kicad/pcb_calculator/eserie_help.md

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E-series are defined in IEC 60063.
Available values are approximately equally spaced in a logarithmic scale.
E24(5%): 1.0 1.1 1.2 1.3 1.5 1.6 1.8 2.0 2.2 2.4 2.7 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1
E12(10%): 1.0 1.2 1.5 1.8 2.2 2.7 3.3 3.9 4.7 5.6 6.8 8.2
E6(20%): 1.0 - 1.5 - 2.2 - 3.3 - 4.7 - 6.8 -
E3(50%): 1.0 - - - 2.2 - - - 4.7 - - -
E1 : 1.0 - - - - - - - - - - -
- This calculator finds combinations of standard E-series (between 10Ω and 1MΩ) to create arbitrary values.
- You can enter the required resistance from 0.0025 to 4000 kΩ.
- Solutions using up to 4 components are given.
The requested value is always excluded from the solution set.<br>
Optionally up to two additional values can be excluded in case of component availability problems.
Solutions are given in the following formats:
R1 + R2 +...+ Rn resistors in series
R1 | R2 |...| Rn resistors in parallel
R1 + (R2|R3)... any combination of the above