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Toshiba’s New Photorelays with Low Trigger LED Current Contribute to Low Power Consumption in Battery-Powered Equipment

August 18, 2020


TOKYO— Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has launched two new photorelays "TLP170AM" and "TLP170GM" in a small 4-pin SO6 package, for security systems, building automation and other industrial equipment.

The new products feature a maximum trigger LED current of 1mA, which reduces input side power loss by increasing the sensitivity of the photodiode array. Using these photorelays for ON/OFF control in battery-powered security devices and various sensors contributes to lower power consumption and longer operation of devices.

TLP170AM has a rated OFF-state output terminal voltage of 60V and a constant ON-state current (ION) of 0.7A, with pulse operation of up to 2.1A. The TLP170GM is a 350V version with an ION of 110mA constant current and 330mA pulse operation.

The 4-pin SO6 package enables a minimum isolation voltage of 3750Vrms, allowing the devices to be used in equipment requiring high insulation performance.


  • Security systems
    Passive sensor (PIR[1]), etc.
  • Industrial equipment
    Programmable logic controllers, I/O interfaces, various sensor controls, etc.
  • Building automation systems
  • Replacement of mechanical relays


  • Low trigger LED current: IFT=1mA (max)
  • Small package: 4-pin SO6
  • High isolation voltage: BVs=3750Vrms (min)

Follow the link below for more on the new photorelays.



Follow the link below for more on Toshiba’s optical semiconductor device lineup.

Optical Semiconductor Devices

To check availability of the new products at online distributors, visit:



About Toshiba America Electronic Components, Inc.

Toshiba America Electronic Components, Inc. (TAEC), an independent operating company owned by Toshiba America, Inc., is the US based electronic components business of Toshiba Electronic Devices and Storage Corporation. TAEC offers a wide variety of innovative hard disk drive (HDD) products and semiconductor solutions for data center, automotive, industrial, IoT, motion control, telecom, networking, consumer, and white goods applications. The company’s broad portfolio encompasses enterprise and consumer HDDs integrated wireless ICs, power semiconductors, microcontrollers, optical semiconductors.

[1] PIR (Passive Infrared Ray): Sensors that detect human proximity through changes in ambient infrared radiation

* 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.

Information in this press release, including product pricing and specifications, content of services and contact information, is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable Toshiba product specifications.

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