Screaming Circuits: Parts Form-factors

PROTOTYPE AND SMALL VOLUME
PCB ASSEMBLY MADE EASY

QFN Center Pad revisited

The QFN (quad flat pack, no leads) package can no longer be considered exotic. It was when I first wrote about it a decade ago, but not any more. In fact, with the wafer scale BGA, it's one of the... Read more

Never Take Pin Numbering For Granted

Our all-things-about-electronics manufacturing standards body, the IPC, specifies the proper numbering order for most components. That's a pretty nice thing that they do there, but it's not always enough to prevent layout mishaps. Case in point a line of small... Read more

Components So Fragile, They Break Before Arrival

There are a lot of components that require special handling. Some days, "special" requirements seem more the norm than the exception. But, every now and then, we see something that puts even those special components to shame. Not long ago,... Read more

Surface mount power component footprints

There was a time when the Bison ran free on the plains and power components were easy to design with. Everything, with the exception of an exotic few, used either the TO-220 or TO-3 packages. Even when surface mount came... Read more

Suspect Thru-hole Packaging

Surface mount components are carefully packaged up in strips, tubes, or trays, because they're machine assembled. The assembly robots need order and organization to properly do their job. Thu-hole parts, on the other hand, are almost always manually inserted by... Read more

How Much of that part number is important?

Part numbers are incredibly important, but can also be incredibly annoying and confusing. Obviously, we all need them, but it would be nice if there were some semblance of a standard. Well, there are some standards, like capacitor grades and... Read more

The Common Parts Library

The two most common causes of delay in small volume manufacturing here at Screaming Circuits (and presumably, others like us) are component availability, and footprint mismatches. We don't substitute parts without your approval for a number of reasons. I've written... Read more

New Super Small BLE Chip

I tend to get quite excitable when new, smaller, components come along. The smaller, the better. While, I haven't yet seen it up close and personal, I've seen the announcement and datasheet for a new SoC (System on Chip), with... Read more

Continuous Strips of Parts

Not long ago (No Need To Waste Parts), I wrote about the use of tiny cut strips here at Screaming Circuits. That's good information, but only part of the story. (When has anything ever been the whole story???). There may... Read more

No need to waste parts

We love parts on reels. Who doesn't? But reels aren't always practical - and it's not just about cost. Cost is, of course, important, but there may be other factors to consider. Say, for example, you need 20 2.2K Ohm,... Read more