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Screaming Circuits
Screaming Circuits company blog
Interests: Assembly, RoHS, smt, BGA, QFN, pcb, chocolate, prototype, quick-turn
Recent Activity
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As I mentioned in my prior blog, there are reasons to consider different packages than just physical size. Sometimes it is just space available on the PC board, but there may be other considerations as well. One of the first... Continue reading
Posted 13 hours ago at Screaming Circuits
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The QFN (quad flat pack, no leads) has become my favorite integrated circuit package. It's very compact, yet is easier to use than a micro BGA. Micro BGAs of 0.5mm and smaller pitch become a bit more difficult and costly... Continue reading
Posted Sep 9, 2014 at Screaming Circuits
The upside of a visible identity is that people see you can might possibly care and understand. The downside, is that people can find you. Today, I'm sort of treading the line between the two. I'm testing out some Twitter... Continue reading
Posted Sep 5, 2014 at Screaming Circuits
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My last post mused on the affordability of assembly at Screaming Circuits for the maker/very small business/kickstarter community. My hypothetical Arduino-compatible dual motor driver Kickstarter came out to $9.81 per board at a quantity of 250. That's probably more than... Continue reading
Posted Sep 3, 2014 at Screaming Circuits
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Can Screaming Circuits, a full-service assembly provider, compete with a “no-frills” assembly house? Upon first thought, it might seem like Screaming Circuits, would be too expensive for anything but well-funded big-business and big-education. In reality, that may not at all... Continue reading
Posted Aug 22, 2014 at Screaming Circuits
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Coming soon, on the heals of National High Voltage AC month, Screaming Circuits has declared October 2014 to be National National Low Earth Orbit (LEO) Month in honor of the October 4, 1957 launch of Sputnik. This month, rather than... Continue reading
Posted Aug 21, 2014 at Screaming Circuits
ESD, or electrostatic discharge, is of great concern to anyone who deals with electronics. That's obvious. What's not necessarily so obvious, is that some times, you don't even need to be all that close to the circuit board or component... Continue reading
Posted Aug 20, 2014 at Screaming Circuits
So... You just got a nice big PC board back from the fab shop. You set one on your desk to admire only to discover that it's warped. What do you do? There are two primary types of causes of... Continue reading
Posted Aug 15, 2014 at Screaming Circuits
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Take a look at the closeup of one of our Beagleboards here on the right. That's what package on package (POP) looks like up close. The bottom chip is a Texas Instruments OMAP processor, in BGA form with 0.4mm pitch... Continue reading
Posted Jul 31, 2014 at Screaming Circuits
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In honor of Nikola Tesla, hero to engineers', birthday (July 10, 1856), Screaming Circuits has declared this to be National High Voltage AC Month. For those of you who don't know Nikola Tesla... Never mind. If you don't know who... Continue reading
Posted Jul 22, 2014 at Screaming Circuits
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There are a lot of places suitable for running an electronics manufacturing plant. Ours is in Oregon, USA – the Silicon Rain forest, if you will. The slower pace of life here, the proximity to recreation and wilderness, the rain... Continue reading
Posted Jun 19, 2014 at Screaming Circuits
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So, here in Oregon, USA, it's Friday the 13th - and, we have a full moon, to boot. In many societies, both of those would portend of doom. Baseball players tend to be a suspicious lot, so if you're a... Continue reading
Posted Jun 13, 2014 at Screaming Circuits
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I referred to "panel rails" in my blog about V-score panels, but I didn't explain the "whats" and whys" of panel rails. You might find yourself asking "what are panel rails and why would I want to use them?" Well,... Continue reading
Posted Jun 12, 2014 at Screaming Circuits
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Our parent company, Milwaukee Electronics was founded 60 years ago, in 1954. That's quite a long time in terms of electronics. 60 years back 1954 was a big year for transistor electronics. The first commercially produced transistor radio, the Regency... Continue reading
Posted Jun 9, 2014 at Screaming Circuits
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Some people, especially in the manufacturing industry, refer to PC board panels by the term "palette." I can't seem to avoid thinking of the big wooden thing used for shipping stuff, so it's tough for me to call a panel... Continue reading
Posted Jun 6, 2014 at Screaming Circuits
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In my prior post, I covered V-sore panelization. The other very common panelization method is called tab-routing, as in routed, but with tabs. (That's "routed" like using a router, not as in Napoleon being chased out of Russia.) Following this... Continue reading
Posted Jun 2, 2014 at Screaming Circuits
Screaming Circuits added a favorite at Everything Typepad
May 15, 2014
Screaming Circuits added a favorite at Everything Typepad
May 15, 2014
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My last post talked a bit about panelization, in general. Today, I'm taking a look at V-Score panelization. V-score is created by running a V-shaped blade across the top and bottom of the panel without cutting all the way through.... Continue reading
Posted May 15, 2014 at Screaming Circuits
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Most PCBs we receive are individually routed, i.e., not panelized. That doesn't mean that, sometimes, sending them in a panel isn't a good idea, or required. Generally, we don't require panels (sometimes called a pallet), but there are some cases... Continue reading
Posted May 12, 2014 at Screaming Circuits
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I've been on a bit of a package binge lately. First talking about metric vs. US passive sizes, and then a very tiny ARM Cortex M0 from Freescale. The Freescale BGA part checks in at 1.6mm x 2mm. That's cool... Continue reading
Posted Apr 16, 2014 at Screaming Circuits
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An hour later, you can join me to explore the very basics of Field Programmable Gate Arrays in FPGAs - Light at the End of the Learning Curve. The session is on Tuesday, April 1st, from 3:30 - 4:30, in... Continue reading
Posted Mar 31, 2014 at Screaming Circuits
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If you do happen to end up at the EE Live show, be sure to catch my session: Best Practices in Circuit Board Design. I'll show the most common traps we see that can cause manufacturability issues. The session is... Continue reading
Posted Mar 31, 2014 at Screaming Circuits
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If you're in San Jose, CA this week, stop by and see us at the EELive show. We'll be in booth 927 - just a short walk, and a left turn from the entrance. Show hours are: Tuesday, April 1,... Continue reading
Posted Mar 31, 2014 at Screaming Circuits
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I recently had a conversation with a friend about 0.4mm pitch BGAs. The specific part is the Freescale KL03 ARM Coretex-M0+ microcontroller in a 1.6mm x 2mm, 04.mm pitch package. That's a 20 ball wafer scale BGA form factor. I... Continue reading
Posted Feb 27, 2014 at Screaming Circuits