The 2SB1230 with TO-3PN Pre-ordered transistors ROHS manufactured by SPTECH is a pre-ordered pair of complementary NPN T-03PN transistors. The transistors are usually found in power supplies, amplifier circuits, rectifiers, and other applications which require high power, high speed, and low power dissipation. These transistors are ROHS compliant, meaning they are free of hazardous substances and materials. The product is made of aluminum oxide and is designed to provide an economical solution for power applications. The PN junction is coated with a special material to make it heat-resistant, and each package comes with a detailed data sheet. The 2SB1230 transistors are also available in various packages, such as TO-3, TO-5, and DIP.