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Toshiba Electronic Devices & Storage Corporation Releases Medium Voltage, High Capacity Photorelay in Small Package

Latest trench MOSFET process delivers replacement for mechanical relays

 November 14, 2017

Toshiba Electronic Devices & Storage Corporation


TOKYO—Toshiba Electronic Devices & Storage Corporation today announced the launch of “TLP3145,” a new photorelay in a small 2.54SOP4 package with an off-state output terminal voltage of 200V and an on-state current of 0.4A. Volume shipments start today.

Fabricated using the latest U-MOS VIII trench MOSFET process, the new IC combines an off-state output terminal voltage of 200V with a controllable on-state current of up to 0.4A. This makes TLP3145 a suitable replacement for a 1A mechanical relay in control of a 100V AC circuit. Replacing a mechanical relay with a photorelay that is smaller and does not need a relay driver increases system reliability and supports space-saving design. In another plus, the TLP3145 is rated for an operating temperature of 110ºC (max), making it easier to allow for a temperature margin in system-level thermal design.

The latest Gartner market report recognizes Toshiba as the leading manufacturer of optocouplers by sales in 2015 and 2016, with 23% of sale-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)
  • Building Automation System
  • Semiconductor Tester


  • SOP small package: 2.54SOP4  2.54mm(pitch),2.1mm(High)
  • Normally open(1-Form-A/1a)
  • OFF-state output terminal voltage:200V(Max)
  • ON-state current 0.4A(DC)、1.2A(Pulse)  
  • Operating temperature:110℃(Max)
  • Safety standards:UL(UL1577)、Isolation voltage 1500Vrms(min)


Part number Absolute maximum ratings   Trigger LED current
ON-state resistance
ON-state resistance
Output capacitance COFF
OFF-state current
Time tON
Time tOFF
OFF-state output terminal voltage
ON-state current
Operating temperature
DC Pulse Max @VOFF
TLP3145 200 0.4 1.2 -40 to 110 3.0 1.0 2.0 100 1 200 0.5 0.5
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.