https://www.xtals.co.uk/product-page/transistor-bc547b-npn-general-purpose-to-92
Transistor -BC547B NPN General Purpose TO-92 | Xtals.co.uk
general purposetransistornpncouk
https://www.activeelectronicsshop.com.au/product-page/bc547b-transistor-1
BC547B Transistor | Active Electronics
Bipolar Transistors - BJT NPN 45V 100mA
transistoractiveelectronics