Marking on the case: BK. Number of terminals: 6. RoHS: yes. Assembly/installation: surface-mounted component (SMD). Housing: SOT-26. Housing (according to data sheet): SOT26. Operating temperature: -40...+85°C. VCC: 2.7...5.5V. Protection: 15kV ESD Protection per IEC 61000-4-2 (with external capacitance). Spec info: adjustable current limit with precise precision, 75mA...2360mA