2N6989, 2N6989U, 2N6990 Multiple (Quad) NPN Silico.
2N6989U - MULTIPLE (QUAD) NPN SILICON DUAL IN-LINE AND FLATPACK SWITCHING TRANSISTOR
2N6989U - Surface Mount Quad NPN Transistor
2N6989U - Multiple (Quad) NPN Silicon Dual In-Line And Flatpack Switching Transistor