इसी प्रकार के2SD1840

• 2SD1012
  • "NPN epitaxial planar silicon transistor, low-voltage larg-current amp application"
• 2SD1012
  • NPN epitaxial planar silicon transistor, low-voltage larg-current amp application
• 2SD1046
  • NPN planar silicon transistor, for LF power amp, 50W output, large power switching
• 2SD1047
  • NPN triple diffused planar silicon transistor, 140V/12A, AF 60W output application
• 2SD1048
  • NPN epitaxial planar silicon transistor, for general-purpose AF application
• 2SD1060
  • NPN planar silicon transistor, 50V/5A, switching application
• 2SD1061
  • NPN epitaxial planar silicon transistor, 50V/7A, switching application
• 2SD1062
  • NPN epitaxial planar silicon transistor, 50V/12A, switching application