GR >> SG1577DY 
194415
SG1577DY
Fairchild/ON Semiconductor
Quantity 18650
Packaging IC REG CTRLR BUCK/BOOST 20DIP
Description original&Quality new original
205779
SG1577DY
Fairchild Semiconductor
Quantity 20000
Packaging IC REG CTRLR BUCK BST PWM 20-DIP
Description original&Quality new original