High current photorelays designed for factory automation

27th March 2018

Toshiba

Lanna Deamer

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Toshiba Electronics has started to ship five new high current photorelays in DIP4 and DIP6 packages. These additions to its portfolio of photorelays incorporate MOSFETs fabricated with the latest U-MOS VIII process.

There are a total of five new photorelays (TLP3543A, TLP3545A, TLP3546A, TLP3556A and TLP3558A).

Together they offer multiple options, with an off-state output terminal voltage (VOFF) ranging from 30-200V and a steady on-state current (ION) from 0.7A to 5.0A - which is the industry’s highest rating in a DIP6 package. Designed for efficient operation RON values are as low as 20mΩ for the 30V version. When not in operation, the current draw (IOFF) is max. 1μA.

The new photorelays can replace 1-Form-A mechanical relays in various DC and AC applications, contributing to improved system reliability and reducing the space needed for relays and relay drivers. They deliver a rated operating temperature of 110°C (max), making it easier to accommodate temperature margins in system designs.

In addition, 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.

Designed primarily for rugged applications, the devices will be used for the replacement of mechanical relays in a wide range of factory automation and other industrial uses including industrial equipment, building automation, HVAC, semiconductor testing, ATE and security.