TOSHIBA PHOTOCOUPLER IRED & PHOTO-IC TLP2118E TLP2118E PDP (Plasma Display Panel) FA (Factory Automation) Interfaces of measuring and control instruments Unit: mm The Toshiba TLP2118E provides superior cost performance. The TLP2118E consists of an infrared emitting diodes and integrated high-gain, high-speed photodetectors. Since the TLP2118E contains two photocouplers in the SO8 package, it saves board space. The photodetector has an internal Faraday shield that provides a guaranteed common.