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CSPESD304G Datasheet(PDF) 5 Page - California Micro Devices Corp |
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CSPESD304G Datasheet(HTML) 5 Page - California Micro Devices Corp |
5 / 6 page © 2003 California Micro Devices Corp. All rights reserved. 10/10/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 5 CSPESD304 Application Information Refer to Application Note AP-217, "The Chip Scale Package", for a detailed description of Chip Scale Packages offered by California Micro Devices. Figure 3. Recommended Non-Solder Mask Defined Pad Illustration Figure 4. Eutectic (SnPb) Solder Ball Reflow Profile Figure 5. Lead-free (SnAgCu) Solder Ball Reflow Profile PRINTED CIRCUIT BOARD RECOMMENDATIONS PARAMETER VALUE Pad Size on PCB 0.275mm Pad Shape Round Pad Definition Non-Solder Mask defined pads Solder Mask Opening 0.325mm Round Solder Stencil Thickness 0.125 - 0.150mm Solder Stencil Aperture Opening (laser cut, 5% tapered walls) 0.330mm Round Solder Flux Ratio 50/50 by volume Solder Paste Type No Clean Pad Protective Finish OSP (Entek Cu Plus 106A) Tolerance — Edge To Corner Ball +50 µm Solder Ball Side Coplanarity +20 µm Maximum Dwell Time Above Liquidous 60 seconds Soldering Maximum Temperature 260°C Solder Mask Opening 0.325mm DIA. Non-Solder Mask Defined Pad 0.275mm DIA. Solder Stencil Opening 0.330mm DIA. 200 250 150 100 50 0 1:00.0 2:00.0 3:00.0 4:00.0 Time (minutes) |
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