The 61053 is an N-P-N Planar Silicon phototransistor in a package designed to be mounted in a double-clad printed circuit board. It is available in a range of sensitivities and is lensed for minimum response to stray light. High sensitivity, low dark current leakage, and low saturation voltage make this device ideal for interfacing with TTL circuits. This sensor is also available with a lead attached to the case so that it may be connected without the use of printed circuit boards. Available custom binned to customer specifications or screened to MIL-PRF-19500.