Rigid PCB circuit board interconnection
Electronic components and electromechanical components have electrical contacts, two discrete contacts between the electrical connection known as the interconnection. Electronic devices must be interconnected in accordance with the circuit schematic in order to achieve the intended function.
A printed circuit board as a whole part of the machine, generally can not constitute an electronic product, there must be external connection problems. Such as between the printed circuit board, printed circuit board and the board outside the device, between the printed circuit board and the equipment panel, need electrical connection. Selection of reliability, process and economic best with the connection, is one of the important elements of printed circuit board design. There are many ways to connect outside the way, according to the different characteristics of flexible choice.
Circuit board interconnection way First, the welding method
The advantages of the connection is simple, low cost, high reliability, can avoid the failure caused by the failure; shortcomings are interchangeable, maintenance is not convenient. This approach is generally applicable to cases where the external lead of the component is less.
1, Rigid PCB wire welding
This method does not require any connector, as long as the wire Rigid PCB Rigid PCB on the external connection point and the board outside the components or other components can be welded directly. Such as speakers in the radio, battery boxes and so on.
Circuit board interconnection welding should pay attention to:
(1) Welded wire pads should be as thick as possible on the edge of Rigid PCB printed boards and in a uniform size for welding and maintenance.
(2) In order to improve the mechanical strength of the wire connection, to avoid pulling the wire or pull the wire or printed wire pulled, should be printed on the Rigid PCB Rigid PCB near the hole, so that the wire from the printed circuit board welding surface wear Through the hole, and then from the component surface into the pad hole welding.
(3) the wire arranged or bundled neatly, through the line card or other fasteners and plates fixed, to avoid the wire broken due to movement.
2, Rigid PCB cable welding
Two Rigid PCB Rigid PCB between the use of cable connection, both reliable and difficult to connect wrong, and the two Rigid PCB Rigid PCB relative position is not restricted.
Printed between the printed circuit board, this method is commonly used between the two printed circuit board for the 90-degree angle of the connection. Connected to become a whole Rigid PCB Rigid PCB components.
Circuit board interconnection way two: connector connection
In the more complex instruments and equipment, often use the connector connection. This "building block" structure not only to ensure the quality of product mass production, reducing the cost of the system, and for debugging, maintenance provides a convenient.
When the equipment fails, the service personnel do not have to check the component level (ie, check the cause of the failure, tracing the source to the specific components. This work takes a lot of time), as long as the judge which board is not normal Can be immediately replaced, in the shortest possible time to eliminate the failure, shorten the downtime, improve equipment utilization. Replacement of the circuit board can be carried out in ample time for repair, after repair as a spare part.
1, printed circuit board socket
In the more complex instruments and equipment, often use this connection. This method is made from the Rigid PCB Rigid PCB edge of the printed plug, plug part of the size of the socket, the number of contacts, contact distance, positioning hole location, etc., to make it with a dedicated Rigid PCB Rigid PCB socket match.
In the system board, the plug part of the need for gold-plated treatment, improve wear resistance, reduce contact resistance. This method is simple assembly, interchangeability, good repair performance, suitable for standardized mass production. The drawback is that the cost of printed circuit board, the manufacture of printed circuit board precision and process requirements are higher; less reliable, often due to the plug part of the oxidation or socket reed aging and poor contact. In order to improve the reliability of external connections, often with the same lead through the circuit board on both sides or both sides of the contacts in parallel lead.
Rigid PCB Rigid PCB connection method commonly used in multi-board structure of the product, the socket and the printed circuit board or the bottom plate has two types of reed and pin.
2, standard pin connection
This method can be used for printed circuit board external connection, especially in small instruments often use pin connection. Through the standard pin to connect two printed circuit board, two printed boards are generally parallel or vertical, easy to mass production.
Rigid PCB Circuit Board Interconnection
- Sep 27, 2017-
Rigid PCB circuit board interconnection