Motorola BR150CT Silicon NPN Power Transistor (NOS)

BR150CT transistor.

• ​Part Number: BR150CT
• ​Type: Silicon NPN Power Transistor
• ​Markings:
  • ​"BR150CT": The part number.
  • ​"W": This may indicate the manufacturer (like Western Electric or a similar brand).
  • ​"8413": A date code, indicating the 13th week of 1984.
  • ​"6AH" and "410": Factory or lot codes.

​The BR150CT is a less common part number compared to the MJ series, but it is a similar high-power transistor, often used in older audio amplifiers, power supplies, and inverters. The two pins on the bottom view are the emitter and the base, and the metal case itself is the collector.