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Toshiba Debuts Photovoltaic Couplers in Small-Size SO6 Packages

New Applications Addressed with Increased Operating Temperature Ranges and Isolation Voltages

IRVINE, Calif., Aug. 28, 2014 /PRNewswire/ -- Toshiba America Electronic Components, Inc. (TAEC)*, a committed leader that collaborates with technology companies to create breakthrough designs, today announced the launch of two new photovoltaic couplers housed in small-size SO6 packages: the TLP3905 and TLP3906. The new photocouplers are designed for use in measuring instruments or as MOSFET gate drivers for the replacement of mechanical relays.

Photovoltaic couplers can be used to create a MOSFET gate driver without using an external secondary-side power supply. The structure of a photovoltaic coupler is a photorelay without a MOSFET chip. Users can create an isolated relay by combining the photovoltaic coupler with an external MOSFET of their choice. This combination makes it possible to realize larger voltages and currents for solutions that are not covered under the existing photorelay line-up. The new photocouplers consist of an infrared light emitting diode optically coupled to a photodiode array. The photodiodes are connected in series, making the TLP3905 and TLP3906 suitable for MOS gate drive applications.

While maintaining the fundamental performance of Toshiba's existing photovoltaic couplers (TLP190B and TLP191B), the TLP3905 and TLP3906 expand application possibilities by increasing the maximum operating temperature to 125°C (max) and increasing the isolation voltage by 50 percent to 3750Vrms (min).

The TLP3906 integrates a control circuit for releasing the MOSFET gate charge, providing a turn-off speed of 0.3ms - approximately one third of TLP3905. TLP3906 also offers a minimum LED trigger current IFT (max) of 3mA to provide low power dissipation of LED current.


  • Open voltage: 7 V (min)
  • Short current: 12 μA (min)
  • Isolation voltage: 3750 Vrms (min)
  • Safety standards: UL (approved), cUL (approved)

Pricing and Availability

Toshiba's new photovoltaic couplers are available now. Budgetary pricing is $0.78 for the TLP3905 in sample size volume and $0.82 for the TLP3906 in sample size volume. Please contact your local Toshiba Sales Office for samples.

*About Toshiba Corp. and TAEC

About TAEC

Through proven commitment, lasting relationships and advanced, reliable electronic components, Toshiba enables its customers to create market-leading designs. Toshiba is the heartbeat within product breakthroughs from OEMs, ODMs, CMs, VARs, distributors and fabless chip companies worldwide. A committed electronic components leader, Toshiba designs and manufactures high-quality flash memory-based storage solutions, solid state drives (SSDs), hard disk drives (HDDs), solid state hybrid drives (SSHDs), discrete devices, custom SoCs/ASICs, imaging products, microcontrollers, wireless components, mobile peripheral devices, advanced materials and medical tubes that make possible today's leading smartphones, tablets, cameras, medical devices, automotive electronics, industrial applications, enterprise solutions and more.

Toshiba America Electronic Components, Inc. is an independent operating company owned by Toshiba America, Inc., a subsidiary of Toshiba Corporation, Japan's largest semiconductor manufacturer and the world's sixth largest semiconductor manufacturer (Gartner, 2013 Worldwide Semiconductor Revenue, December 2013). Founded in Tokyo in 1875, Toshiba is at the heart of a global network of over 590 consolidated companies employing over 200,000 people worldwide. Visit Toshiba's web site at

For additional company and product information, please visit

© 2014 Toshiba America Electronic Components, Inc. All rights reserved.

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.

Editor's Note:  Images available for download from:


SOURCE Toshiba America Electronic Components, Inc.

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