Kinetis MicrocontrollersのトピックRe: mk66fn2m0vlq18

mk66fn2m0vlq18

a8Chcx — Mon, 01 May 2023 13:25:11 GMT

Hi,

I got two chips of MK66, see the attached pictures.

The one with QCX1839N in third line is not working. When I soldered to PCB board, there is shortage between 3.3V and GND.

But, the other one is working fine...

Can anybody tell me if the chip(not working one) is not from NXP? And how to confirm this?

Thanks,

Christie

Re: mk66fn2m0vlq18

a8Chcx — Mon, 01 May 2023 13:26:37 GMT

Attached Pictures...

Re: mk66fn2m0vlq18

vicentegomez — Tue, 02 May 2023 20:30:40 GMT

Where did you buy this part?

I could not find any record for the date code QCX1839N

Regards

Re: mk66fn2m0vlq18

a8Chcx — Tue, 02 May 2023 20:37:06 GMT

Hi Vicente,

We bought these from Honkong, China because of shortage.

Could you find the other date code from NXP because I want to see if it is fake chips?

The failed one only has 1dot(Pin1) on top of chip. And other one(working) has 3 dots.

Thanks,

Christie

Re: mk66fn2m0vlq18

vicentegomez — Wed, 03 May 2023 16:47:30 GMT

For the XNAF1749N we have information in our data base

Re: mk66fn2m0vlq18

a8Chcx — Wed, 03 May 2023 16:55:26 GMT

Hi Vicente,

It is possible to confirm the one not in your database is fake one? Or something else?

Thanks,

Christie

Re: mk66fn2m0vlq18

vicentegomez — Wed, 03 May 2023 18:31:17 GMT

looks like yes, especially if you bought it with a not authorized distributor.

Re: mk66fn2m0vlq18

a8Chcx — Wed, 03 May 2023 19:14:21 GMT

Hi Vicente,

Any way to confirm it from your side? Did it happen before on MK66?

Regards,

Christie

Re: mk66fn2m0vlq18

a8Chcx — Thu, 04 May 2023 11:49:32 GMT

Hi Vicente,

There is any difference between 3 dots and 1 dots?

Can you help me to identify the fake chip?

Thanks,

Christie