Toshiba Introduces New 1800V Photorelay for High-Voltage EV Batteries
Düsseldorf, Germany – July 31, 2025
Toshiba Electronics Europe GmbH Launches TLX9165T Photorelay
Toshiba Electronics Europe GmbH ("Toshiba") has launched the TLX9165T, a new automotive photorelay housed in a 10-pin SO16L-T package. This device supports an output withstand voltage of 1800V (min.) and is specifically designed to support the Battery Management System (BMS) of 800V high-voltage batteries used in electric vehicles (EVs) and Energy Storage Systems (ESS).
The widespread adoption of electric vehicles relies heavily on improving charging times and extending driving range. These factors necessitate more efficient battery system operation. Battery Management Systems (BMS) are integral to this efficiency, monitoring battery charge status and isolation between the battery and the vehicle chassis, which is crucial for the safe operation of high-voltage batteries. In BMS managing high voltages, electrically isolated photorelays are essential. Similarly, Energy Storage Systems (ESS), vital for renewable energy operations, employ comparable BMS configurations.
Photorelays commonly used in these battery systems must withstand voltages approximately twice that of the system; therefore, an output withstand voltage exceeding 1600V is required for an 800V system. The new Toshiba TLX9165T photorelay meets and exceeds this requirement. Equipped with a new high-voltage MOSFET, it achieves an output withstand voltage of 1800V (min.), making it particularly suitable for 800V systems.
The TLX9165T's 10-pin SO16L-T package integrates a resin with a Comparative Tracking Index (CTI) of 600 or higher, belonging to Material Group I of the international standard IEC 60664-1. Furthermore, its pin configuration ensures a creepage distance of 7.5mm or more on the light-receiving side, enabling an operational voltage of 1500V. The pin pitch and configuration are identical to existing Toshiba SO16L-T packages (such as the TLX9160T and TLX9152M), facilitating common use in printed circuit board designs.
The TLX9165T is a normally open (1-Form-A) component with a nominal avalanche current of 0.6mA (IAV) and a high isolation voltage of 5000 Vrms (min.). It is AEC-Q101 qualified and fully compliant with the international standard IEC 60664-1. Key applications for the TLX9165T include automotive equipment, such as BMS for battery voltage monitoring, detection of mechanical relay lock and ground faults, and as a replacement for mechanical relays.
[Image Description: A visual representation of the Toshiba TLX9165T photorelay, highlighting its high-voltage capabilities. It displays operating conditions such as "Voff=1800V (min)", "+125°C", and "-40°C", alongside a simplified circuit diagram indicating "BMS" (Battery Management System) and the product name "TOSHIBA TLX9165T".]
For more information on the TLX9165T photorelay and Toshiba's range of isolators, solid-state relays, and automotive devices, please visit: Toshiba Automotive Photorelay Information
About Toshiba Electronics Europe
Toshiba Electronics Europe GmbH (TEE) offers consumers and businesses across Europe a wide variety of hard disk drives (HDD) and semiconductor solutions for automotive, industrial, IoT, motion control, telecommunications, networking, consumer electronics, and white goods sectors. Beyond HDDs, the company's extensive portfolio includes power semiconductors and other discrete components, ranging from diodes to logic integrated circuits and optical semiconductors, as well as microcontrollers and application-specific standard products (ASSPs).
TEE also provides SCiB™ battery cells and modules featuring lithium-titanate (LTO) oxide for demanding applications and silicon nitride (SiN) ceramic substrates used in power semiconductor modules, inverters, and converters for their thermal dissipation and resistance characteristics.
TEE is headquartered in Düsseldorf, Germany, with subsidiaries in France, Italy, Spain, Sweden, and the UK, providing marketing, sales, and logistics services.
Visit Toshiba's websites for more information: www.toshiba.semicon-storage.com, www.scib.jp/en, and www.toshiba-tmat.co.jp/en/.
Contact Information
For Publication:
Toshiba Electronics Europe GmbH
Hansaallee 181, D-40549 Düsseldorf, Germany
Tel: +49 (0) 211 5296 0
Web: www.toshiba.semicon-storage.com/eu/company/news.html
Press Contact:
Michelle Shrimpton, Toshiba Electronics Europe
Tel: +44 (0)7464 493526
Email: MShrimpton@teu.toshiba.de
Published by:
Birgit Schöniger, Publitek
Tel: +49 (0)172 617 8431
Web: www.publitek.com
Email: birgit.schoeniger@publitek.com
July 2025 | Ref. 7625F
