intersil的L12.4X4B - 12导双平面线塑料封装信息（LDFN L12.4X4B — 12 Lead Dual Flat No-Lead Plastic Package Plastic Packages for Integrated Circuits Package Outline Drawing L12.4x4B 12 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 06/08 3.20 4.00 A 2X 2.50 6 10X 0.50 PIN 1 PIN #1 INDEX AREA INDEX AREA B 6 1 6 ……