# Change resistor "properties" from SMT to feed-thru?

**URL:** <https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371>\
**Category:** Help\
**Created:** [February 21, 2021, 5:59pm UTC](https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371 "2021-02-21T17:59:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![anne](https://avatars.discourse-cdn.com/v4/letter/a/ccd318/32.png) [@anne](https://librepcb.discourse.group/u/anne)\
**Post date:** [February 21, 2021, 5:59pm UTC](https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371/1 "2021-02-21T17:59:31Z")

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I assume I need to activate a "hardware library ".  
Where do I start ?

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**Author:** ![EdizonTN](https://yyz2.discourse-cdn.com/free1/user_avatar/librepcb.discourse.group/edizontn/32/222_2.png) [@EdizonTN](https://librepcb.discourse.group/u/EdizonTN)\
**Post date:** [February 28, 2021, 9:24pm UTC](https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371/2 "2021-02-28T21:24:55Z")

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I don’t understand to your question, but try to do according to documentation: [LibrePCB User Manual](https://docs.librepcb.org/#gettingstarted-workspace)

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**Author:** ![Starbase101](https://yyz2.discourse-cdn.com/free1/user_avatar/librepcb.discourse.group/starbase101/32/254_2.png) [@Starbase101](https://librepcb.discourse.group/u/Starbase101)\
**Post date:** [May 6, 2021, 1:42am UTC](https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371/3 "2021-05-06T01:42:47Z")

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I agree, all the resistor “symbols” in the Passive \> Resistors library appear to be SMD chip components. There are no plain regular carbon film thru-hole devices, and all the schematic symbols are simple rectangles instead of the global standard of a “zig-zagged” line.

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**Author:** ![EdizonTN](https://yyz2.discourse-cdn.com/free1/user_avatar/librepcb.discourse.group/edizontn/32/222_2.png) [@EdizonTN](https://librepcb.discourse.group/u/EdizonTN)\
**Post date:** [May 6, 2021, 7:21am UTC](https://librepcb.discourse.group/t/change-resistor-properties-from-smt-to-feed-thru/371/4 "2021-05-06T07:21:57Z")

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For TH resistors, you can use my library [RoyalOhm resistors](https://github.com/EdizonTN/ROYALOHM.lplib) - contents carbon film fixed resistors 1/4W, but it is a testing library yet.

Global standard - We know two standards EU and US for electronic graphical symbol. Are based on the standards IEEE315 / IEC60617 resp.  
LibrePCB library can contains boths symbols. Which symbol you will use, depends on your selection → In schematic editor use “Add component” and select your preffered norms:  
 ![image](https://global.discourse-cdn.com/free1/uploads/librepcb1/original/1X/7aa358057868e8863f80fd6d1eb7b3fb2b97f6ef.png)