Electronic system design is becoming smaller and smaller, but the demand for power supply is growing, which poses a huge challenge to design engineers. This means that the electrical connector must accommodate two conflicting prerequisites at the same time, that is, the design of the power supply must be more compact. We are in the selection of electrical connectors, the face of an array of goods, it is no way to start. Below and Xiaobian to understand the next, look at the choice of electrical connectors to shut off what factors?
First, look at the rated current. It is to promote the mother terminal specific heating current, usually 20 ℃ or 30 ℃. To properly use this data, in addition to be aware of its test methods, but also pay attention to its test environment. For example: some simply test a pair of but not installed in the shell of the female terminal and male pin. As we all know, the impact of electrical heating factors, including contact resistance, current and cooling channels.
Secondly, from the production point of view, the traditional type of electrical connectors for most lathe processing. Based on the increasingly mature stamping technology, which derived a new generation of stamping of the electrical connector. In contrast, the lathe processing process is relatively simple, abrasive set time is short, is a more flexible production technology. Although the stamping process is more expensive, but in mass production, the cost and lathe processing comparable, especially the stamping technology allows partial plating, lathe processing can not provide options. From the quality point of view, in the case of long-term production, stamping to ensure a certain quality stability, which is lathe processing can not be compared.
Third, from the assembly point of view to explore the circuit board assembly methods are crimping, surface paste or welding; cable assembly methods are screw connection, welding, winding, grinding and IDC (commonly known as piercing connection or insulation displacement connection ). To select the right connector, not only to consider the price of the connector, the more important factor is the appropriate assembly technology. The solder connector is naturally cheaper than the surface mount and crimp connector because it does not require a high temperature resistant plastic housing and does not require a special crimp area.
Finally, the most critical design of the connector is the contact between the female terminal and the male needle. Poor design, process and discomfort of the base material, plating, can lead to undesirable contact or even unable to form contacts.