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Add: No. 6, Hongan Road, Wusha Community, Chang 'an Town, Dongguan City

Introduction of round hole busbar needle coupler


Introduction of round hole busbar needle coupler

Round hole busbar Pin connector, English name: Pin Header.

This connector is widely used in electronics, electrical appliances, PCB board on the surface, its role is in the circuit is blocked or isolated between the circuit, play the role of bridge, take on the task of current or signal transmission. It is generally used with the exhaust bus to form a plate-to-plate connection. Or it can be used with the electronic wire harness terminal to form a plate-to-wire connection; It can also be used independently for board to board connection.

As the standards required by different products are not the same, there are also various types of standards for needle arrangement, which are classified according to the standards for electronic professional needle arrangement connectors:

According to the interval, it can be roughly divided into five categories: 2.54mm, 2.00mm, 1.27mm, 1.00mm and 0.8mm. According to the number of rows, there are single row of needles, double row of needles and three rows of needles. According to the packaging rules have SMT (horizontal paste/vertical paste), plug-in DIP (straight insert/bend insert); According to the device method: 180° marked with S, 90° marked with W, SMT marked with T.

Number of rows: single row, double row, three row, four row, maximum four row.

Pin number: 02 to80

Stitching: straight foot, bent foot, SMT; The size of the needle.

Dimension: dimension length, width, thickness, row spacing.

Intervals: 0.8, 1.0, 1.27, 2.0, 2.54 intervals.

Material: refers to the material of touch parts and surface treatment, insulator material.

Packing: in bubble shell, in roll bag, in bulk.

Materials: Needle insertion materials: brass or phosphor bronze; Insulator: Plastic UL94V-0.

Surface treatment: gold plating 0.8U, tin and nickel plating.

Processing process: The main processing process of needle arrangement is: first, the needle insertion is processed with brass (or phosphor bronze) as required.

As required, nickel plating is followed by gold plating, and then mold is used to process the insulator part. Finally, a ruler is pressed on the special equipment

It is required to insert the pin into the insulator.

Note: there are many factors affecting the price, generally the most influential ones are gold plating, needle length and so on.

Example of needle arrangement parameters

Round hole row features: single row and double row, straight needle and bent needle, needle spacing is 2.54mm and 3.96mm, a variety of needle length.

Row mother classification


1. According to the difference of spacing: score 0.8, 1.0, 1.27, 2.0, 2.54 intervals.

2, exhaust bus according to the height of plastic and whether with convex points to distinguish, convex points can be semi convex and full convex.

3. According to the number of rows: single row, double row, three rows or four rows, now only four rows can be better.

4. According to the device method, 180 degrees shall be marked with S, 90 degrees with W, SMT with T.

5. According to whether the demand is increased or whether the demand is with positioning column, there are two types of positioning column, one is internal positioning column, the other is ear positioning column.

Type of bar terminal: U terminal and Y terminal

U-shaped terminal, touch with three surface generally plastic concave and convex with U-shaped terminal

Y terminal, touch with 2 sides generally plastic high with Y terminal


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No.6, Hong'an Road, Wusha community, Chang'an Town, Dongguan City, Guangdong Province