How to choose the right car connector

How to choose the right car connector? Now let's have a look! It is very important to choose the car connector suitable for your own use, and many troubles can be avoided in future use, so how to choose?

The design of electronic system is becoming smaller and smaller, but the demand for power supply is growing, which brings great challenges to design engineers. This means that the car connector can accommodate two contradictory necessary conditions at the same time, that is, the design is more compact while increasing the power supply. When we choose the car connector, we have no way to start with a wide range of goods. What factors should we check in the selection of electric connector?

First, look at the rated current. It is the current that causes the specific temperature rise of the female terminal to be 20 ℃ or 30 ℃. To correctly use this data, we must not only understand its test method, but also pay attention to its test environment. For example, some simply test two connected female terminals and male pins that are not installed in the housing. It is well known that the temperature rise factors of automotive connectors include contact resistance, current and heat dissipation channels.

Secondly, from the perspective of manufacturing, most of the traditional automotive connectors are processed by lathe. Based on the increasingly mature stamping technology, new stamping formed electrical connectors have been derived. In contrast, the lathe processing process is relatively simple, the setting time of abrasive tools is short, and it is a more flexible production technology. Although the stamping forming process is expensive, its cost is equal to that of lathe processing when it is put into mass production, In particular, stamping forming technology allows local electroplating, which is an option that lathe processing cannot provide. From the perspective of quality, stamping forming ensures its quality stability under the condition of long-term mass production, which cannot be compared with lathe processing.

From the perspective of assembly, the methods of circuit board assembly include crimping, surface pasting or welding; The methods of cable assembly include screw connection, welding, winding, grinding and IDC (commonly known as puncture connection or insulation displacement connection). To select a suitable automobile connector, not only the price of the connector should be considered, but also the appropriate assembly technology. Naturally, welded connectors are cheaper than surface mounted and crimped connectors, because there is no need for high-temperature plastic shell, and there is no need for special crimping area of pins.

The key design of automobile connector lies in the contact formed by the female terminal and male pin. Poor design, manufacturing process and inappropriate base materials and electroplated coatings can lead to poor contact or even failure to form contact.