Comprising one leaded 5 mm IR emitter with parabolic lens and 8 SMD devices in 0805, PLCC-2, top-looking and side-looking packages, high-speed 940 nm IR emitters employ SurfLight™ surface emitter chip technology. Emission of nearly all light and power from top of chip results in radiant intensity ratings up to 600 mW/sr (leaded) or 10–120 mW/sr (SMD). Respectively, angles of half intensity for leaded and SMD devices are ±3° and ±9° to ±60°. Rise and fall times are 10 nsec.