# Microchip Technology ATTINY25 question

**URL:** <https://forum.digikey.com/t/microchip-technology-attiny25-question/13721>\
**Category:** Integrated Circuits (ICs)\
**Tags:** microchip-technology, cross-reference, embedded\
**Created:** [April 19, 2021, 7:40am UTC](https://forum.digikey.com/t/microchip-technology-attiny25-question/13721 "2021-04-19T07:40:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![funhouse](https://avatars.discourse-cdn.com/v4/letter/f/b19c9b/32.png) [@funhouse](https://forum.digikey.com/u/funhouse)\
**Post date:** [April 19, 2021, 7:40am UTC](https://forum.digikey.com/t/microchip-technology-attiny25-question/13721/1 "2021-04-19T07:40:20Z")

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Hello, I am used to ordering this part 1611-ATTINY25V-10SH-ND but just been told that it’s not available or for backorder. I have been using it in a raspberry pi hat project and would like to know if there’s an equivalent available or something that will work?

Thanks, Stephen.

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**Author:** ![Rolf\_Horn](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/rolf_horn/32/52867_2.png) [@Rolf\_Horn](https://forum.digikey.com/u/Rolf_Horn)\
**Post date:** [April 19, 2021, 9:20am UTC](https://forum.digikey.com/t/microchip-technology-attiny25-question/13721/2 "2021-04-19T09:20:21Z")

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Sorry for the confusion Stephen,

this ordering part number **1611** -ATTINY25V-10SH-ND is just becoming obsolete, because the header number starting with **1611** was just used to indicate the transfer from the original manufacturer Atmel, that was acquired by Microchip and therefore that is no longer available for new backorders. Please use one of these actual MPN’s as drop-in replacement:

[ATTINY25V-10SSH](https://www.digikey.de/product-detail/de/microchip-technology/ATTINY25V-10SSH/ATTINY25V-10SSH-ND/2238283), [ATTINY25V-10SSN](https://www.digikey.de/product-detail/de/microchip-technology/ATTINY25V-10SSN/ATTINY25V-10SSN-ND/3046520) or [ATTINY25V-10SSNRCT-ND](https://www.digikey.de/product-detail/de/microchip-technology/ATTINY25V-10SSNR/ATTINY25V-10SSNRCT-ND/2774131).