Automotive relays refer to relays specially applied to electrical control in automobiles, which are one of the most widely used automotive electronic components after sensors in automotive products, such as power systems, safety systems, chassis systems, anti-theft systems, body systems, and driving information systems. These systems are controlled by car relays.

    In order to meet the increasingly stringent performance requirements, contact rivets made of AgSnO2In2O3 and AgSnO2 materials have been gradually introduced on the market, and are widely used in automotive relays.

    Contact rivets made of these materials have the following advantages:

    ① Good electrical life: During the use of the relay, the contact needs to withstand high frequency switching action, which is easy to wear. The high hardness and wear resistance of materials such as AgSnO2In2O3 and AgSnO2 make the contact rivets maintain a low wear rate during a long time of use, thus extending the service life of the relay. 

    ②Good resistance to large current impact: In automotive electrical systems, relays often need to withstand large current loads. When a large current continuously shocks the relay, the conductor will melt before the welded joint, thereby avoiding damage to the contacts caused by the inrush current. This excellent resistance to large current impact enables the contact rivet to maintain stable performance under high load conditions.

    ③ Excellent fusion weldability: During the working process of the relay, the contact may be affected by arc and other discharge phenomena and joule action, resulting in the surface of the contact melting. However, the high melting point and fusion welding resistance of materials such as AgSnO2In2O3 and AgSnO2 allow the contact rivets to maintain stable contact performance under these extreme conditions, thereby improving the reliability of the relay.

    ④ Short arc time: in the relay switching process, there will be an arc between the contacts. The presence of arc will not only cause damage to the contact, but also affect the switching speed of the relay. The fast thermal conductivity and excellent electrical properties of materials such as AgSnO2In2O3 and AgSnO2 make the contact rivets extinguish the arc in a short time, thereby reducing the damage to the relay contacts and extending the service life of the product.

——The content of the article comes from the Internet