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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB3250 датащи(PDF) 48 Page - SMSC Corporation |
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USB3250 датащи(HTML) 48 Page - SMSC Corporation |
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48 / 48 page  Figure 9.2 USB3250 QFN Package Outline and Parameters A INITIAL RELEASE 2/07/04 S.K.ILIEV DECIMAL X.X X.XX X.XXX MATERIAL FINISH STD COMPLIANCE THIRD ANGLE PROJECTION PRINT WITH "SCALE TO FIT" DO NOT SCALE DRAWING APPROVED ANGULAR UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MILLIMETERS AND TOLERANCES ARE: DIM AND TOL PER ASME Y14.5M - 1994 DRAWN CHECKED NAME SCALE 80 ARKAY DRIVE HAUPPAUGE, NY 11788 USA DWG NUMBER TITLE DATE SHEET REV REVISION HISTORY DESCRIPTION REVISION RELEASED BY DATE S.K.ILIEV S.K.ILIEV S.K.ILIEV ±1° - - ±0.025 ±0.05 ±0.1 2/07/04 1:1 2/06/04 2/07/04 C JEDEC: MO-220 1 OF 1 56 TERMINAL QFN, 8x8mm BODY, 0.5mm PITCH PACKAGE OUTLINE MO-56-QFN-8x8 SIDE VIEW 3-D VIEWS TOP VIEW 3 2 BOTTOM VIEW NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETER. 2. POSITION TOLERANCE OF EACH TERMINAL AND EXPOSED PAD IS ± 0.05mm AT MAXIMUM MATERIAL CONDITION. DIMENSIONS "b" APPLIES TO PLATED TERMINALS AND IT IS MEASURED BETWEEN 0.15 AND 0.30 mm FROM THE TERMINAL TIP. 3. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL BUT MUST BE LOCATED WITHIN THE AREA INDICATED. E2 E E1 D D1 TERMINAL #1 IDENTIFIER AREA (D1/2 X E1/2) 56X b 56X L TERMINAL #1 IDENTIFIER AREA (D/2 X E/2) D2 e EXPOSED PAD 3 A1 A2 A 4X 45°X0.6 MAX (OPTIONAL) 2 D2 / E2 VARIATIONS CATALOG PART B REMOVE "PRELIMINARY" NOTE 10/7/04 S.K.ILIEV C L(MAX) FROM 0.55 TO 0.50. ADDED D2/E2 VARIATIONS TABLE 7/2/05 S.K.ILIEV |
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