QFN44 MLF44 WLCSP44 Burn in Socket Pin Pitch 0.4mm IC Body Size 6*6mm OPEN TOP Flash Test Socket Adapter QFN44 burn-in socket freeshipping htqfp qfn48 to 0 5 mm dip48 qfn44 qfp48 qfp44 pqfp lqfp adapter plate