Toshiba launched a 4-channel transistor coupler that is conducive to high-density installation of medium and low speed insulated communication interfaces

     Toshiba Electronic Components and Storage Devices Co., Ltd. has introduced 4-channel transistor output optocoupler (hereinafter referred to as "transistor coupler") "TLP294-4" and "TLP295-4", which standardized the input threshold voltage of LED and adopted SO16 packaging.

     TLP294-4 is AC input type and TLP295-4 is DC input type. Compared with Toshiba's current transistor coupler, these two products integrate a discharge resistor for storing charges at the transistor base, so the propagation delay time is shorter. The existing transistor coupler has been used for applications with communication speeds up to about 10 kbps, while the new product supports 10 kbps to 20 kbps, so it is suitable for FA devices such as programmable logic controllers and inverters, as well as insulated communication interface applications. These 4-channel products can be installed in high density.

     In terms of insulation performance, the minimum creepage distance of such products is 5mm, the minimum isolation voltage is 3.75kVrms, and they have passed the certification of UL1577, EN 60747-5-5 and other international safety standards. Therefore, they are also suitable for applications with high insulation requirements.