# What does the I suffix call out for ISSI SRAM chip

**URL:** <https://forum.digikey.com/t/what-does-the-i-suffix-call-out-for-issi-sram-chip/163>\
**Category:** Integrated Circuits (ICs)\
**Tags:** part-numbering, issi-integrated-silicon-solution-inc, memory\
**Created:** [April 7, 2017, 6:41pm UTC](https://forum.digikey.com/t/what-does-the-i-suffix-call-out-for-issi-sram-chip/163 "2017-04-07T18:41:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Pat\_Sagsveen](https://avatars.discourse-cdn.com/v4/letter/p/ccd318/32.png) [@Pat\_Sagsveen](https://forum.digikey.com/u/Pat_Sagsveen)\
**Post date:** [April 7, 2017, 6:41pm UTC](https://forum.digikey.com/t/what-does-the-i-suffix-call-out-for-issi-sram-chip/163/1 "2017-04-07T18:41:00Z")

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What does the I call out for SRAM chip from ISSI, example number being   
[IS61LV25616AL-10TLI](https://www.digikey.com/en/products/detail/issi-integrated-silicon-solution-inc/IS61LV25616AL-10TLI/1557304)

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<div class="post-metadata">

**Author:** ![Pat\_Sagsveen](https://avatars.discourse-cdn.com/v4/letter/p/ccd318/32.png) [@Pat\_Sagsveen](https://forum.digikey.com/u/Pat_Sagsveen)\
**Post date:** [April 7, 2017, 6:42pm UTC](https://forum.digikey.com/t/what-does-the-i-suffix-call-out-for-issi-sram-chip/163/2 "2017-04-07T18:42:41Z")

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The I calls out an industrial grade temperature

See ISSI SRAM Part numbering guide on the digikey website for [706-1208-ND](https://www.digikey.com/en/products/detail/issi-integrated-silicon-solution-inc/IS61LV25616AL-10TLI/1557304?s=N4IgTCBcDaIOwAYBsBaAjGBAOFA5AIiALoC%2BQA)

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**Author:** ![Robert\_Fay](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robert_fay/32/6529_2.png) [@Robert\_Fay](https://forum.digikey.com/u/Robert_Fay)\
**Post date:** [April 17, 2017, 5:22pm UTC](https://forum.digikey.com/t/what-does-the-i-suffix-call-out-for-issi-sram-chip/163/3 "2017-04-17T17:22:13Z")

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Here is the full part number breakdown from ISSI.

 ![](https://global.discourse-cdn.com/digikey/original/1X/902a5e34757ed366beccf6f645d1759f59545e05.PNG)