1. Communication equipment: In communication equipment, S1M is commonly used to protect signal lines and data lines from damage caused by voltage spikes.

2. Automotive electronics: In key electronic systems such as automotive electronic control units (ECUs) and sensors, US1A can effectively prevent voltage spikes from affecting the system.

3. Power inverter: S1M is commonly used as a rectifier to convert AC power to DC power and provide stable output voltage.

4. LED lighting: In LED driving circuits, S1M can protect LED beads from voltage spikes and surges, extending their service life.

5. Industrial applications: In automated machinery and industrial control systems,  S1M can protect equipment from surges and other power interference.

https://www.weetcap.com/Diodes-Rectifiers/WEET_SMA_S1A_THRU_S1Y.html