# Capacitor, series abbreviations

**URL:** <https://forum.digikey.com/t/capacitor-series-abbreviations/72106>\
**Category:** Capacitors\
**Tags:** faqs\
**Created:** [September 20, 2026, 6:59pm UTC](https://forum.digikey.com/t/capacitor-series-abbreviations/72106 "2026-09-20T18:59:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mikemdfl25](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mikemdfl25](https://forum.digikey.com/u/mikemdfl25)\
**Post date:** [September 20, 2026, 6:59pm UTC](https://forum.digikey.com/t/capacitor-series-abbreviations/72106/1 "2026-09-20T18:59:12Z")

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I’m restoring an old Tektronix 500 series scope. I’m looking to replace several of the electrolytic capacitors. In the series column, I do not understand the abbreviations. I was wondering if there’s a chart or information explaining what each abbreviation means.

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**Author:** ![rick\_1976](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/rick_1976/32/1571_2.png) [@rick\_1976](https://forum.digikey.com/u/rick_1976)\
**Post date:** [September 21, 2026, 2:28pm UTC](https://forum.digikey.com/t/capacitor-series-abbreviations/72106/2 "2026-09-21T14:28:19Z")

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Greetings,

The “series” column is a container for whatever name the supplier chooses to give a particular product line. Its chief utility is for identifying similar/adjacent products of like kind, and has no technical significance unto itself.