Housed in SO16 package with operating temperature of -55 to +125°C, 4-channel TLP292-4 and TLP293-4 offer isolation voltage of 3,750 Vrms for high-density surface mount applications. Both are comprised of phototransistors optically coupled to InGaAs infrared emitting diodes. TLP292-4 is connected in inverse parallel configuration, and can operate directly by AC input current. With collector-emitter voltage of 80 V, devices support low input current while maintaining high current transfer ratio.