First of all, we must understand the current carrying current and voltage requirements of the high-current D-SUB connector contacts. The current carrying capacity of the connector is usually determined by the size of the wire and the contact. The rated voltage is determined by the contact spacing and insulating material. Therefore, it is necessary to ensure that the contact meets the size of the supporting conductor to avoid overheating.
It is very important to understand how connector manufacturers specify the rated current and working voltage of their products. The test level and data can refer to the manufacturer’s standards, but the test standards used by different manufacturers are very different. Therefore, when checking the current rating, first observe the temperature rise specification of the connector. This surface is the high current D-SUB connector. The heat dissipation value at a specific current value.
Since the connector has many types of terminations, the use of soldered contacts helps prevent the ingress of dust and moisture. The other is crimping, which is convenient for on-site maintenance, such as compressing terminals for winding connections, direct connections, loop connections, eye-shaped connections, etc. In addition, the type of termination required for the connector depends on the size, type, and voltage and current of the cable.
Since the use of the connector is affected by various application environments such as moisture, temperature, vibration and shock, it is necessary to be very cautious when choosing a high-current D-SUB connector, and clarify the mechanical and environmental performance of the high-current D-SUB connector. The shell type ensures reliable connection performance and avoids the influence of undesirable factors such as short circuit.
Because the price of the high-current D-SUB connector is mainly determined by the hardware itself, the manpower and materials required for assembly and maintenance. Therefore, don't covet small bargains. Choosing a cheap high-current D-SUB connector must be decided based on many aspects such as cost.