Solderless breadboards are suited to low-frequency analog and digital circuits.

As a general guideline, reliable operation is typically limited to signals below 10 MHz. Above this, the parasitic capacitance and inductance of the contact springs and bare wires introduce noise, signal degradation, and unexpected behaviour.

General current guidelines allow for a maximum of 1 amp. Any current above this can cause voltage crops and excessive heat that can cause loss of spring tension and physical damage to the plastic housing.

For RF circuits, high-speed digital logic, or any application above 10 MHz, a soldered prototyping board or custom PCB is a better choice.