# Can I substitute this resistor with one that has a different series code?

**URL:** <https://lookmumnocomputer.discourse.group/t/can-i-substitute-this-resistor-with-one-that-has-a-different-series-code/659>\
**Category:** DIY STUFF\
**Created:** [April 18, 2020, 8:25am UTC](https://lookmumnocomputer.discourse.group/t/can-i-substitute-this-resistor-with-one-that-has-a-different-series-code/659 "2020-04-18T08:25:44Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\
**Post date:** [April 18, 2020, 8:53am UTC](https://lookmumnocomputer.discourse.group/t/can-i-substitute-this-resistor-with-one-that-has-a-different-series-code/659/2 "2020-04-18T08:53:33Z")

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What’s the circuit? Resistors are resistors, and their main property is the nominal resistance. All other things depend on where the resistor is used:

- Tolerance (how important is the exact resistance value in the given circuit?).
- Footprint (if you have an existing PCB).
- Power rating (if exposed to enough voltage, and the resistance is low enough, it needs to be able to handle the current going through it)
- Temperature coefficient (if used in temperature-sensitive precision circuits, where the resistance value must change in the same way as other component values elsewhere in the circuit)
- Voltage rating (if using in high-voltage circuits)
- Packaging (if you’re using a machine to populate your PCBs)

For most cases, the first and maybe the second additional property is all that matters.

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