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Toshiba Electronic Devices & Storage Corporation Releases High-Current Photorelays for Factory Automation and Other Industrial Applications That Can Replace Mechanical Relays

News provided by Toshiba Electronic Devices & Storage Corporation
December 21, 2017 10:20 KST

TOKYO--(Business Wire / Korea Newswire) December 21, 2017 -- Toshiba Electronic Devices & Storage Corporation has today started to ship five new high-current photorelays in DIP4 and DIP6 packages, additions to its portfolio of photorelays incorporating MOSFETs fabricated with the latest U-MOS VIII process.

The new photorelays offer multiple options, with an off-state output terminal voltage ranging from 30 to 200V and a steady on-state current of 0.7 to 5.0A. They can replace 1-Form-A mechanical relays in various DC and AC applications, contributing to improved system reliability and reducing the space needed for relays and relay drivers. They deliver a rated operating temperature of 110°C (max), making it easier to accommodate temperature margins in system designs.

In addition, the new photorelays provide a rated transient on-state current three times larger than the rated steady on-state current, contributing to design safety.

The latest Gartner market report recognizes Toshiba as the leading manufacturer of optocouplers by sales in 2015 and 2016, with 23% sales-based market share in CY2016. (Source: Gartner, Inc. “Market Share: Semiconductor Devices and Applications Worldwide 2016” 30 March, 2017)

Toshiba Electronic Devices & Storage Corporation will continue to deliver products that meet the needs of customers by promoting the development of a diverse portfolio of photocouplers and photorelays tailored to market trends.


· Industrial equipment (PLC, I/O interface, contact output)
· Building automation systems (heating, ventilation and air-conditioning, thermostats, etc.)
· Semiconductor testers
· Test boards
· Security equipment
· Replacement of mechanical relays


· High on-state current: TLP3543A delivers a 5A (max.) steady on-state current, the industry’s highest[1] for photorelays in DIP6 package, and a transient on-state current of 15A (max.).
· Wide range of options for off-state output terminal voltage (30V, 60V, 100V, 200V)
· Operating temperature: 110°C (max.)
Main Specifications (To view the table, please visit

[1] As of December 20, 2017, Toshiba Electronic Devices & Storage Corporation survey.

Follow the link below for more on the new products and photorelays line-up.

Customer Inquiries:
Optoelectronic Device Sales & Marketing Dept.

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 combines the vigor of a new company with the wisdom of experience. Since being spun off from Toshiba Corporation in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 19,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 700-billion yen (US$6 billion) and to contributing to a better future for people everywhere.
Find out more about us at

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Toshiba Electronic Devices & Storage Corporation
Digital Marketing Department
Chiaki Nagasawa

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