Toshiba introduces three smallest voltage-driven Photorelay

Toshiba Electronic Devices & Storage Corporation (Toshiba), the Japanese multinational conglomerate has reportedly announced the arrival of three photorelays named TLP3407SRA, TLP3475SRHA, and TLP3412SRHA. These photorelays are the smallest voltage-driven photorelays in the industry and carry the potential to extend the operating temperature of 125 degrees celsius. 

Previously, Toshiba's photorelays operated at around 110 degrees Celsius. This rise in the operating temperature from 110 to 125 will assist companies to mount the novel photorelays in areas that require high temperatures. Additionally, it will also allow the easy design of equipment for desired temperature margins. 

Sources cite that its package, S-VSON4T, has the smallest mounting area of 2.9mm². It also features low input power consumption drive: 3.3mW [2] (max) @VIN=3.3V (TLP3407SRA). This will either minimize PCB sizes or maximize the number of photo-related configurations in applications such as semi-conductor measuring systems, probe cards, and other appliances.

As far as the application aspects are concerned, the newly launched photorelays will be used in semiconductor testers including memory, SoC, LSI, etc. It will also be useful for probe cards and measuring equipment such as oscilloscope, data logger, amongst many others. 

For the record, Toshiba is one of the leading developers of photorelays in the world. Ten days earlier, the firms launched two photorelays named TLP170AM and TLP170GM in a small 4-pin SO6 package. 

These were built for security systems, building automation, and other industrial equipment. These devices have a peak LED trigger current of 1mA, minimizing the power loss on the side of the input by expanding the photodiode sensitivity. The usage of these ON / OFF photorelays in battery-operated protection devices and diverse sensors results in reduced power consumption and longer system activity.

With pulse operation up to 2.1A, the TLP170AM has a reported OFF-status terminal voltage of 60V and a constant ON-status current (ION) of 0.7A. The TLP170GM is 350V with a steady current and pulse ION of 110mA and 330mA.

Their application includes security systems, passive sensors (PIR[1]), etc. Industrial equipment, various sensor controls I/O interfaces, building automation systems, programmable logic controllers, and replacement of mechanical relays.

Source Credit -https://www.businesswire.com/news/home/20200826005815/en/