High-current photorelay for test and control applications

May 09, 2014 // By Graham Prophet
Toshiba Electronics Europe has a small package size, high-current (3.3A max.) photorelay – the TLP3107. Housed in a 6.3 x 7.0 mm 2.54SOP6 package, the low on-state resistance and high permissible on-state current of the TLP3107 make it suited to testing applications, including power-line switching, feedback resistance switching and measuring-line switching.

Photorelays provide fast switching speed, high reliability, lower power consumption, and noise-free operation in a space-saving package, making them an alternative to mechanical relays. Consisting of a photo MOSFET optically coupled to an infrared light emitting diode, the new photorelay uses the latest generation trench MOSFET to realise an approximately 1.4 times higher on-state current than Toshiba’s existing product, the TLP3103. This performance, combined with a 3.3A (max.) output, will accelerate the replacement of mechanical relays in applications that require high density assembly. Replacing a 3A-capable DIP package with the 2.54SOP6 package reduces the assembly area by 40%, and the overall product height by half. Other features include trigger LED current of 3 mA (max); off-state output terminal voltage 60V (min); and isolation voltage 1500 Vrms (min).

Toshiba; www.toshiba-components.com