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USB82642 датащи(PDF) 53 Page - Microchip Technology |
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USB82642 датащи(HTML) 53 Page - Microchip Technology |
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53 / 64 page ![]() 2012-2021 Microchip Technology Inc. DS60001253F-page 53 USB82642 FIGURE 10-3: USB82642AM/AMR 48-PIN VQFN LAND PATTERN RECOMMENDED LAND PATTERN For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging Note: Dimension Limits Units C2 Optional Center Pad Width Contact Pad Spacing Optional Center Pad Length Contact Pitch Y2 X2 See Center MILLIMETERS 0.50 BSC MIN E MAX 6.90 Contact Pad Length (X48) Contact Pad Width (X48) Y1 X1 0.85 0.30 Microchip Technology Drawing C04-2223B NOM SILK SCREEN 1 2 48 C1 C2 E X1 Y1 G1 Y2 X2 C1 Contact Pad Spacing 6.90 Contact Pad to Center Pad (X48) G1 0.20 Thermal Via Diameter V Thermal Via Pitch EV 0.33 1.20 ØV EV EV 48-Lead Plastic Quad Flat, No Lead Package (RS) - 7x7 mm Body [VQFN] With Exposed Pad; Punch Singulated BSC: Basic Dimension. Theoretically exact value shown without tolerances. Notes: Dimensioning and tolerancing per ASME Y14.5M For best soldering results, thermal vias, if used, should be filled or tented to avoid solder loss during reflow process 1. 2. Pad Variations 5.60 C 5.40 5.20 4.20 G H K X2 5.60 5.40 5.20 4.20 Y2 Symbol Center Pad Variations MIN NOM MAX MIN NOM MAX Variant |
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