# SMHV Series -S2 Suffix

**URL:** <https://forum.digikey.com/t/smhv-series-s2-suffix/66532>\
**Category:** Power Supplies (board mount)\
**Tags:** part-numbering, hvm-technology-inc, dc-dc-converters\
**Created:** [March 12, 2026, 10:55pm UTC](https://forum.digikey.com/t/smhv-series-s2-suffix/66532 "2026-03-12T22:55:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![chris\_groom](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/chris_groom/32/54044_2.png) [@chris\_groom](https://forum.digikey.com/u/chris_groom)\
**Post date:** [March 12, 2026, 10:55pm UTC](https://forum.digikey.com/t/smhv-series-s2-suffix/66532/1 "2026-03-12T22:55:08Z")

</div>

Some parts in the [SMHV](https://www.digikey.com/en/products/filter/dc-dc-converters/922?s=N4IgjCBcoLQCxVAYygMwIYBsDOBTANCAG4B2aWehA9lANogDsAbAKwCcLIAuoQA4AuUECAC%20YoA) Series from [HVM Technology Inc.](https://www.digikey.com/en/supplier-centers/hvm-technology) have an -S2 suffix that is not defined in the datasheet. This is a suffix used to mark these as components which have had an optional metal case for shielding attached.

> **List of Affected Parts**
>
> [2244-SMHV0520-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV0520-S2-ND)  
> [2244-SMHV05100N-S2-ND](https://www.digikey.com/en/products/detail/hvm-technology-inc/SMHV05100N-S2/13913815)  
> [2244-SMHV05100-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV05100-S2-ND)  
> [2244-SMHV0520N-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV0520N-S2-ND)  
> [2244-SMHV0560-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV0560-S2-ND)  
> [2244-SMHV0560N-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV0560N-S2-ND)  
> [2244-SMHV0580N-S2-ND](https://www.digikey.com/products/en?keywords=2244-SMHV0580N-S2-ND)