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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8941 датащи(PDF) 94 Page - Wolfson Microelectronics plc |
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WM8941 датащи(HTML) 94 Page - Wolfson Microelectronics plc |
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94 / 96 page  WM8941 Pre Production w PP, Rev 3.3, December 2007 94 PACKAGE DIAGRAM DM042.B FL: 28 PIN QFN PLASTIC PACKAGE 4 X 4 X 0.75 mm BODY, 0.45 mm LEAD PITCH INDEX AREA (D/2 X E/2) TOP VIEW D E 4 NOTES: 1. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.15 mm AND 0.30 mm FROM TERMINAL TIP. 2. FALLS WITHIN JEDEC, MO-220. 3. ALL DIMENSIONS ARE IN MILLIMETRES. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JEDEC 95-1 SPP-002. 5. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 6. REFER TO APPLICATIONS NOTE WAN_0118 FOR FURTHER INFORMATION REGARDING PCB FOOTPRINTS AND QFN PACKAGE SOLDERING. 7. DEPENDING ON THE METHOD OF LEAD TERMINATION AT THE EDGE OF THE PACKAGE, PULL BACK (L1) MAY BE PRESENT. 8. THIS DRAWING IS SUBJECT TO CHANGE WITHOUT NOTICE. Dimensions (mm) Symbols MIN NOM MAX NOTE A A1 A3 0.70 0.75 0.80 0.05 0.02 0 0.203 REF b D D2 E E2 e G 0.185 0.175 4.00 2.65 2.6 2.55 0.45 BSC 0.375 0.425 0.475 2 2 4.00 2.65 2.6 2.55 0.10 aaa bbb ccc REF: 0.15 0.10 JEDEC, MO-220 Tolerances of Form and Position 0.18 DETAIL 1 DETAIL 2 A 7 1 15 21 28 22 14 e D2 8 1 B C bbbM A BOTTOM VIEW C aaa 2 X C aaa 2 X 1 C A3 SEATING PLANE DETAIL 2 A1 C 0.08 C ccc A 5 SIDE VIEW L EXPOSED GROUND PADDLE 6 DETAIL 1 0.30mm 45 degrees EXPOSED GROUND PADDLE e Datum DETAIL 2 Terminal tip e/2 R E2 SEE DETAIL 2 A3 b Exposed lead 0.226 Ref. 3.95 4.05 3.95 4.05 G L 0.560 b |
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