High current photorelay for industrial designs

February 08, 2021 // By Nick Flaherty
High current photorelay for industrial designs
The TLP241B from Toshiba is a high-current 100V photorelay in a DIP4 package with a wide control range

Toshiba Electronics Europe has launched a high-current, 100V photorelay for industrial equipment such as programmable logic controllers (PLCs) and I/O interfaces, as well as building automation systems such as heating, ventilation and air conditioning.

Incorporating a U-MOS MOSFET gives the TLP241B higher current of on-state current rating of 2A (continuous) and 6A (pulsed) and a 40V to 100V range.

It is the first photorelay device on the market to have an off-state output terminal voltage spanning all the way from 40V to 100V. As a result, it has the capacity to replace larger scale electro-mechanical relays, providing a more reliable, cost-effective and space-saving alternative. By relying on a non-contact optical arrangement rather than moving parts, engineers can benefit from longer operational lifespan, reduced system complexity and more rapid responsiveness.

It also offers 5kV isolation capabilities, with an operating temperature range between -40℃ and 110℃ and is housed in a DIP4 package. Gull wing options are available for easier surface mount processes.


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