Found 4 alternatives for 2N6661 by Microchip Technology. Transistors Fets Mosfets Single — TO-205AD, TO-39-3 Metal Can.
MOSFET N-CH 60V 410MA TO39
MOSFET N-CH 60V 1.1A TO39
MOSFET N-CH 100V 1.7A TO39
MOSFET P-CH 60V 750MA TO39