This part is a kind of semiconductor called MOC3010.

Function of this product has (MOC3009X - MOC3012X) OPTICALLY COUPLED BILATERAL SWITCH NON-ZERO CROSSING TRIAC.

Manufacturers : ISOCOM COMPONENTS

Image and pinout :

Some of the text within the PDF file :

MOC3009X, MOC3010X, MOC3011X, MOC3012X MOC3009, MOC3010, MOC3011, MOC3012 OPTICALLY COUPLED BILATERAL SWITCH NON-ZERO CROSSING TRIAC APPROVALS l UL recognised, File No. E91231 'X' SPECIFICATION APPROVALS l 2.54 7.0 6.0 1.2 7.62 6.62 1 2 3 Dimensions in mm 6 5 4 7.62 4.0 3.0 0.5 13° Max 0.26 VDE 0884 in 3 available lead form : - STD - G form - SMD approved to CECC 00802 DESCRIPTION The MOC3009,301_ series are optically coupled isolators consisting of a Gallium Arsenide infrared emitting diode coupled with a light activated silicon bilateral switch performing the functions of a triac mounted in a standard 6 pin dual-in-line package. FEATURE l Options :10mm lead spread - add G after part no. Surface mount - add SM after part no. Tape&reel - add SMT&R after part no. [ ... ]

MOC3010 PDF Datasheet Download