Shanghai, China, July 17, 2025 – Toshiba Electronic Devices & Storage Corporation (“Toshiba”) today announced the launch of the TLX9165T, an automotive photorelay[1] in a 10-pin SO16L-T package that supports high-voltage automotive batteries with an output withstand voltage of 1800V (minimum). The product is available for mass shipment today.







Shorter charging times and longer driving range are crucial to the development and popularization of electric vehicles, and both require more efficient operation of battery systems. Battery management systems (BMS) monitor the battery charge status to achieve efficient system operation, while also monitoring the insulation between the battery and the vehicle body to ensure the safe use of high-voltage batteries. BMSs that need to handle high voltages are using electrically isolated photorelays.





Energy storage systems (ESS) also use a similar configuration to BMS to ensure efficient operation of renewable energy. Since energy storage systems also handle high voltages like electric vehicles, they are also one of the important application markets for electrically isolated photorelays.





Although 400V battery systems are currently the mainstream in electric vehicles, the growing demand for longer driving range and faster charging speeds will accelerate the transition to 800V battery systems. Photorelays used in these battery systems must have a withstand voltage of approximately twice the system voltage, so for 800V battery systems, the withstand voltage value needs to be above 1600V. Toshiba's new photorelay uses its latest high-voltage MOSFET and has an output withstand voltage of 1800V (minimum), suitable for 800V battery systems.





The photorelay's 10-pin SO16L-T package uses a resin with a comparative tracking index (CTI)[2] of 600 or more, which is a Class I[3] material in the IEC 60664-1[4] international standard, and its pin configuration ensures a creepage distance of 7.5mm or more on the optical receiver side[5] (Figure 1). These characteristics meet the IEC 60664-1 standard and provide an operating voltage of 1500V.





Figure 1: Pin configuration of the 10-pin SO16L-T package.





The pin pitch and pin configuration are the same as those of the SO16L-T package [6], allowing for common PCB pattern design.





Toshiba will continue to expand its photorelay products for battery systems for automotive applications and energy storage systems for industrial equipment, contributing to the safe operation of equipment.





Applications:

- Automotive equipment: BMS (battery voltage monitoring, mechanical relay sticking detection, ground fault detection, etc.)

- Industrial equipment: ESS

- Replacement for mechanical relays



Features:

- Output withstand voltage: VOFF = 1800V (minimum)

- Normally open (1-Form-A) device

- Avalanche current rating: IAV = 0.6mA

- Isolation high voltage: 5000Vrms (minimum)

- AEC-Q101 certified

- Compliant with IEC 60664-1 international standard



Main specifications:



(Unless otherwise specified, Ta = 25°C)



Device model



TLX9165T



Contacts



1-Form-A



Absolute maximum ratings



Input forward current IF (mA)



30



On-state current ION (A)



30



Operating temperature Topr (°C)



–40 to 125



Avalanche current IAV (mA)



0.6



Electrical characteristics



Off-state current IOFF (μA)



VOFF＝1500V

Maximum value

0.1

Output withstand voltage VOFF（V）

IOFF＝10μA

Minimum value

1800

Recommended operating conditions

Power supply voltage VDD（V）

Maximum value

1500

Coupled electrical characteristics

Trigger LED current IFT（mA）

ION＝30mA，t＝10ms

Maximum value

3

Return LED current IFC（mA）

IO FF = 100μA, Ta = –40°C to 125°C, t = 40ms



Minimum value



0.05



On-resistance RON (Ω)



ION = 30mA, IF = 10mA, t < 1s



Maximum value



340



Switching characteristics



On-time tON (ms)



IF = 10mA, RL = 20kΩ, VDD = 40V



Maximum value



1



Off-time tOFF (ms)



Maximum value



1



Isolation characteristics



Isolation voltage BVS (Vrms)



AC, 60s



Minimum value



5000



Clearance distance (mm)



Minimum value



8



Creep distance (mm)



Minimum value



8



Package



Name



10-pin SO16L-T



Dimensions (mm)



Typical value



10.3×10.0×2.45



Stock search and purchase



Buy online





Notes:



[1] Photorelay: The primary side (control) and the secondary side (switch) are electrically isolated. Switches directly connected to the AC line and switches between devices with different ground potentials can be controlled through the insulation layer.



[2] Comparative tracking index (CTI): IEC 60112[7] defines CTI as the maximum voltage that can be reached before an ammonium chloride solution drops on the surface of an insulating material and causes tracking under given test conditions.



[3] Class I material: A classification of molding materials in IEC 60664-1[4], materials with a comparative tracking index (CTI)[2] of 600 or above.



[4] IEC 60664-1: This standard specifies the principles, requirements and test methods for insulation coordination for systems up to 1000 V AC or 1500 V DC.



[5] Creepage distance of 7.5 mm or more: The creepage distance required for a working voltage of 1500 V, Class I material, and pollution degree 2 (the degree of pollution in the working environment where electrical equipment is used: the pollutants are completely non-conductive, but may become conductive due to condensation).



[6] SO16L-T: The package used in Toshiba's TLX9160T and TLX9152M.



[7] IEC 60112: An international standard that specifies test methods for measuring the comparative tracking index (CTI) of insulating materials. This standard is used to evaluate the electrical breakdown (tracking) characteristics of solid insulating materials.





Related Information



For more information on the new products, please visit the following website:



TLX9165T



https://toshiba-semicon-storage.com/cn/semiconductor/product/isolators-solid-state-relays/photorelay-mosfet-output/detail.TLX9165T.html





For more information on Toshiba isolators and solid-state relays, please visit the following website:



Isolators/Solid State Relays



https://toshiba-semicon-storage.com/cn/semiconductor/product/isolators-solid-state- relays.html





For more information about Toshiba Automotive Devices, please visit the following URL:



Automotive Devices



https://toshiba-semicon-storage.com/cn/semiconductor/product/automotive-devices.html





For availability of new products from online distributors, please visit the following URL:



TLX9165T



https://toshiba-semicon-storage.com/cn/semiconductor/where-to-buy/stockcheck.TLX9165T.html







*Company names, product names, and service names mentioned herein may be trademarks of their respective companies.



*Product prices and specifications, service content, and contact information in this document are current as of the date of announcement, but are subject to change without notice.





About Toshiba Electronic Devices & Storage Corporation



Toshiba Electronic Devices & Storage Corporation is a leading supplier of advanced semiconductor and storage solutions. The company has accumulated more than half a century of experience and innovation, providing customers and partners with outstanding solutions in the fields of discrete semiconductors, system LSI and HDD.



The company's 22,200 employees around the world are committed to maximizing the value of their products. Toshiba Electronic Devices & Storage Corporation attaches great importance to close collaboration with customers to promote value co-creation and jointly develop new markets. The company now has annual sales of more than 797.1 billion yen (US$4.96 billion) and looks forward to building a better future for people around the world and contributing to it.

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