High-current photorelays target factory automation

High-current photorelays target factory automation

New Products |
Toshiba Electronics has launched five high-current photorelays that are designed to replace mechanical relays in a wide range of factory automation and other industrial uses.
By Rich Pell


The new photorelays will be available in DIP4 and DIP6 packages and add to Toshiba’s portfolio of photorelays using MOSFETs fabricated with the latest U-MOS VIII process.

The five relays (TLP3543A, TLP3545A, TLP3546A, TLP3556A and TLP3558A) offer off-state output terminal voltages (VOFF) ranging from 30V to 200V and a steady on-state current (ION) from 0.7A to 5.0A – the industry’s highest rating in a DIP6 package. RON values are as low as 20mΩ for the 30V version. When not in operation, the current draw (IOFF) is a maximum of 1μA. The photorelays have a rated operating temperature of 110°C (max).

Replacing 1-Form-A mechanical relays with photorelays improves reliability and reduces space. The new photorelays provide a rated transient/pulse on-state (IONP) current three times larger than the rated steady on-state current, contributing to design safety.


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