# Resistance ending with "r"

**URL:** <https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149>\
**Category:** DIY STUFF\
**Created:** [October 27, 2021, 3:36pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149 "2021-10-27T15:36:34Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![essan](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/essan/32/17625_2.png) [@essan](https://lookmumnocomputer.discourse.group/u/essan)\
**Post date:** [October 27, 2021, 3:36pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/1 "2021-10-27T15:36:34Z")

</div>

hello there !  
[cem 3340 diy simple](https://www.lookmumnocomputer.com/projects#/cem-3340-diy-simple)  
on this tutorial, they talk about resistor values that are ending with “r”  
like 620r ? i don’t know what is that, and no one around me currently understands this…

I hope u can help me thank you !

---

<div class="post-metadata">

**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\
**Post date:** [October 27, 2021, 3:39pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/2 "2021-10-27T15:39:57Z")

</div>

it’s for ohm, so 620R = 620 ohms

---

<div class="post-metadata">

**Author:** ![essan](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/essan/32/17625_2.png) [@essan](https://lookmumnocomputer.discourse.group/u/essan)\
**Post date:** [October 27, 2021, 3:40pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/3 "2021-10-27T15:40:49Z")

</div>

but why ? can’t he just write "620 ohms " ?

---

<div class="post-metadata">

**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\
**Post date:** [October 27, 2021, 3:41pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/4 "2021-10-27T15:41:31Z")

</div>

it’s more short to write on schem or stripboard

---

<div class="post-metadata">

**Author:** ![essan](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/essan/32/17625_2.png) [@essan](https://lookmumnocomputer.discourse.group/u/essan)\
**Post date:** [October 27, 2021, 3:42pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/5 "2021-10-27T15:42:13Z")

</div>

okay, thanks a lot !

---

<div class="post-metadata">

**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [October 27, 2021, 3:42pm UTC](https://lookmumnocomputer.discourse.group/t/resistance-ending-with-r/4149/6 "2021-10-27T15:42:13Z")

</div>

R is easier and takes up less space on schematics. It’s also easier than Ω which is the official symbol, but I need to switch to a Greek keyboard layout to type it.