ISO1540DR and ISO7221CDR Soldering Issue

Kailyn Chen

Part Number: ISO1540

Hello;

We have a customer who bought a reel of ISO1540DR and ISO7221CDR from Mouser, but he found that the footprint is dull-red and there is little Sn of the footprint caused inconvenience of soldering. So the customer need to confirm if there is special process of the soldering, is it normal ?

Best regards

Kailyn

over 5 years ago

0 Abhi Aarey over 5 years ago

TI__Intellectual 2325 points

Hi Kailyn,

I double-checked the packaging sections of both the ISO1540 (page 28) and ISO7221 (page 30, 31)- we do not expect Sn to present at all in the leads. Both parts have a Cu NiPdAu finish on the leads. There are no special soldering steps required for these parts.

Can you send us a couple of pictures of this and lot trace codes please? I'll have my team look into this and follow-up with you.

Regards,
Abhi

0 Koteshwar Rao over 5 years ago in reply to Abhi Aarey

TI__Mastermind 49445 points

Hi Kailyn,

As Abhi requested, please let us know if you were able to gather the pictures of devices with the observations that customer seen and the lot trace codes so that we can get this double checked with the quality team. Thanks.

Regards,
Koteshwar Rao

0 Dan Kisling over 5 years ago in reply to Koteshwar Rao

TI__Expert 6195 points

Hi Kailyn,

We haven't heard from you in over a week. We would be happy to support you further but we will need more information. For now, I'm going to close this thread and mark it as resolved.

Please either reply to this thread to re-open it (and click this did not resolve my issue) if you have more information or start a new thread (in the event that this thread locks by the time you get more information).

Best regards,
Dan

Isolation

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ISO1540DR and ISO7221CDR Soldering Issue