E-Series Value Picker (E24 / E96 / E192)
Given a target resistance, find the nearest E24/E96/E192 value and search series/parallel pairs that approach it — turn an odd value into something you can actually buy.
Key points
E-Series Value Picker (E24 / E96 / E192): Given a target resistance, find the nearest E24/E96/E192 value and search series/parallel pairs that approach it — turn an odd value into something you can actually buy. Formula: E96 has 96 steps per decade, adjacent ratio 10^(1/96) ≈ 1.0237. Enter parameters on the DD-CAT IDE online tool page to get results instantly, with a calculation-model diagram that updates with the inputs. E96 steps are about 2.4% apart and match 1% resistors; E24 steps are about 10% and match 5% parts. Add the resistor tolerance to the pair error — only 0.1% parts make a precise combination meaningful.
Inputs
E96 has 96 steps per decade, adjacent ratio 10^(1/96) ≈ 1.0237Calculation model (updates with parameters)
| Nearest standard value | 1.87 kΩ | 相对target +0.000% |
| Within the allowed error | pass（≤0.50%） | |
| Neighbouring values | 1.82 kΩ ｜ 1.91 kΩ | One step below / above |
| 最佳Series组合（error 0.053%） | 499 Ω + 1.37 kΩ = 1.869 kΩ | |
| 最佳Shunt组合（error 0.000%） | 3.74 kΩ ∥ 3.74 kΩ = 1.87 kΩ | |
| Adjacent ratio | ×1.0243 | E96 每十进制 96 档 |
Engineering notes
- E96 steps are about 2.4% apart and match 1% resistors; E24 steps are about 10% and match 5% parts.
- Add the resistor tolerance to the pair error — only 0.1% parts make a precise combination meaningful.
FAQ
- What is E-Series Value Picker (E24 / E96 / E192) for?
- Given a target resistance, find the nearest E24/E96/E192 value and search series/parallel pairs that approach it — turn an odd value into something you can actually buy.
- What is the formula for E-Series Value Picker (E24 / E96 / E192)?
- Core formula: E96 has 96 steps per decade, adjacent ratio 10^(1/96) ≈ 1.0237. The tool returns results instantly using this formula and the selected parameters.
- What engineering notes should I keep in mind when using E-Series Value Picker (E24 / E96 / E192)?
- E96 steps are about 2.4% apart and match 1% resistors; E24 steps are about 10% and match 5% parts. Add the resistor tolerance to the pair error — only 0.1% parts make a precise combination meaningful.