The advantages of this connection method include simplicity, low cost, high reliability, and the ability to avoid failures caused by poor contact. However, a disadvantage is that interchange and maintenance may not be convenient enough. This method is generally suitable for cases where components have fewer external leads.
This method eliminates the need for connectors, as long as the external connection points on the PCB printed board are directly soldered to the components or other parts outside the board with wires. For example, the horn and battery box in a radio. It is important to pay attention to the interconnection welding of the circuit board.
1. The soldering wire pads should be positioned as close to the edge of the PCB printed board as possible and arranged in a uniform size to facilitate soldering and maintenance.
2. To improve the mechanical strength of the wire connection and prevent the wires from pulling off the pad or printed wire, drill holes should be near the solder joints on the PCB printed board to allow the wires to pass through the through hole. The wires should then be inserted into the pad hole from the component surface for soldering.
3. Wires should be neatly arranged or bundled and securely fixed to the board with wire clips or fasteners to prevent breakage due to movement.
PCB Cable Welding:
Two PCB boards can be connected using a flat cable, which provides reliability and is not prone to connection errors. The relative position of the two PCB boards is not restricted. This method is often used for connecting two printed boards at a 90-degree angle, creating an integral part of the PCB printed board after connection.
In more complex instruments and equipment, connector connections are commonly used. This “building block” structure ensures product quality, reduces system costs, and provides convenience for debugging and maintenance. When equipment fails, maintenance personnel do not need to check individual components, as they can simply identify the abnormal board and replace it, minimizing downtime and improving equipment utilization.
Printed Board Socket:
In more complex instruments and equipment, printed board socket connections are often used. This method involves creating a printed plug from the edge of the PCB board, designed to match a special PCB board socket. The plug part is gold-plated for improved wear resistance and reduced contact resistance. While this method offers easy assembly, good interchangeability, and maintenance performance, it can increase the cost of the printed board and require higher manufacturing precision.
Standard Pin Connection:
Standard pin connections are often used for external connections of printed boards, especially in small instruments. The two printed boards are connected through standard pins, typically in a parallel or perpendicular orientation, facilitating mass production.
WellCircuits Limited specializes in manufacturing high-precision double-sided, multi-layer, impedance-controlled, blind buried vias, and thick copper circuit boards. Our products include HDI, thick copper, backplanes, rigid-flex, buried capacitance, buried resistance, Golden Finger, and other types of circuit boards to meet various customer needs.
