# RC76xx part number changes

**URL:** <https://forum.sierrawireless.com/t/rc76xx-part-number-changes/30615>\
**Category:** RC76\
**Created:** [September 15, 2023, 9:13am UTC](https://forum.sierrawireless.com/t/rc76xx-part-number-changes/30615 "2023-09-15T09:13:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lilly.doye](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/lilly.doye/32/8733_2.png) [@lilly.doye](https://forum.sierrawireless.com/u/lilly.doye)\
**Post date:** [September 15, 2023, 9:13am UTC](https://forum.sierrawireless.com/t/rc76xx-part-number-changes/30615/1 "2023-09-15T09:13:31Z")

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I have a product design based around the RC7620 and RC7611 modules. I’ve specified the RC7620\_1104625 and RC7611\_1104595 as the full part numbers to use as these were the available modules when we started the design process. Digikey is now showing these parts as obsolete, replaced by the RC7620\_1105026 and RC7611\_1105020 respectively. I’ve not been able to find any information on what the portion of the part number after the underscore actually signifies. Is there a document anywhere that explains the part numbers in more detail? Will the Digikey recommend alternatives be drop in replacements or are there better alternatives I should be considering?

Does Sierra wireless have any kind of obsolescence notification system in place I can sign up for to catch these kinds of changes further in advance in the future?

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 15, 2023, 9:34am UTC](https://forum.sierrawireless.com/t/rc76xx-part-number-changes/30615/2 "2023-09-15T09:34:24Z")

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those product change notice should be shared with distributor.

e.g.

> **[Sierra Wireless RC7620-1 LTE CAT-1 LGA - 11373 - RC7620-1\_1104626
- 4G LTE...](https://techship.com/products/sierra-wireless-rc7620-1-lte-cat-1-lga/)**
>
> Reliable Cat-1 LTE connectivity for European 4G networks with 3G fallback
> MangOH Yellow reference design is the official development kit for the RC series, you can find it here.
> 
> The RC7620-1 module is part of the RC Series that lowers total cost of...

Probably you need to check with the distributor