Connector that cannot be ignored(China PCB show news)

21 Jul 2019

Connectivity is the lifeblood of today's technology-driven world. The term covers many aspects, from the Internet and data networks to a variety of home appliances and devices. According to statistics, the overall China PCB show market size of global connectors is expected to reach 60 billion US dollars by 2020. Among them, automotive, communications, computer and peripherals, industrial and military industries are the top five application areas of connectors, accounting for 76% of the total market.

As technology continues to advance, any design requires the interconnection of components to become increasingly important. While all of the design engineer's design projects can rely on their favorite connectors beforehand, engineers need to find new, better-performing connectors to optimize designs and ensure optimal China PCB show results for increased bandwidth and elimination of crosstalk or environmental impact. Connectors have never been more useful in successful embedded system design.

Connector integrity and performance requirements are increasing

Prior to today's high-speed design requirements, the main potential China PCB show barrier to connectors was the physical aspects of their design, such as stack height, board distance, current requirements, process and operating temperatures.

As system speeds increase, interconnect designs are no longer based solely on mechanical requirements. Now, you should also consider some additional electrical China PCB show performance issues. Today's designers must consider issues such as crosstalk, skew, and propagation delay. Give a few examples.

The successful design of any connector requires an appropriate balance between maximum physical and mechanical strength while optimizing signal integrity. China PCB show Connectors are an important part of the signal transmission chain and should not be overlooked when designing high-speed systems. In fact, the design and manufacture of China PCB show connectors should be part of the overall system-level design process.

Increase bandwidth requirements

Increasing bandwidth requirements require connectors to handle increasingly high data transfers for all types of applications. Cutting-edge China PCB show technology is now not only in military and aerospace design. From cars to consumer IoT devices, we are pursuing cutting-edge technology. Today's rapidly growing bandwidth demands challenge the ability to leverage traditional design methods of existing technology components. While connectors are generally considered to be China PCB show "passive components" for many products, they need to follow the same design criteria as all other elements in any high speed/high bandwidth product.

Electrical performance issues to consider


Crosstalk is an undesirable mode of transmission of electrical signals between two or more transmission media due to inductive or China PCB show capacitive coupling. Crosstalk can also result from non-uniformities in the transmission medium and tilting effects in the signal transmission pair. At high speeds, the circuit generates electrical noise, affects signal crosstalk, and can create China PCB show electromagnetic interference noise that interferes with other circuits. This means that signal integrity and reliability are very important performance.

Historically, crosstalk was caused by cables, but as LAN speeds increased and cable quality improved, other channel components began to have an China PCB show impact on crosstalk performance. Connector crosstalk can be a considerable problem.

Skew or propagation delay

The inner pair and the inter-pair skew respectively describe the difference in propagation delay between electrical signals within the signal line pair and between two or more signal line pairs in a cable. Both will affect the available bandwidth. Intra-frame skew can cause signal distortion, and a reduction in transmission China PCB show bandwidth results in higher electromagnetic radiation and lower noise immunity. Since, as with most multi-channel data bus systems, all data must be active at the same time, the skew of the pairwise pairs results in a reduction in bandwidth. Both of these China PCB show problems may be affected by differences in the mechanical length of the signal to the inner conductor or different dielectric constants, mainly in connectors of 90°.

the effect on the environment

Many of us work in a normal China PCB show environment, and the surrounding equipment and appliances don't feel uncomfortable. Most electrical and electronic systems and machine operating conditions are complex and demanding.

If the connector needs to be in a harsh working environment, the designer should pay attention to the choice of connector and check the China PCB show manufacturer's IP rating to provide the appropriate sealing performance over a range of angles, depths, and operating times. You should also consider the end-use environment of the connector and compare the scenario to the specifics of the China PCB show connector's IP rating. Most IP tags have specific conditions, but each manufacturer may have a different definition of the IP 68 class.

Therefore, when looking for connectors with IP 68 seal ratings, the design engineer should ensure that the manufacturer's IP 68 China PCB show rating is accurately queried. For example, a system that is submerged at 2 meters for 24 hours has a different effect on the connector than a 24 hour at 120 meters, but both cases can be defined as IP 68.

Choose the right connector

When selecting connectors for high speed performance and PCB end, the connectors must be evaluated based on their actual use. The data China PCB show performance of the connector meets the requirements, but it may be far from the performance achieved in real-world applications.

The choice of laminates is an increasingly important factor in cable and connector design. While FR-4 is not the best laminate choice China PCB show for high speed/high bandwidth designs, it is still the first choice for many product developers due to its low cost and wide availability.

All connectors need to meet the wiring requirements. For example, if 16 layers of wiring are required, the design engineer must ensure that the China PCB show connectors used will design many systems by themselves. That's why it's important to have a thorough understanding of the PCB to which the connector is connected, taking into account factors such as design optimization, manufacturability, and China PCB show end product realization.

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