0.5 mm Pitch BGA Routing Solution
There is a reasonable solution for via fanout and a routing solution for the 0.5 mm pitch BGA but we need to think outside the box. The board thickness is an important factor because it affects the hole plating aspect ratio. If you use a 1 mm PCB thickness and want to achieve a 7:1 aspect ratio (this is common among all manufacturers) then the smallest hole size … Read More
Tags: CAD Library, BGA
The BGA or Ball Grid Array has been around since the 1980’s but the pin pitch started out with 1.5 mm and then quickly went to 1.27 mm (50 mils) for about 15 years. Then in the late 1990’s, the 1 mm pitch BGA was introduced and every couple years a smaller pin pitch was introduced. Today 0.4 mm pitch BGA’s are in every cell phone and 0.3 mm pitch BGA’s are the next generation. … Read More
Tags: CAD Library, BGA
I'm curious as how do PCB designers route metric pitch BGA's on a mil grid system or gridless (which consumes memory and CPU)? I can't figure why anyone would use a mil grid system for any PCB CAD library construction or PCB design layout when all the SMT component manufacturers are only producing metric pin pitch packages. This is where we note that all chip resistors and capacitors are dimensioned … Read More
Tags: CAD Library, BGA
Last week, I interviewed two designers at Broadcom for a customer success story. This was another very interesting project and the empirical results of their story are quite impressive.
The focus of the Broadcom story is I/O Designer. If you’re not familiar with “IOD” and you design boards incorporating FPGAs, ASICs or any large-pin-array IC, you really should take a look at our I/O Designer webpage.
The … Read More
Tags: IOD, I/O Designer, PCB Design Software, BGA, BGA Breakout, ASIC, PCB routing, FPGA, HyperLynx, PCB Software, Broadcom, Expedition Enterprise
In this post and some following ones, I want to bring up the issues and questions that customers brought up to me during the U2U meetings. This includes not only during the BGA Fanout workshop, the Expedition PCB Update presentation, but also in meetings with individual customers.
1. Display Control Scheme Naming - When the user applies a scheme to Display Control and then makes an edit and wants … Read More
Tags: Expedition PCB, Control Scheme, BGA, Fanout, GUI
Book helps you resolve BGA-layout issues
by David Marsh – EDN, 10/2/2008
As a circuit designer who also often lays out quite complex boards, I found the temptation to purchase Charles Pfeil’s new book-BGA Breakouts & Routing: Effective Design Methods for Very Large BGAs-irresistible, and I wasn’t disappointed. The approximately 160 pages and more than 100 figures within this quality paperback … Read More
Tags: Route, Expedition_PCB, BGA, HDI, Breakout, Design_Methods, BGA_Routing, Board_Fabrication
HIGHLY RECOMMENDED!
If you thought the presentation on HDI in Expedition PCB was good, this one is even better!
Effective BGA Fanout Patterns
Selecting the above link will take you to a presentation that condenses the most important aspects of my book “BGA Breakouts and Routing” into 1/2 hour. Normally this presentation takes about 2 hours live; however, I have attempted to provide you with … Read More
Tags: Route, Expedition_PCB, BGA, HDI, Breakout, Design_Methods, BGA_Routing, Board_Fabrication
Since I have been spending a lot of time researching how to effectively breakout and route large BGAs, my initial posts will be related to designing with BGAs; however, in addition to that topic, I am interested in interactive and automatic routing.
BGAs that are difficult to route are either very large (over 1500 pins) or with a very small pitch (less than .8mm). In both cases the most common reason … Read More
Tags: BGA, HDI, Route, BGA_Routing, Breakout
