UCC20225: Gold Embrittlement for NiAu?

Claudia Kolanovic

Part Number: UCC20225

Hi,

I would like to know if the termination finish is ENIG. Would gold removal be required for this part per IPC J-STD-001 (i.e. gold embrittlement mitigation)?

Thanks,
Claudia

over 4 years ago

0 Don Dapkus over 4 years ago

TI__Guru**** 189401 points

Hi, Claudia,

We publish our material BOMs for our devices. I hope this link works for you:

https://www.ti.com/quality-reliability-packaging-download/report?opn=UCC20225NPLT

If not, you can get to the info by going through this page. You might have to click thru a few screens to see the full list.

https://www.ti.com/materialcontent/home

Best regards,

Don

0 Claudia Kolanovic over 4 years ago in reply to Don Dapkus

Prodigy 10 points

Thank you, but this doesn't specify gold thickness. Can you confirm the Au thickness? I'm assuming the finish is electrolytic NiAu as opposed to ENIG... so gold removal is required, correct?

0 Don Dapkus over 4 years ago in reply to Claudia Kolanovic

TI__Guru**** 189401 points

Hi, Claudia,

Have you discussed this for other TI parts?

+1 Francisco Lauzurique over 4 years ago in reply to Don Dapkus

TI__Expert 3575 points

Hi Claudia,

You are correct, it is electrolytic finish with a gold thickness of ~ 0.45 um for UCC20225. You only consider to remove gold if thickness exceed 2.5um per IPC/JEDEC J-STD-001. The following image is from the IPC/JEDEC J-STD-001 standard.

Thank you very much for reaching out. Let us know if this answers your question.

Best

Francisco Lauzurique

0 Claudia Kolanovic over 4 years ago in reply to Francisco Lauzurique

Prodigy 10 points

Thank you for the information! I think in this case, gold removal would be required based on the second bullet point, "surface mount components to be soldered regardless of gold thickness".

0 Francisco Lauzurique over 4 years ago in reply to Claudia Kolanovic

TI__Expert 3575 points

Hi Claudia,

Happy to help, I will go ahead and close this thread. Thank you very much for reaching out.

Best

Francisco Lauzurique

Power management

Power management forum

UCC20225: Gold Embrittlement for NiAu?