Plastic Packages for Integrated Circuits Package Outline Drawing L20.3.2x1.8 20 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE (UTQFN) Rev 0, 5/08 1.80 A 6 PIN #1 ID 16X 0.40 B 20 6 PIN 1 ID# 1 19 2 3.20 0.50±0.10 (4X) 0.10 9 12 11 10 VIEW “A-A” TOP VIEW 0.10 M C A B 0.05 M C 4 20X 0.20 19X 0.40 ± 0.10 BOTTOM VIEW ( 1.0 ) (1 x 0.70) SEE DETAIL "X" 0.10 C MAX 0.55 C BASE PLANE ( 2. 30 ) SEATING PLANE 0.05 C SIDE VIEW ( 16 X 0 . 40 ) C 0 . 2 REF 5 ( 20X 0 . 20 ) 0 . 00 MIN. 0 . 05 MAX. ( 19X 0 . 60 ) DETAIL "X" TYPICAL RECOMMENDED LAND PATTERN 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 identifier may be either a mold or mark feature. 1