24l01+(production year=2015) in my project and my board and my program are working well......but when I change nrf24l01+(production year=2016) my board doesn't work at all....please guide me....

[Bjørn Kvaale]

Hi Hamid. I have not found any major differences between the 2015 and 2016 production years. Did you buy the chips from the same vendor? The only thing I could think is that the 2016 chip might be a fake, and the 2015 is a real Nordic chip (see link). Did you buy the chips from one of these stores? If you didn't buy the chip from one of our affiliated partners, you cannot be certain if the chip is a genuine Nordic product or not.