This part is a kind of semiconductor called NTE3052.

Function of this product has 0.3 Single Digit Numeric Display / Seven Segment / Common Anode.

Manufacturers : NTE

Image and pinout :

Some of the text within the PDF file :

NTE3052 thru NTE3055 0.3” Single Digit Numeric Display, Seven Segment, Common Anode Description: The NTE3052 through NTE3055 are 0.3 inch (7.62mm) height single digit, seven segment, common anode displays. The NTE3052 utilizes LED chips which are made from GaAsP on a GaAs substrate. The NTE3054 utilizes LED chips which are made from GaP on a transparent GaP substrate. The NTE3053 and NTE3055 utilize LED chips which are made from GaAsP on a transparent GaP substrate. Features: D 0.3 Inch (7.62mm) Digit Height D Choice of Four Bright Colors: Red – NTE3052 Orange – NTE3053 Green – NTE3054 Yellow – NTE3055 D D D D D Low Power Requirement Excellent Characters Appearance Categorized for Luminous Intensity IC Compatible Easy Mounting on PC Board or Sockets Absolute Maximum Ratings: ( [ ... ]

NTE3052 PDF Datasheet Download