Overview Product Description BD677-A_Fairchild.pdf Complementary to PNP-Darlington BD678. Product Videos Custom Field Product Reviews Write a Review Write a Review × BD677-A ; Transistor NPN-Darlington 60V 4A 40W MHz, TO-126 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *