What's the difference between the EP2C35F672C8Ns I have on-hand?

[PBINS]

I've got (2) sets of EP2C35F672C8N that look significantly different. One set has an obviously larger "chip".  Here are the markings on each:

"SMALLER" VERSION

EP2C35F672C8N

K CBD9Y1343A

KOREA

VBD9Y60321

3Q1KA3X0I

"LARGER" VERSION

EP2C35F672C8N

K CBD9Y1413U

KOREA

VBD9Y62586

3R1KU4H0D

Thanks in advance,

Paul

[ChiaLing_T_Intel]

Hi Pbins,

Thank you for contacting Intel Community. Would you share with me how the difference chip look like between this 2 parts?

For your information, Intel FPGA is introducing "Green" Bill of Materials for the Cyclone II device families in year 2012. There is a slight increase to the mold compound coverage for F672 packages devices. For details, kindly refer to PCN1105:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/pcn/pcn1105.pdf

Thank you

Regards,

Chia Ling

[PBINS]

​Hello Chia.  I've attached a file <Different Looking EP2C35F672C8Ns 190619.pdf> that shows the visible differences between the two I have on-hand.  One of our board manufacturers told us the "Larger" one looks counterfeit!  Does the "Larger" FPGA appear to be genuine?

[ChiaLing_T_Intel]

Hi Pbins,

By referring to PCN1105, Figure 1, you will notice there would be two different mold area observed.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/pcn/pcn1105.pdf

 Intel FPGA is introducing "Green" Bill of Materials for the Cyclone II device families in year 2012, so it is expected to have 2 different outlook.

Next, Intel PSG has its authorized distributor to sale Intel devices. If the customer got the devices from formal distributors, they shouldn’t worry on the device authenticity as the devices must be valid units. Otherwise, we do not ensure the device quality and do not provide the further service. You may find the authorized distributor list from the link below:

https://www.intel.com/content/www/us/en/programmable/buy.html

Thank you

Regards,

Chia Ling