Hello. Welcome to Futurlec. The electronic components Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. MOSFET TRANSISTORS - BU SERIES BU Series BUZ Series of Mosfet transistors for amplifier applications. Includes the BUZ60 and BUZ80. Quantity discounts are available for 25 or more parts, click on the price link for more information. MOSFET TRANSISTORS - IRF SERIES IRF Series IRF and IRFP Series of Mosfet transistors for amplifier applications. Includes the IRF540 and IRFP350. Quantity discounts are available for 25 or more parts, click on the price link for more information. MOSFET TRANSISTORS - J SERIES J Series J Series of Mosfet transistors for small switching applications. Includes the J111 and J112. Quantity discounts are available for 25 or more parts, click on the price link for more information.