Toshiba Electronic Devices & Storage Corporation has introduced four new voltage-driven photorelays designed to support high-temperature operation in automotive and industrial equipment. The devices—TLP3407SRB, TLP3412SRB, TLP3412SRHB and TLP3412SRLB—are housed in the compact S-VSON4T package and offer a maximum operating temperature rating of 135°C. Volume shipments begin today.
The launch addresses growing thermal challenges in automotive electronics. Advances in electrification and autonomous driving are increasing component density within control units and power systems. As a result, onboard semiconductor devices are exposed to higher operating temperatures. Equipment used to test and validate these semiconductors, including testers, burn-in systems and probe cards, must also perform reliably under similar thermal conditions.
Toshiba said it raised the maximum operating temperature of the new photorelays from 125°C, typical of existing products, to 135°C by optimizing the design of internal elements. The enhancement enables stable switching performance in high-temperature environments, particularly during semiconductor evaluation and reliability testing.
The devices are voltage-driven photorelays with built-in input resistors. This design eliminates the need for external resistors, helping reduce component count and conserve board space. The small S-VSON4T package, measuring approximately 1.45 mm by 2.0 mm, further supports high-density mounting requirements.
The combination of elevated temperature tolerance, compact size and simplified circuit integration positions the new photorelays for use in automotive semiconductor testers and related equipment where multiple relays must operate within constrained layouts.
Toshiba stated it will continue expanding its portfolio of high-temperature-capable products to meet evolving automotive and industrial system requirements.
