PhotoMOS® relays for automotive and industrial applications
PhotoMOS® relays with a MOSFET output enjoy an almost unlimited lifetime if used according to the specifications. Moreover, they are extremely reliable, unaffected by vibration, and their On-resistance remains stable throughout their entire lifetime. In addition to our broad product line-up for the industrial market, automotive-qualified types are also available.
The basic construction of the PhotoMOS® relay can be seen in the illustration. Light emitted from an LED on the input side passes through an isolator that is permeable to light and is detected by a solar cell. Via a trigger circuit, the solar cell‘s output voltage controls the gates of two source-coupled MOSFETs at the output. This arrangement allows PhotoMOS® relays to switch both AC and DC loads. The integration of MOSFET technology in PhotoMOS® relays significantly differentiates them from semiconductor relays with triacs or transistors at the output.
|PhotoMOS®, Phototriac Coupler, Solid State Relays - Catalog||Catalog||5MB||24.04.2020||English|
|PhotoMOS® selector guide||Relay||366KB||English|
|Cautions for use - PhotoMOS®||Relay||261KB||English|
|PhotoMOS® - Schematic and wiring diagrams||Relay||170KB||English|
|PhotoMOS® technical information||Relay||4MB||English|
|Short Form Relay||Catalog, Shortform||5MB||04.03.2021||English|
|Application Note: MSL Cross-Reference for SMT Devices||Flyer||1MB||26.01.2022||English|