Engineering library

Technical documentation

Reviewed references that connect formulas and standards to verifiable design decisions.

Level

9 references · 6 categories

Each preview opens a reviewed technical reference and the tool that applies its data when a calculator is available.

FundamentalsBeginner

SI prefixes and engineering notation

Pico-to-giga prefixes, powers of ten, engineering notation, writing rules and common electronics conversions.

ComponentsBeginner

IEC 60063 tables for E3 through E192, tolerances, decade scaling and selecting a preferred value.

ComponentsBeginner

Initial tolerance, TCR in ppm/°C, thermal drift, and calculating a resistor's minimum and maximum limits across its operating range.

ComponentsIntermediate

Rated voltage, DC bias, temperature codes, effective capacitance, and a method for reading manufacturer curves.

ComponentsIntermediate

A practical comparison of ceramic, film, aluminium electrolytic, polymer, tantalum, and supercapacitor technologies for selecting the right part.

FundamentalsBeginner

Resistivity, conductivity, temperature coefficient and typical values for conductive materials at 20°C.

Power & EnergyIntermediate

Diameters, cross-sectional areas, resistance and conversion formulas for sizing AWG conductors.

Signals & InterfacesIntermediate

A comparison of ITU, ISM, IEEE radar and NATO bands with ranges, wavelengths and representative uses.

Standards & SafetyBeginner

How to read both digits of an IP code, the test conditions, and the limits of protection against solids and water.

Associated toolReference sheet (no calculator)