Electronic components come in various sizes, from tiny surface-mount devices (SMDs) to larger through-hole components. The size of a component affects the space it occupies on a circuit board.

Tolerance indicates the permissible variation in the value of a component. For example, a resistor with a 10% tolerance may have a resistance value that can vary by up to 10% from the stated nominal value.

Electronic components like capacitors and inductors have frequency-dependent characteristics, affecting their behavior at different frequencies.

Many electronic components may change their characteristics over time due to aging. Understanding these changes is important for long-term reliability.

The manufacturing process used for electronic components can affect their performance and characteristics. For example, components can be made using different technologies, such as thin-film, thick-film, or integrated circuits.

The physical packaging of components can vary, such as DIP (Dual Inline Package), SMD, TO-220, and many others. Packaging can affect how a component is mounted on a circuit board.