Pcb Connector

Posted by admin on Tuesday, October 27, 2009 · Leave a Comment

Pcb Connector

In today's circuit boards, copper is mostly used for interconnection of components in the substrate. Traditionally, copper is used as material for forming an electrical connection runway model increasingly exposed copper is not appropriate overlap and exposed to the air for a long period of time, copper is easily tarnished by oxidation. Here are corroded and thus loses its weldability. Due to this problem, different techniques are used to protect the copper tracks through holes and printed through holes (PTH). A method is coated with an organic layer, oxide layer and the coating method that some manufacturers use a long time. PCB organic coating, but simple in its implementation, and not recommended for long term use term due to the ability PCB Manufacturer of process control in thickness, composition and curing cycles. It may also cause unpredictable weldability gap. However, lead to the application, is widely used PCBs in the consumer today.

Oxide layer can protect the circuit from corrosion, however, fails to maintain the solderability PCBs. The most common long for manufacturers of PCBs is the process of coating metal which was common practice to weld and corrosion protection of the circuit before the implementation period was free of lead. So it was a key factor and plays an important role in the manufacture of double sided PCB and multi-layers (PTH) boards in the past. In particular, the weldable metal plates on the tracks is a common practice to offer protection to traces of copper welding. In addition, the added edge connector with spring contacts connector tabs anchor properly designed circuit boards are used for interconnecting modules in electronic equipment. These electrical contacts should have a high degree of wear resistance and low contact resistance. This will ensure precious metal plating on the contacts and the metal most commonly used is gold. Other metals used in the coating are the tracks, nickel, and in some cases, sheets of copper construct certain areas of the track.

About the Author:

Steven W has been writing articles for nearly 3 years. His research is in Printed Circuit Board. So come visit his website that discusses PCB Layout Services products and spin of prototype board such as Quick Turn PCB.

Article Source: ArticlesBase.com – Printed Circuit Board (PCB) Plating

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