Toshiba Electronic Devices & Storage Corporation has released the TLX9165T, an automotive photorelay in a 10pin SO16L-T package, designed for high-voltage automotive batteries with an output withstand voltage of 1800V (min). Volume shipments began today.
The TLX9165T supports 800V battery systems, which are increasingly adopted in electric vehicles to improve charge times and extend cruising ranges. Battery management systems (BMS) monitor battery charge status and ensure insulation between the battery and vehicle body for safety. Photorelays in these systems require a withstand voltage approximately twice the system voltage, or 1600V for an 800V system. The TLX9165T, with its newly developed high-voltage MOSFET, meets this requirement.
The photorelay is also suitable for energy storage systems (ESS) in renewable energy applications, which share similar high-voltage configurations. The 10pin SO16L-T package, with a Comparative Tracking Index (CTI) of 600 or more, falls under material group I of the IEC 60664-1 standard. Its pin configuration ensures a creepage distance of 7.5mm or more on the light receiver side, supporting an operating voltage of 1500V. The package matches the SO16L-T used in Toshiba’s TLX9160T and TLX9152M, enabling common PCB pattern designs.
Applications include automotive BMS for battery voltage monitoring, mechanical relay sticking detection, and ground fault detection, as well as ESS in industrial equipment. The TLX9165T is a normally open (1-Form-A) device, AEC-Q101 qualified, with a high isolation voltage of 5000Vrms (min) and an avalanche current rating of 0.6mA. Key specifications include a maximum input forward current of 30mA, ON-state current of 30mA, operating temperature range of -40 to 125°C, OFF-state current of 0.1μA at 1500V, ON-state resistance of 340Ω, and turn-on/turn-off times of 1ms each.
The TLX9165T is available for purchase through online distributors.
