GR >> SG1577SZ 
194416
SG1577SZ
Fairchild/ON Semiconductor
Quantity 18650
Packaging IC REG CTRLR BUCK/BOOST 20-SOP
Description original&Quality new original
205729
SG1577SZ
Fairchild Semiconductor
Quantity 20000
Packaging IC REG CTRLR BUCK BST PWM 20-SOP
Description original&Quality new original