In almost all electronic and electrical products, the board to board connector has become a necessary element to connect various components. The existence of connector is not only for the aspect of disconnection, but also the carrier for providing current and signal for products. In the process of using connectors, many designers of electronic systems have experienced similar experiences: using cheap connectors, paying a high price and even repenting. Wrong selection and use of connectors can cause system failure to operate normally, product recall, product liability cases, circuit board damage, rework and repair, and then lead to loss of sales and customers. Therefore, in the design of electronic products, we must choose a suitable connector for electronic devices, otherwise, the situation that a small board to board connector makes the whole system unable to work is very collapsing. When people choose connector, they will first consider the cost control, the other is the high quality, high stability, and the design characteristics of the connector itself. In order to avoid electronic designers from underestimating the importance of connectors in the design process, the manufacturers of board to board connectors provide some suggestions for you

First, the design idea of double pole. In Erni connector series, the design idea of double pole is throughout the whole process. Figuratively speaking, double pole design can be described as "killing two birds with one stone". The optimized terminal design adapts to high-speed signal transmission and provides higher orientation tolerance. In comparison of inductance, capacitance and impedance, the structure of double pole terminal is smaller than that of box type terminal for high-speed application and optimized to achieve minimum discontinuity. The dual pole design allows multiple connectors on a single board without plug-in or short-circuit problems, and there is no need for a large number of signals on a single connector. The simple wiring of double pole can save space, make the connector smaller, and simplify the detection of welding pin. For example, put 12 on one board. At the same time, it also reduces the rework cost. Practical applications such as telecommunication terminal user equipment.

Second: high retention surface mount design. For SMT products, it is generally believed that the retention force on the board is very poor. Is the retention force of PCB with surface mount termination lower than that of through-hole termination? The answer is: not necessarily. The retention force of PCB can be effectively improved by design improvement. If the welding bracket, the hole (micro hole) of surface sticking pin and large welding pad are superimposed, the retention force can be improved. In fact, even I / O connectors can use surface mount pins. This can be figuratively compared to "rooting". For example, X-ray machine, ultrasonic scanner, robot Ethernet switch design.

Third: robustness design. To determine the reliability of the connector, it is allowed to use the flat block crimping tool, and the plate is fixed on the shell to improve the firmness, achieve a better manufacturing process and increase the output. To sum it up in one word is "as firm as a rock". Specific applications such as positron emission tomography, embedded system of railway vehicles, etc.

Fourth: high current, small spacing design. With the requirement of miniaturization of automotive electronics and consumer electronics, it is necessary to consider the design concept of high current and small spacing.