Pin arrangement and bus arrangement are two common mating components in electronic connectors, which are used to connect different parts of circuit boards or electronic equipment. According to their design, use and specifications, they have many different classifications. The following are some common needle arrangement and mother arrangement classifications:

Classification of needle arrangement:

Single row and double row: single row means only one row of pins, while double row has two rows of pins, which are usually used to connect more circuits or signals.

Direct insertion and surface mount (SMT): Direct insertion pins are inserted into the holes of the circuit board, while surface mount pins are soldered to the pads on the surface of the circuit board.

Pitch: Pitch refers to the distance between adjacent pins. Common pitches are 2.54 mm (0.1 inch), 2 mm, 1.27 mm, etc.

Length and shape of pins: The length and shape of pins will vary according to the specific use and design.

Maternal classification:

Single row and double row: Similar to needle row, the difference between single row and double row is the number of sockets.

Direct plug-in and surface mount (SMT): The direct plug-in bus is inserted into the hole of the circuit board, while the surface mount bus is soldered to the pad on the surface of the circuit board.

Pitch: Pitch is also an important parameter of nesting, which determines the compatibility between nesting and corresponding nesting.

Locking method: Some paimu designs have locking mechanism, which can provide a stronger connection.

Polarizing Key: In order to ensure the correctness of insertion, some row mothers are designed with guiding keys, and the parts corresponding to the row needles form a unique alignment mode.

In fact, there may be other classification parameters according to the design of specific applications and manufacturers. These are just some common classification methods.