# This is a TVS, right?

**URL:** <https://forum.digikey.com/t/this-is-a-tvs-right/46455>\
**Category:** Circuit Protection\
**Tags:** vishay-general-semiconductor-diodes-division, part-identification, transient-voltage-suppressors-tvs\
**Created:** [November 13, 2024, 9:17pm UTC](https://forum.digikey.com/t/this-is-a-tvs-right/46455 "2024-11-13T21:17:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Eddiie](https://avatars.discourse-cdn.com/v4/letter/e/a183cd/32.png) [@Eddiie](https://forum.digikey.com/u/Eddiie)\
**Post date:** [November 13, 2024, 9:17pm UTC](https://forum.digikey.com/t/this-is-a-tvs-right/46455/1 "2024-11-13T21:17:46Z")

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Hi,  
Can someone confirm this is a TVS, and which one?

 ![image](https://global.discourse-cdn.com/digikey/original/3X/9/c/9c255ef4a4dc352fd5b42deb87268b6593164938.jpeg)

I am remaking this PCB and the PCB making place says they cannot put the part on the provided area. I either have the footprint wrong or the part wrong. Or possibly both.

Something with this footprint…

 ![image](https://global.discourse-cdn.com/digikey/original/3X/6/6/660200903519a11249cfdc4723d252f003cfa9a6.png)

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**Author:** ![David\_1528](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/david_1528/32/47212_2.png) [@David\_1528](https://forum.digikey.com/u/David_1528)\
**Post date:** [November 13, 2024, 9:43pm UTC](https://forum.digikey.com/t/this-is-a-tvs-right/46455/2 "2024-11-13T21:43:35Z")

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Hi [Eddiie](https://forum.digikey.com/u/Eddiie),

Yes, that’s a unipolar TVS. Pretty certain it’s an SMA package, and that logo is the old General Semiconductor logo, now part of Vishay.

“AE” refers to 5.0V, so the [SMAJ5.0A-E3/61](https://www.digikey.com/en/products/detail/vishay-general-semiconductor-diodes-division/SMAJ5-0A-E3-61/1091511) seems like the part in question.

From [datasheet](https://www.vishay.com/docs/88390/smaj50a.pdf):

 ![image](https://global.discourse-cdn.com/digikey/original/3X/9/8/98d87d7ffc4324dd074a9226cf042157187d0ac5.png)
