Toshiba Launches 100V High-Current Photorelay for Industrial Equipment

February 05, 2021 15:30

TOKYO--(Business Wire / Korea Newswire) February 05, 2021 -- Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has launched “TLP241B,” a high-current photorelay in a DIP4 package for industrial equipment such as programmable logic controllers and I/O interfaces. Samples and production quantities are available now.

TLP241B has integrated MOSFET based on Toshiba’s latest generation of U-MOS process. With TLP241B, the OFF-state output terminal voltage is extended to 100V, a 150% improvement from the 40V of the current TLP241A. It is housed in a versatile DIP4 package, and is the industry’s first[1] DIP4 packaged product to deliver 100V OFF-state output terminal voltage, 2A ON-state current and 5kV isolation voltage. This rating expansion covers a variety of applications.

TLP241B can replace a 1-Form-A contact mechanical relay. Unlike mechanical relays, TLP241B has no moving contacts to degrade. Its low current drive feature also improves product life. Other benefits are fast response time and PCB space saving due to smaller package size.

Since the maximum operating temperature rating is 110℃, temperature design margins of equipment are easier to obtain.


- Industrial equipment (Programmable logic controllers, I/O interface and various sensor control, etc.)
- Building automation systems (Heating, Ventilation and Air Conditioning(HVAC) and thermostats, etc.)
- Replacement of mechanical relays (AC 24 to 48V system, DC 24 to 100V system)


- High ON-state current rating : ION=2A, IONP=6A (Pulsed)
- OFF-state output terminal voltage rating : VOFF=100V
- High operating temperature rating : Topr max=110℃
- General-purpose DIP4 package with gull wing option (SMT) available

Main Specifications (To view the table, please visit

[1] Among DIP4 packaged photorelays, as of February 4, 2021, Toshiba survey.

Follow the link below for more.

Follow the link below for more on Toshiba’s optical devices lineup.
Photorelays (MOSFET Output)

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

Customer Inquiries:
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-3-3457-3431

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

*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 becoming an independent company in July 2017, the company has taken its place among the leading general devices companies, and offers its customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Its 24,000 employees around the world share a determination to maximize the value of its products, and emphasize close collaboration with customers to promote co-creation of value and new markets. The company looks forward to building on annual sales now surpassing 750-billion yen (US$6.8 billion) and to contributing to a better future for people everywhere.
Find out more about Toshiba Electronic Devices & Storage Corporation at

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Toshiba Electronic Devices & Storage Corporation
Digital Marketing Department
Chiaki Nagasawa

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