Bring power into electronic devices while protecting them from harmful electromagnetic interference (EMI). Often used to convey power from wall outlets, there’s no need to wire your devices to an external power source. Instead, wire these connectors into your device with the terminals on the back of each connector. All of these connectors are compatible with standard IEC power cords. When selecting a connector, make sure the current is at or slightly above the requirements of your device for the best EMI filtering performance.

Some connectors accept a fuse (sold separately), which prevents short circuits and circuit overloads from damaging your device.

Add a spot on your circuit board for plugging in headphones and other audio equipment. To install these connectors, push their contacts through the holes in your circuit board, then solder them in place.

These connectors run the automated world, from robot arms and photoelectric sensors to PLCs, IO-Link devices, and Ethernet switches. The original metric circular connector, they continue to be the standard today. They screw together tightly to protect against contaminants and hold firm against high vibration. Each one has a coding that indicates a unique keyway, preventing mismated connection errors before they happen. The coding also tells you whether a connector can send power, control, or data. Some can send a combination of the three, reducing the need for multiple connectors.

The smallest metric circular connectors, these fit in tiny spaces and still stand up to water and vibration. Find them on crowded robot arms and dense IO-Link devices.