How to choose a connector in daily use?

Jun 17, 2019

A useful order can be considered when selecting the correct connector for a particular circuit or a particular location in the system.

Although manufacturers provide detailed specifications for their products, it is still difficult to choose the best choice for a given circuit or system, and using a logical approach can be very helpful.

● What is a connector application: The first step in selecting or selecting a connector might be to define the purpose of the connector. Aspects such as board-to-board, cable-to-board, cable-to-board, etc., which require connectors, will determine many of its characteristics.

● Consider the current situation: the current level required by the connector will tend to control many overall characteristics. Low current connectors are often very different from the connectors required to carry high currents. The current that the connector needs to carry is one of the most important factors in selecting a connector. If large current levels are envisaged, then certain types of connectors will be suitable, and these connectors tend to be larger and smaller connectors can be used where smaller current levels are required.

● View the space and shape you need: The shapes and spaces available to the connector will also play an important role in the decision making process, which usually controls the type of connector used.

● Environmental requirements: Environmental requirements can play an important role in the selection of any connector. Many connectors are only suitable for benign environments, while other connectors may need to operate under conditions that must withstand harsher temperatures, humidity, vibration, and the like. In some cases, it may be necessary to seal the connector to reduce the effects of moisture ingress. Sometimes they may need to be waterproof if they are to withstand water and not just moisture. This needs to be seen as part of the decision making process.

Some connectors are less likely to experience a significant degree of vibration, but those that may experience vibration need to have constraints, locking mechanisms or some way to ensure they are not detached. Push-in connectors may be suitable for office or laboratory operations, but things that are often handled and moved in the vehicle need to be securely mated and held securely. It should also be remembered that the device will experience some vibration when it is delivered, and the connector should be chosen and remember this.

● Strain relief: Most connectors have some form of strain relief or are available as an option. Strain relief is especially needed where vibration can occur or where connectors need to be connected and disconnected.

● EMC and screening: In some cases, screening is required, especially for EMC requirements. Some connectors may choose to perform additional screening, or they may already be included.

● Voltage Considerations: It is always wise to check the rated voltage of the connector, especially if high voltage is used. In some cases, it may be necessary to leave a floating pin around any high voltage load pin.