What role do electronic connectors play in the industry, can you be clear? With the growing popularity of china's smartphones, portable devices, wearables and other electronic products, narrow spacing board-to-board connector frequency has also increased. As consumers, the pursuit of cool product experience is never stopped demand, lighter and thinner products become the embodiment of the trend. However, for connector manufacturers, ensuring the reliability of internal connections to electronics becomes a challenge.
Generally speaking, the connector is used to connect two PCBs or PCBs and FPC, so that it can achieve mechanical and electrical connections, characterized by male and female connector pairing, so the connector's plastic body and terminals have strict mating requirements. As shown in the following image, it is a pair of BTB connectors that work together.
1, first of all, "soft", flexible connection, easy to install, removable and convenient.
2, today's board-to-board are ultra-low height, in order to achieve the goal of reducing the thickness of the fuselage, the world's shortest plate-to-board connector combination height of 0.6mm. Minimize product thickness to achieve the purpose of connectivity, which has more and more ultra-thin mobile phones on the market.
3, contact structure, with ultra-strong environmental resistance, not only soft, but also the use of high contact reliability of the "strong connection" in order to improve the combination of sockets and plugs, through the fixed metal parts and contact parts using simple latching mechanism, in the combination of force, at the same time, so that the locking has a more plug-in reality. At the same time, there are some manufacturers to provide dual contact structure, improve contact reliability
4, pin spacing is also getting narrower, the current mobile phone is mainly 0.4mm pitch-based, and now Panasonic, JAE and other manufacturers have developed 0.35mm pitch, should be the industry's narrowest spacing board-to-board connector, 0.35mm pitch is currently mainly used in Apple phones and domestic high-end models, its application will be the next two years of the big trend, it has the least volume, precision, high performance and other advantages, but the film and other supporting technology requirements are higher, This is where many connector manufacturers need to overcome, otherwise the yield will be very low.
5, in order to meet the requirements in the SMT process, the entire product terminal welding area is strictly required to have a good common denomination, usually the industry's specifications for co-face 0.10mm (max), otherwise it will lead to poor welding with the PCB and affect the use of the product.
6, ultra-narrow plate-to-plate connector on the plating process put forward new requirements, in the total height of 0.6mm, a single product less than 0.4 mm height of the product, how to ensure that the product gold-plated thickness and tin effect does not climb tin, become a small connector The most critical problem, the current industry common practice is to laser gold-plated layer stripping to block the upper tin path, so as to solve the problem of not climbing tin, but the technology has a disadvantage, is that when peeling gold, the laser will also damage the nickel-plated layer, so that copper exposed to air, This corrodes rust.
