TPS50601-SP: Discoloration of the Leads

Hey Yohei,

There are two general reasons why discoloration can happen with units.
1. Oxidation

2. Salt in the atmosphere.

In either case 1 or case 2 TI has done testing on discolored units and they have passed lead-fatigue/solderability tests.
Our stance is that discolored units do not impact package integrity, lead integrity, or solderability degradation.

Thanks,
Daniel

Hi Daniel,

Hope you're well and thank you so much for your kind reply.

Please allow me to forward the information kindly provided to our Japan team and we will be grateful if you could kindly provide further support if I receive any other inquiries from them.

Thank you so much again for your kind support and warm consideration.

Hope you will be having a great rest of your day.

Kind Regards,

Yohei

Hey Yohei,

I have emailed you the information.

Thanks,
Daniel

Hi Daniel,

Thank you so much for an email!

Kind Regards,

Yohei

Welcome

Thanks,
Daniel

Hi Daniel,

Just received a further inquiry from our Japan team as below.

<Inquiry>

Are the results of this report valid for all products that contain Au-Ni coated Ag-Cu brazed leads?

Would you please kindly provide your knowledge again for this inquiry?

Thank you so much for your kind support.

Kind Regards,

Yohei

Hey Yohei,

Our packages use similar processes for leads, so we believe the report is valid for the part the customer is asking about.

Thanks,
Daniel

Hi Daniel,

Thank you so much for your kind reply.

Please allow me to forward the information back to our Japan team and hope the information kindly provided will close the case.

Thank you again for your kind support.

Kind Regards,

Yohei

Welcome

Thanks,
Daniel

Hi Daniel,

I've received another inquiry from our Japan team that the customer is concerning where the discoloration on ceramic package lead brazing report is provided.

Would it be possible for you to kindly advise if the report is written and provided from TI's QA department or where is it from?

I am truly sorry for taking time for this and thank you so much for your kind support.

Kind Regards,

Yohei

Hey Yohei,

The report is from TI's internal investigation about the topic.

Thanks,
Daniel

Hi Daniel,

Thank you so much for your kind reply though it is very late at night.

I have forwarded the information back to our Japan team.

Please allow me to update you once I receive any feedback from them.

Hope you could kindly provide your support and knowledge if I receive further inquiries.

Thank you so much again for all the kind support and hope you will be having a great rest of your day.

Kind Regards,

Yohei

Welcome

Thanks,
Daniel