This part is a kind of semiconductor called MD-2310-2317.
Function of this product has Single Digit 7-Segment Numeric Display.
Manufacturers : MIKWANG
Image and pinout :

Some of the text within the PDF file :
CUSTOMER : NO. EDIT DATE : MKM: : SPECIFICATION FOR APPROVAL PRODUCT : 2.3" Single Digit 7-Segment Numeric Display MODEL NO. MD-2310/2317 APPROVAL CHK CHK APPD. REVISION REMARKS MIKWANG ELECTRONICS CO., LTD. RM1401, 60-24,GASAN-DONG, GEUMCHEON-GU, SEOUL, KOREA TEL : 82-2-2113-7700(Rep.) FAX : 82-2-2113-7707 URL : WWW.LED.CO.KR / E-MAIL : mkled7700@hanmail.net MIKWANG ELECTRONICS CO., LTD. 8 8 5 5 MIKWANG ELECTRONICS CO., LTD. ◆ Ultra Red MD-UR2310/2310(AlGaAs/GaAs) Electrical/Optical Characteristics(Ta=25℃) mW mW mA mA V ℃ ℃ Parameter Forward voltage/seg Reverse current/seg Luminous intensity/digit Peak wave length Spectral line half width Symbol Condition Min Typ Max Unit Vf Ir Iv λp If=10mA Vr=15V 5.4 6 10 V μA μcd nm nm 880 120 20 60 15 -25~+85 -55~+100 Ab [ ... ]
MD-2310-2317 PDF Datasheet Download
