Artifact Details Title 4-layer diode type D Catalog Number 102747141 Type Physical object Manufacturer Shockley Semiconductor Laboratory Identifying Numbers Other number JC677 Etched on top of ca Dimensions overall: 1/4 in x 1/4 in x 1 3/8 in Category Component/diode Credit Gift of Arnold and Mabel Beckman Foundation Lot Number X6046.2011