Selection of terminal connectors
In selecting terminal connectors, in general, eight aspects need to be noted, as follows:
1. Remember performance requirements
When selecting, specify the performance requirements of the product. For example, how many signals are there? What are the current, frequency and voltage they carry? Is the connector signal required to be analog or digital, or a combination type? Because the signal combination will affect the connector type, pin arrangement and routing. For example, high-frequency signals may require a coaxial connection, while low-level analog signals may need to be shielded.
2. Consider current rating and operating voltage
The current rating is one of the key indicators for purchasing terminal connectors. It is a measure of the amount of current that can flow through the mating terminals. Ideally, it is expressed in amperage of each circuit. It should be based on the temperature rise of the adjacent terminals. The number of circuits in the housing to adjust or reduce the current.
3. Check space limitations
The size and weight of the terminal connector decreases as the available space decreases. However, their ability to withstand the increase in mating and mismatching frequencies has greatly increased, so depending on what is applicable to your project and its design requirements, you may need to look for more options in the terminal connector.
4. Verify the operating temperature range
Most electrical connectors are affected by extreme conditions such as vibration and shock, while cable connectors and terminal connectors designed for extreme conditions and hazardous environments have special functions to resist vibration and shock and withstand extreme temperatures. Therefore, the appropriate terminal connector can be selected according to the location of the terminal connector, the vicinity of the heat source, the operating temperature, and the frequency of mating and unmating.
5. Confirm the reliability level
It is a big mistake to choose a terminal connector product without considering its reliability. However, reliability is a complex concept and depends on several factors. The exact number is difficult to determine, but some connectors have specifications for mean time to failure. This can be used as a guide for choosing the right connector for any application.
6. Ensure a good environmental seal
Certain environments need to prevent the intrusion of flammable or flammable gases, vapors, dust or liquids. The terminal connector has environmental sealing performance, which can effectively prevent accidental splashing. Once you know the required security level, you can verify the IP rating number in the IP code system and learn whether the correct terminal connector has been selected.
7. Factors of materials and plating
Generally, terminal materials and electroplating are the last factors we have to consider. Since most terminal products are made of nylon plastic, they have a high flame continuity flammability rating. Available standard options include tin, lead and selected gold, suitable for most applications. The base material is usually made of phosphor bronze or brass, because even if they are exposed to high ambient temperature for a long time, they have excellent
Strength and current carrying capacity.
8. Calculate pricing
The price of the connector is usually calculated based on the total cost including the socket and plug, the cost of the terminal connector, and the labor cost of connecting the wire to the terminal and inserting it into the housing. So the most important standard will determine the type and size of the electrical connector. Other factors to consider here include operating voltage, wire size, configuration, meshing force, and circuit size.
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