The 61010 is an N-P-N Planar Silicon Photodarlington Transistor in a package designed to be mounted in a single-clad printed circuit board. Its large effective aperture and narrow angular response make this a highly sensitive device with minimum response to off-axis or stray light. This sensor is also available with a lead attached to the case so that it may be connected without the use of a printed circuit board. Available in custom binned to customer specifications and/or screened to MIL-PRF-19500.