Plastic Packages for Integrated Circuits Package Outline Drawing L20.4x4B 20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 1, 11/06 4X 4.00 2.0 16X 0.50 A B 16 6 PIN #1 INDEX AREA 20 6 PIN 1 INDEX AREA 1 4.00 15 2 .70 REF 11 (4X) 5 0.15 6 10 0.10 M C A B 4 20X 0.25 ± 0.02 20X 0.4 ± 0.05 TOP VIEW BOTTOM VIEW SEE DETAIL "X" 0.10 C 0 . 90 ± 0 . 1 C BASE PLANE ( 3. 8 TYP ) ( SEATING PLANE 0.08 C 2. 70 ) ( 20X 0 . 5 ) SIDE VIEW ( 20X 0 . 25 ) C 0 . 2 REF 5 0 . 00 MIN. 0 . 05 MAX. ( 20X 0 . 6) TYPICAL RECOMMENDED LAND PATTERN DETAIL "X" NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 indentifier may be either a mold or mark feature. 1