TPS61043: Is it possible to mount the new package on the land pattern of the old package?

Shinichi Inoue

Guru 20431 points

Part Number: TPS61043

Tool/software:

Dear Specialists,

My customer would like to confirm that there are no problems mounting the new package on the land pattern of the old package.

I would be grateful if you could advise.

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According to a related thread,
it has been mentioned that there is no problem with mounting the new package on the land pattern of the old package.

Is it possible to understand that there are no concerns about solder balls, etc.?

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I appreciate your great help in advance.

Best regards,

Shinichi

1 month ago

+1 Patrick Yao 1 month ago

TI__Mastermind 27750 points

Hi Shinichi,

It is ok to use old land pattern, but we still recommend customer evaluating with their assembly machines, and recommend following the new land pattern because in the future only new package will be shipped.

Patrick

0 Shinichi Inoue 1 month ago in reply to Patrick Yao

Guru 20431 points

Hi Patrick,

Thank you for your reply.

I confirmed the comment.

The customer's concern is that solder balls or short circuits may occur due to different power pads.

Can we assume that these are no concerns?

I appreciate your great help and cooperation.

Best regards,

Shinichi

+1 Patrick Yao 1 month ago in reply to Shinichi Inoue

TI__Mastermind 27750 points

Hi Shinichi,

Some of our customer also use old land pattern for the new package devices and we didn't receive any report of assembly issue for now. So I think the risk level should be low.

It is also suggested for customer to have a small-batch assembly test.

Patrick

0 Shinichi Inoue 1 month ago in reply to Patrick Yao

Guru 20431 points

Hi Patrick,

Thank you for your reply.

The customer would like to use the new package stencil for the old land pattern.

Is there a problem?

Is this the same as the condition you mentioned for the customer who already implemented a new package on an old land pattern?

I appreciate your great help and cooperation.

Best regards,

Shinichi

0 Patrick Yao 1 month ago in reply to Shinichi Inoue

TI__Mastermind 27750 points

Hi Shinichi,

Yes, your understanding is correct.

Patrick

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TPS61043: Is it possible to mount the new package on the land pattern of the old package?