Toshiba’s tiny photorelays are rated to 135 °C for high-temperature test equipment

Toshiba has launched four voltage-driven photorelays in a small S-VSON4T package that are rated for operation up to 135 °C, targeting test and burn-in gear that has to run hot to evaluate automotive-grade semiconductors. The new parts are the TLP3407SRB, TLP3412SRB, TLP3412SRHB and TLP3412SRLB, and Toshiba says volume shipments have started.

As electrification and automated driving push higher-density electronics into vehicles, operating temperatures for automotive semiconductors—and the equipment used to test them—keep rising. Toshiba says it increased maximum operating temperature from 125 °C in current products to 135 °C by optimizing the design of built-in elements.

The new devices are voltage-driven photorelays with input-side resistors, eliminating the need for an external resistor and helping reduce board space. They’re also packaged in S-VSON4T, which Toshiba lists at 1.45 x 2.0 mm (typ.).

Toshiba is positioning the photorelays for use in semiconductor testers (memories, SoCs, LSIs), probe cards, and burn-in equipment where multiple relays must fit into limited space while maintaining reliable high-temperature operation.

Source: Toshiba