Current Issue

Mike Buetow

Rapid prototyping and first-article inspection are technologies that have been around for years, but should gain significant momentum in the coming months as companies look to cut the cost of new products. It can't happen soon enough: Years ago then-Flextronics CTO Nic Braithwaite told me he calculated a large, multi-board server program could conceivably cost $50 million to ramp, once all the ECOs and respins were accounted for.

Read more: Half Staff

PCB design software development wasn’t always dominated by a trio of giants. Even not-so-old timers will remember the landscape once overflowed with small, entrepreneurial businesses. Pads, Cooper & Chyan, Redac, CADI, CADAM, OrCAD, Symbionics, ACT, Ambit and countless others were the foundation for what has emerged as Mentor Graphics, Cadence and Zuken.

Read more: The Rise of the Small?

Bob Willis

A look at solder mask contamination on pads.

This month we look at solder mask contamination on pads. FIGURE 1 is a very, very bad example that never should have made it to the customer. Solder mask residues are visible on the surface and around the edge of the pad. There is also a level of solder mask undercutting.

 

 

 

 

Read more: Avoid Green Solderable Finishes

Bob Willis

Get agreement on what constitutes “rework” – and a capable operator.

This month we look at etching defects and their removal – or presence, as in the case of FIGURE 1. A customer was surprised to find a batch of bare boards with this level of rework.

 

 

 

 

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Read more: Poor Fabrication and Rework

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