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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

December 20, 2017
Toshiba Electronic Devices & Storage Corporation

DIP4 and DIP6 packages

TOKYO—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


(min) (max) (max) (max) (typ.) (max) (max) (typ.) (max) (max) (min)
DIP6 TLP3543A 30 5 15 3 20 40 1 1100 5 0.5 2500
TLP3545A 60 4 12 3 35 60 1 640 5 0.5 2500
TLP3546A 100 3.5 10.5 3 50 80 1 450 5 0.5 2500
DIP4 TLP3556A 100 2 6 3 110 200 1 110 2 0.5 2500
TLP3558A 200 0.7 2.1 3 900 2000 1 110 1 0.5 2500


[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.

Tel: +81-3-3457-3431

*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.

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.