Standoffs

What do standoffs do?

Standoffs create space between printed circuit boards and other components. This space prevents components from touching each other, which can cause short circuits. They also provide a firm attachment, especially when mounting a microcontroller in a housing. The extra space also allows for better air circulation. This is important for components that get hot, such as processors or voltage regulators.
When stacking multiple boards, standoffs are crucial. They provide a fixed distance, which keeps your layers firmly in place. This makes maintenance or adjustments easier, without having to take everything apart.

What materials and sizes are available?

The choice of a particular material depends on your project. Brass standoffs are strong, durable and conduct electricity well. They are suitable for permanent installations or use in combination with metal housings. Nylon standoffs are lighter and provide electrical insulation. This makes them ideal if you want to avoid short circuits or if weight is a factor.
Standoffs are all about the thread size. Common sizes are M2, M2.5 and M3. For a Raspberry Pi M2.5 is often used. For Arduino, sensors and displays, M3 is the standard. Always look carefully at the mounting holes in your PCB or housing. The size must be exactly right to prevent loosening or damage.

How to choose the right standoff?

First, consider the distance required. Do you only need some space to keep the PCB off the substrate? Then a short standoff will suffice. Do you have cables or connectors that need space? Then choose a longer version.
There are also different types of threads. Some standoffs have internal threads on both sides, so you can screw a screw into them on both sides. Others have a fixed pin with external threads on one side. You screw that directly into another component.
For common sizes such as M3, there are handy sets available. They contain multiple lengths, plus the right screws and nuts. This way you have everything at hand, especially if you are working on multiple projects at the same time. Don't forget to order enough mounting material at the same time. This prevents delays during assembly.

Why are standoffs so important?

Standoffs do more than just create distance. They improve safety, extend the life of your electronics and make your setup clear. By choosing well, you prevent damage, overheating and maintenance hassles. They are small parts, but they make a big difference.