Since the development of the photovoltaic industry, technological transformations have emerged one after another. For photovoltaic connectors, it has only undergone two generations of changes, and perhaps "stable" is the way to develop. "Stable" means reliability and safety, which is closely related to the electrical connection skill level and experience of connector manufacturers. As a conductive medium, the strap touch finger is a specially formed elastic connection element, which can significantly improve the quality of electrical connection and energy transmission, so that the connector has a continuously low touch resistance.

Compared with the application of various types of strap contacts in industries such as power transmission and distribution, the strap contacts used by photovoltaic connectors are relatively simple. The "stability" of the photovoltaic connectors mentioned above means that the structure and shape of the photovoltaic connectors have not changed much in the past 20 years. One point is closely related to the fingers of the strap.

The strap finger has strict rules in terms of material, coating, type, size, positive pressure, device slot design, etc. according to different application environments. This article focuses on the analysis from the perspectives of scale cooperation and the overall process of the strap finger.