Printed Circuit Design & Fab - November 2007 - (Page 37) TABLE 3. Common via pad stacks BGA PIN PITCH 1.50 mm 1.50 mm 1.27 mm 1.00 mm 1.00 mm 0.80 mm 0.75 mm ■ ■ VIA NAME VIA60-25-80 VIA55-25-75 VIA63-30-85 VIA55-25-75 VIA50-25-70 VIA45-20-65 VIA40-20-65 LAND DIAMETER 0.60 0.55 0.635 0.55 0.50 0.45 0.40 FINISHED HOLE DIA 0.25 0.25 0.30 0.25 0.25 0.20 0.20 PLANE CLEARANCE 0.80 0.75 0.85 0.75 0.70 0.65 0.65 SOLDER MASK 0.00 0.00 0.00 0.00 0.00 0.00 0.00 THERMAL ID THERMAL OD THERMAL SPOKE WIDTH 0.55 0.55 0.65 0.55 0.55 0.50 0.50 0.80 0.75 0.85 0.75 0.70 0.65 0.65 0.25 or None 0.25 or None 0.25 or None 0.25 or None 0.25 or None 0.20 or None 0.20 or None Plane clearance (anti-pad) size Plane thermal relief ID and OD size. The chart in TABLE 3 represents common via pad stack feature sizes for various pitch BGA components. The IPC-7351A LP Calculator has a BGA via calculator that allows the user to input BGA pitch and trace/ space data. It automatically calculates the optimized via for any technology, and the results are shown in Table 3. Metric trace/space sizes are in 0.025 mm (1 mil) increments. Common metric trace widths with the nearest Imperial unit in brackets (mils) are as follows: ■ 0.075 mm (3 mils) FIGURE 1. BGA using via-in-land technology. FIGURE 2. A 0.4-mm pitch BGA using microvia technology. ■ ■ ■ ■ 0.1 mm (4 mils) 0.125 mm (5 mils) 0.15 mm (6 mils) 0.2 mm (8 mils). Today, the finest pitch BGA that is commonly used in the industry today is 0.4 mm. There are plans for 0.3 mm even 0.25-mm pitch BGA components, but mainstream fabrication facilities must first find easier manufacture NOW AVAILABLE IN FOUR SIZES PROVIDING PRECISION VIDEO AND X-RAY BASED MEASUREMENT SYSTEMS TO THE PCB INDUSTRY SINCE 1978 Accuracy (To 3 microns) Speed (Up to 30 inches per second) Resolution (1/10th micron linear scales) Repeatability (Air-bearing X-Y transport) Reliability (Linear motors in X & Y axes) CLICK HERE TO DOWNLOAD DATA SHEET Flexibility (XP based metrology software) OPERATIONS TECHNOLOGY INC NOVEMBER 2007 30 Lambert Rd. PO Box 408, Blairstown, NJ 07825 USA Phone: 908-362-6200 www.optek.net PRINTED CIRCUIT DESIGN & FAB 37 http://www.optek.net/Data_Sheets/datasheet_PDF_VSA.pdf http://www.optek.net http://www.optek.net
Table of Contents Feed for the Digital Edition of Printed Circuit Design & Fab - November 2007 Printed Circuit Design & Fab - November 2007 Contents Our Line Market Watch Around the World Happenings ROI Packaging HDI Design and Fab Plating Design Tools Metric Design Productronica Product Preview Marketplace Ad Index The Signal Doctor Printed Circuit Design & Fab - November 2007 Printed Circuit Design & Fab - November 2007 - Printed Circuit Design & Fab - November 2007 (Page Cover1) Printed Circuit Design & Fab - November 2007 - Printed Circuit Design & Fab - November 2007 (Page Cover2) Printed Circuit Design & Fab - November 2007 - Printed Circuit Design & Fab - November 2007 (Page 1) Printed Circuit Design & Fab - November 2007 - Contents (Page 2) Printed Circuit Design & Fab - November 2007 - Contents (Page 3) Printed Circuit Design & Fab - November 2007 - Our Line (Page 4) Printed Circuit Design & Fab - November 2007 - Our Line (Page 5) Printed Circuit Design & Fab - November 2007 - Market Watch (Page 6) Printed Circuit Design & Fab - November 2007 - Market Watch (Page 7) Printed Circuit Design & Fab - November 2007 - Around the World (Page 8) Printed Circuit Design & Fab - November 2007 - Around the World (Page 9) Printed Circuit Design & Fab - November 2007 - Around the World (Page 10) Printed Circuit Design & Fab - November 2007 - Around the World (Page 11) Printed Circuit Design & Fab - November 2007 - Happenings (Page 12) Printed Circuit Design & Fab - November 2007 - Happenings (Page 13) Printed Circuit Design & Fab - November 2007 - ROI (Page 14) Printed Circuit Design & Fab - November 2007 - ROI (Page 15) Printed Circuit Design & Fab - November 2007 - Packaging (Page 16) Printed Circuit Design & Fab - November 2007 - Packaging (Page 16A) Printed Circuit Design & Fab - November 2007 - Packaging (Page 16B) Printed Circuit Design & Fab - November 2007 - Packaging (Page 17) Printed Circuit Design & Fab - November 2007 - Packaging (Page 18) Printed Circuit Design & Fab - November 2007 - Packaging (Page 19) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 20) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 21) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 22) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 23) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 24) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 24A) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 24B) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 24C) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 24D) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 25) Printed Circuit Design & Fab - November 2007 - HDI Design and Fab (Page 26) Printed Circuit Design & Fab - November 2007 - Plating (Page 27) Printed Circuit Design & Fab - November 2007 - Plating (Page 28) Printed Circuit Design & Fab - November 2007 - Plating (Page 29) Printed Circuit Design & Fab - November 2007 - Plating (Page 30) Printed Circuit Design & Fab - November 2007 - Plating (Page 31) Printed Circuit Design & Fab - November 2007 - Design Tools (Page 32) Printed Circuit Design & Fab - November 2007 - Design Tools (Page 33) Printed Circuit Design & Fab - November 2007 - Design Tools (Page 34) Printed Circuit Design & Fab - November 2007 - Design Tools (Page 35) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 36) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 37) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 38) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 39) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 40) Printed Circuit Design & Fab - November 2007 - Metric Design (Page 41) Printed Circuit Design & Fab - November 2007 - Productronica Product Preview (Page 42) Printed Circuit Design & Fab - November 2007 - Productronica Product Preview (Page 43) Printed Circuit Design & Fab - November 2007 - Marketplace (Page 44) Printed Circuit Design & Fab - November 2007 - Marketplace (Page 45) Printed Circuit Design & Fab - November 2007 - Marketplace (Page 46) Printed Circuit Design & Fab - November 2007 - Ad Index (Page 47) Printed Circuit Design & Fab - November 2007 - The Signal Doctor (Page 48) Printed Circuit Design & Fab - November 2007 - The Signal Doctor (Page Cover3) Printed Circuit Design & Fab - November 2007 - The Signal Doctor (Page Cover4)
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