For the electronics hobbyists, repair techs, and amp builders out there – here's a pack of 10 MJ15024 silicon power transistors. These are classic, high-power NPN transistors in the sturdy TO-3 metal package (the big round can with two pins and the mounting tab). They're rated for 16 amps and high voltage, making them perfect for audio amplifier output stages, power supplies, motor controllers, and other high-current applications. Brand is Motorola, which is the original maker of these legendary parts. Brand new and unused. If you're restoring an old hi-fi amp, building a linear power supply, or just need reliable, robust transistors for a project, having a few spares of these is always smart. They're known for being tough and sounding good in audio circuits. Just make sure your design calls for exactly this part number. A great value when you buy them in a 10-pack like this.