Package Outline Dimensions TO220AC (Type A4) A E Q A1 P H1a D1 O L2 0 1.5 L1 A2 b2 L b e1 c e TO220AC (Type A4) Dim Min Max Typ A 4.470 4.670 A1 1.170 1.370 A2 2.520 2.820 b 0.710 0.910 0.813 b2 1.170 1.370 1.270 c 0.279 0.483 D1 8.763 9.017 8.890 E 10.010 10.310 e 2.54BSC e1 4.980 5.180 H1a 12.294 12.548 12.446 L 13.700 14.100 L1 4.04 4.19 4.11 L2 1.60 Q 2.642 2.946 2.743 ØP 3.790 3.890 All Dimensions in mm ALL DIMENSIONS ARE NOMINAL VALUES SHOWN IN MILLIMETERS Note: The suggested land pattern dimensions have been provided for reference only, as actual pad layouts may vary depending on application. These numbers may be modified based on user equipment capability or fabrication criteria. A more robust pattern may be desired for wave soldering and is calculated by adding 0.2 mm to the ‘Z’ dimension. For further information, please reference document IPC-7351A, Naming Convention for Standard SMT Land Patterns, and for International grid details, please see document IEC, Publication 97. 2015-06-05 1 of 1 www.diodes.com Package Outline Dimensions Suggested Pad Layout © Diodes Incorporated