Toshiba Releases Its First 200v Transistor Output Automotive Photocoupler

Category: Technology
Posted Nov 18, 2021 17:19 (GMT +7)

KAWASAKI, Japan--(BUSINESS WIRE)--Nov. 18, 2021

Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched a high voltage transistor output automotive photocoupler, “TLX9188,” for isolated signal communication in automotive equipment, including electric mobility vehicles. Volume shipments start today.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20211117005019/en/

Toshiba: a 200V transistor output photocoupler TLX9188 for automotive applications. (Graphic: Business Wire)

Toshiba: a 200V transistor output photocoupler TLX9188 for automotive applications. (Graphic: Business Wire)

TLX9188’s high voltage photo transistor delivers a collector-emitter voltage rating of 200V, 2.5 times higher than Toshiba’s current TLX9185A, a first for the company[1]. By specifying maximum values for switching characteristics (turn-on time, turn-off time), the new photocoupler can be used as a unidirectional switch. It can also be used in feedback circuits of analog signals in 100V to 200V equipment, helping to reduce the cost of application circuits.


[1] For an automotive photocoupler


Automotive equipment

  • Battery Management Systems: voltage monitoring, mechanical relay sticking detection, ground fault detection, etc.
  • Feedback of analog signals, etc.


  • High collector-emitter breakdown voltage: V(BR)CEO=200V (min)
  • High current transfer ratio: IC/IF=100% (min), rank GB
  • High isolation voltage: BVS=3750Vrms (min)
  • Wide operating temperature rating range: Topr= -40 to 125°C
  • AEC-Q101 qualified
  • IATF 16949 certified

Main Specifications

(Unless otherwise specified, @Ta=25°C)

Part number


Absolute maximum ratings

Input forward current IF (mA)


Collector current IC (mA)


Operating temperature Topr (°C)




Collector-emitter breakdown Voltage

V(BR)CEO min (V)


Ta= -40 to 125°C


Dark current ICEO max (μA)




electrical characteristics

Current transfer ratio IC/IF min (%)

@IF=5mA, VCE=5V,

rank GB


Saturated current transfer ratio IC/IF(sat)

min (%)



rank GB


Collector-emitter saturation voltage VCE(sat)

max (V)

@IC=2.4mA, IF=8mA


OFF-state collector current IC(off)

max (μA)

@VF=0.7V, VCE=200V




Turn-on time tON max (μs)

@RL=1.9kΩ, VCC=5V,



Turn-off time tOFF max (μs)




Isolation voltage BVS min (Vrms)




4pin SO6

Size typ. (mm)


Sample Check & Availability

Buy Online

Follow the link below for more on the new product.

Follow the link below for more on Toshiba’s photocouplers.
Isolators/Solid State Relays

Follow the link below for more on Toshiba’s automotive devices.
Automotive Devices

To check availability of the new product at online distributors, please visit:
Buy Online

Customer Inquiries
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-44-548-2218

* Company names, product names, and service names may be trademarks of their respective companies.
* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation, a leading supplier of advanced semiconductor and storage solutions, draws on over half a century of experience and innovation to offer customers and business partners outstanding discrete semiconductors, system LSIs and HDD products.

The company's 22,000 employees around the world share a determination to maximize product value, and promote close collaboration with customers in the co-creation of value and new markets. With annual sales now surpassing 710-billion yen (US$6.5 billion), Toshiba Electronic Devices & Storage Corporation looks forward to building and to contributing to a better future for people everywhere.

Find out more at https://toshiba.semicon-storage.com/ap-en/top.html

View source version on businesswire.com: https://www.businesswire.com/news/home/20211117005019/en/

Media Inquiries:
Chiaki Nagasawa
Digital Marketing Department
Toshiba Electronic Devices & Storage Corporation
Tel: +81- 44-549-8361

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