Use of rectangular connectors

　　Rectangular connectorThe operating environment conditions of the rectangular connector ambient temperature: refers to the product should be used under the specified ambient temperature. Even if the outside temperature is not high, if the rectangular connector product works in the chassis, the heat dissipation condition is poor, and other components heat up, the ambient temperature of the product will be much higher than the outside ambient temperature. Use in excess of the specified ambient temperature can also cause damage to the metal coating or insulation. Moisture or water: Moisture or water will form a water film on the surface of the insulator, which will reduce the insulation performance and even cause misleading communication between adjacent contact parts. In general, connectors that are used for long periods of time in high humidity or in the presence of water should be sealed.

Low air pressure: air pressure will drop under high altitude conditions (except for constant pressure sealed warehouse). When the product is in a low pressure state, the medium pressure of the product will decrease. If the transmission voltage is higher than the technical condition of the product, electrical breakdown may occur, resulting in failure. Corrosive environment: refers to the atmosphere around the product at work, such as sea salt spray, such as acid and alkali chemical raw materials storage warehouse, these conditions will be rectangular connectors, insulators and other metal corrosion and erosion, in the choice of connectors, we can choose from the production of special requirements or meet the needs of these products.

Mechanical conditions: refers to vibration, impact, acceleration and other mechanical action, according to the micro rectangular connector sample parameters selected. In actual operation, the cable should be clamped or other methods to crimp the cable to the contact area and then fixed. When the cable is too long and without fixing measures, it may be affected by external forces (such as vibration and impact). In severe cases, the cable may be broken and the rectangular connector may be damaged.

Connection mode The connection mode here refers to the connection mode between the cable and the micro rectangular connector. Crimping: high mechanical strength, good electrical performance, high reliability. Welding: simple operation. However, it is easy to form welding methods, operating space and other reasons to make the weld is not easy to find. Contact resistance: The multi-point contact of the twisted-pin micro rectangular connector can better ensure the contact reliability. Rated voltage: The rated working voltage refers to the voltage that can be applied for a long time between mutually insulated components. If the micro-rectangular connector works for a long time above the rated voltage, it will cause the insulation material to fail and damage the connector.

Rated current, rated current and rated current value are determined during product design. Larger current will cause overheating and damage the formation of insulation faults. In use, the current can be increased. When achieving high reliability, attention should be paid to derating. Generally, 75 ~ 85% of the rated current. Insulation resistance: refers to the resistance value formed on the surface or inside of the insulator after it is charged. Insulation resistance is related to the materials selected and the environmental conditions used. Generally, it will be reduced when the temperature or humidity is high, and it should be used according to the regulations of the micro rectangular connector manufacturer.

Medium pressure: refers to the instantaneous communication and other interruptions that the contact parts between the insulation and the shell can withstand, such as instantaneous peak voltage breakdown, etc., and the insulation material, ambient temperature (high temperature unfavorable), humidity (humidity unfavorable), atmospheric pressure (low pressure unfavorable) are related, and miniature rectangular connectors should also be used according to the manufacturer's regulations.