Package Information SAW Type 48-pin (6mm×6mm) QFN Outline Dimensions Symbol Dimensions in inch Min. Nom. Max. A 0.028 0.030 0.031 A1 0.000 0.001 0.002 A3 — 0.008 BSC — b 0.006 0.008 0.010 D — 0.236 BSC — E — 0.236 BSC — e — 0.016 BSC — D2 0.173 0.177 0.181 E2 0.173 0.177 0.181 L 0.014 0.016 0.018 K 0.008 — — Symbol Dimensions in mm Min. Nom. Max. A 0.700 0.750 0.800 A1 0.000 0.020 0.050 A3 — 0.203 BSC — b 0.150 0.200 0.250 D — 6.000 BSC — E — 6.000 BSC — e — 0.40 BSC — D2 4.40 4.50 4.60 E2 4.40 4.50 4.60 L 0.35 0.40 0.45 K 0.20 — — http://www.holtek.com.tw/pdf/guide.pdf June 03, 2014