New photo relay offers 1.2A on-state current rating

07-06-2021 | Toshiba | Connectors, Switches & EMECH

Toshiba Electronics Europe GmbH has strengthened its comprehensive optoelectronics portfolio with a new photo relay. Supplied in a compact DIP6 package, the TLP4590A offers engineers a more convenient and reliable alternative to conventional mechanical relays. This 1-Form-B (normally closed) photo relay provides an on-state current rating of 1.2A, representing a 140% improvement on the company’s previous-generation TLP4176A device. Also, it has a 60V off-state output terminal voltage rating. Its sensitivity is enhanced due to the low trigger LED current of 2mA (maximum) exhibited.


Among the key applications for these photo relays are those relating to building automation – including heating, ventilation, air conditioning and security systems, as well as fire alarms. They can also be employed in various forms of industrial equipment, such as programmable logic controllers, I/O interfaces and sensor control hardware. Their 5,000Vrms (minimum) isolation voltage enables them to be applied in situations where elevated levels of insulation performance are needed. At the same time, support for a -40C to 110C operational temperature range allows them to be installed in harsh environments.

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