Toshiba’s New Photorelays Contribute to Equipment Downsizing by Reducing Mounting Density

August 27, 2020

New photorelays in S-VSON4T package with industry's smallest mounting area and maximum operating temperature of 125°C

TLP3407SRA, TLP3475SRHA  and TLP3412SRHA

TOKYO— Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has launched three photorelays: “TLP3407SRA,” “TLP3475SRHA” and “TLP3412SRHA,” that are the industry-smallest[1] voltage driven photorelays with an extended operating temperature rating of 125°C.

Raising the maximum operating temperature rating from 110°C to 125°C allows the photorelays to be mounted in high temperature areas, and makes it easier to secure required temperature design margins for equipment. The S-VSON4T package has the industry-smallest[1] mounting area of 2.9mm² .This will contribute to reducing PCB size or to increasing the number of photorelays in an existing layout in applications such as semiconductor testers, probe cards and other devices.


  • Semiconductor testers (memory, SoC and LSI, etc.)
  • Probe cards
  • Burn-in equipment
  • Measuring instruments (oscilloscope, data logger, etc.)


  • S-VSON4T, the industry’s first[1] packaging with a minimal mounting area and maximum operating temperature of 125°C: Mounting area 2.9mm2 (typ.)
  • Low input power consumption drive: 3.3mW[2] (max) @VIN=3.3V(TLP3407SRA)


For more information on the new products visit:




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


For information on Toshiba’s full line of solid state relays 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] For photorelays where maximum operating temperature rating is 125°C, according to a survey by Toshiba (as of August 25, 2020).
[2] Applied input forward voltage × maximum limited LED current=3.3V×1mA

* Company names, product names, and service names may be trademarks of their respective companies.

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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