Trend 1: From standard to customized
Traditional connectors are passive products. Manufacturers provide standardized products to customers. As electronic products diversify and more and more smart products emerge, such as robots and drones, manufacturers need more customized connector products. To meet the needs of the product, the connector product manufacturer needs to develop new products together with the customer to meet the shape and function needs of the customer to read, so the connector manufacturer needs to participate in the customer's design.
Trend 2, from single signal transmission to multi-signal transmission
Traditional connectors transmit only a single signal, such as video, control, or data signals. As electronic products become thinner and lighter, connectors move from a single signal to multiple signals, and the same cable can simultaneously transmit light, electricity, or other signals. It also helps to save space and improve system reliability.
Trend 3: From passive products to modular intelligence
In order to gain more profits, traditional connector manufacturers are turning connectors from a passive product to a modular product. For example, in the server cable provider, the connector will be intelligent, and the single cable will be changed by adding active ICs. Become a smart cable that can monitor data.
Apple's new MacBook release will allow consumers to quickly understand the USB Type-C interface. Given the all-round advantage of type-c over the old interface standard, after Apple became the first "crab-eating" vendor, other PCs And mobile phone manufacturers will quickly follow up. Under the leadership of Apple, the popularity of Type-C will be greatly accelerated.
Performance advantage: Type-C leads USB3.0 comprehensively, speeding up the process of device interface unification
Type-C can realize the thin and light products of smart phones, tablets, notebooks, etc., and integrate the power charging function and data (especially video) transmission functions into the same standard interface across devices, becoming the most promising cross-device. Unified USB interface standard. Compared to the USB 3.0 standard, Type-C performance has a comprehensive leading edge:
1) The Type-C opening is small, which is in line with the trend of thinning and thinning of smart terminals, and the support for the forward and reverse insertion functions will significantly improve the user experience;
2) Type-C transmission speed is fast, reaching 2 times of USB3.0;
3) The Type-C interface is uniform in size and has only one standard size, which can improve the uniformity of interfaces between different devices.
Development momentum: international big manufacturers work together to promote, Type-C products boom.
Environmental performance
Common environmental properties include temperature resistance, moisture resistance, salt spray resistance, vibration resistance and impact resistance.
1 temperature resistant. The current maximum operating temperature of the connector is 200oC and the minimum temperature is -65oC. Since the current generates heat at the contact point when the connector is in operation, resulting in a temperature rise, it is generally considered that the operating temperature should be equal to the sum of the ambient temperature and the junction temperature. In some specifications, the maximum temperature rise allowed by the connector at rated operating current is specified.
2 resistant to moisture. Intrusion of moisture can affect the insulation properties of the connector and rust metal parts. The constant damp heat test conditions are relative humidity of 90%~95% (up to 98% according to product specifications), temperature of +40±20oC, and test time of at least 96h according to product specifications. The alternating heat and humidity test is more stringent.
3 salt spray resistance. When the connector is operated in an environment containing moisture and salt, the metal structural member and the surface treatment layer of the contact may have galvanic corrosion and affect the physical and electrical properties of the connector. In order to evaluate the ability of electrical connectors to withstand this environment, a salt spray test is specified. It suspends the connector in a temperature-controlled test chamber and sprays it with compressed air at a specified concentration of sodium chloride solution to form a salt spray atmosphere. The exposure time is specified by the product specification for at least 48 hours.
4 resistant to vibration and shock. Vibration and shock resistance are important properties of electrical connectors. They are especially important in special applications such as aerospace and aerospace, railway and road transportation. They are important indicators for verifying the robustness and electrical contact reliability of electrical connectors. . There are clear regulations in the relevant test methods. The peak acceleration, duration and shock pulse waveform and the time of electrical continuity interruption should be specified in the impact test.
5 other environmental performance. Other environmental properties of the electrical connector are also sealed (air leakage, liquid pressure), liquid impregnation (resistant to specific liquids), and low air pressure, depending on the application requirements.
What brand of U disk is good? In the era of big data, what brand of U disk is a simple and practical mobile storage method, not only has a small and exquisite appearance and an easy-to-use operation mode, but its mobility characteristics are highly favored by consumers. However, as people's functional requirements for U disk are more and more subdivided today, the U disk types and brands on the market are dazzling, and the friends are naturally easy to see when they purchase. At this time we generally consider the following points.
When the power connector is selected for plating, the environment is mainly considered, and it is mainly divided into three cases:
For general applications, tin plating is the most common, because tin is cheaper, but the texture of tin is softer. To ensure good contact, high contact force (at least 100 grams) is required, and the number of insertions and removals is generally low. It has a simple protective anti-corrosion effect, low working temperature, brass or bronze tinning working temperature can reach 110 °C, steel tin plating can reach 190 °C. For high insertion and removal times, gold plating is generally required. For higher operating temperatures, other coatings are required, such as 340 degrees for copper nickel plating and 250 °C for brass or bronze.
1. Understand the type of mobile phone charger.
Mobile phone chargers generally have two charging measures, one is to charge with the machine (the charger is used to charge the battery through the electrical connector); the other is to charge the battery through the charging stand. Before purchasing, you should know the type, capacity and nominal voltage of your battery, so you can purchase the mobile phone charger that matches it.
2, refer to the voltage and current of the mobile phone charger
At present, almost all of the batteries used in mobile phones are lithium-ion batteries with a single cell, a nominal voltage of 3.6V, and a rated capacity of 500mAh to 1000mAh. Lithium-ion batteries have very high requirements on charging current and charging voltage; if the charging current is too large or the charging voltage is too high, the internal chemical reaction of the battery core will change greatly, causing the internal temperature to rise, resulting in damage to the electrode or diaphragm material or expansion of the battery core. explosion. Although the general mobile phone battery is equipped with a protector with overcharge, over discharge and overcurrent protection functions. Sometimes the poor quality of the charger connector can also cause safety problems with the Sunny connector. However, in order to achieve a good charging effect, a mobile phone charger with a maximum output voltage of 4.2V to 4.5V and a maximum output current of 600mA to 700mA should be purchased.
3, see if the mobile phone charger has a certification mark
When purchasing a mobile phone charger, you should read the product manual or product labeling instructions in detail. In general, mobile phone chargers with product certification marks are only guaranteed. Therefore, you should try to purchase products with product certification marks.
How to distinguish the quality of mobile phone charger? Just share it here. The standard mobile phone charger must have a certification mark. This is the first reference standard we have in the selection process. We have talked about the charger UL certification standard before, we can combine it to understand. In addition, it is recommended that you purchase the products in a well-reputed and large-scale electrical appliance store.
Electronic connectors are indispensable components in electronic equipment. They are widely used in both life and industrial production. It can be said that without electronic connectors, there is no modern and colorful life.
The main function of the electronic connector is to bridge the communication between the blocked or isolated circuits in the circuit, so that the current flows and the circuit realizes the predetermined function. The electronic connector greatly facilitates the assembly of the product, and can also bring benefits and convenience to people in various repairs and replacements. So although we rarely see the electronic connectors visually, we are often served by electronic connectors.
The materials used for electronic connectors generally include materials such as plastics that can be insulated, such as some conductor materials, such as phosphor bronze or brass. Of course, this part can also be made of some plastic materials. The quality of the products made by different materials is different and each has its own characteristics. Therefore, when we choose electronic connectors for different uses, we must select the right products according to the specific situation.
