The minijack 3.5mm is a popular connector used primarily for headphones although its functionality is much more varied.

It consists of a maximum of three connecting parts being the largest so-called mass or negative polarity and two of smaller size and located farther end of the connector, called living or positive that correspond to each channel, such three-part plug can transmit signals in two different channels, also known as stereo signals. It also exists in a mono minijack but version composed of only two parts, a body and a living or positive.

Although there are infinity tips as manufacturers or type of use, these are the most commonly tips used in the electronics industry, hardware or electricity.

1. Slot: Characterized by its flat and elongated tip.

2. Phillips: It may be the most used, its tip is shaped like a four-pointed star. Also called commonly screwdriver

3. Pozidriv: Like the previous model, but with a twist. Inside it has 4 slots in a star more.

4. Torx: Widely used in vehicles, its shape is a star with 6 points.

5. Security Torx: Same as above, but inside has a pin.

6. Hex: Point-shaped or hexagon Allen calls. Such tips are distinguished from the rest because they are able to withstand higher torque strength.