Industry's smallest photorelay package

Toshiba has added six products to its lineup of photorelays. Housed in a VSON4 package that measures 1.5 x 2.5 x 1.3mm - the industry's smallest for photocoupler products – the latest additions to the TLP34xx series offer low off-state capacitance, low on-state resistance and high voltage support.


The devices support trigger LED currents of 3mA and an isolation voltage of 300Vrms. By expanding the variation of voltage and C × R, the photorelays can support a variety of applications, including semiconductor testers, measurement equipment and automatic test equipment, as well as working as replacements to reed relays.

The new line­up includes the TLP3442, which gives a typical COFF of 0.3pF, and the TLP3431, which is suited for use in high ­frequency signal transmission with a typical RON of 0.8ohm.