2SD870 original NEW HOT high output transistor. Used on monitor chassis such as G07 X01, Sanyo 20EZV Q902, Red Tent, and other 19″ chassis. Atari Disco monitor at Q902. The 2SD870 is a higher rated replacement for the 2SD869 and the 2SD898B. The 2SD871 is a higher rated replacement and will substitute for the 2SD870 so use the 2SD871 if this is out of stock.