Author Archives: Duane

About Duane

Duane is the Web Marketing Manager for Screaming Circuits, an EMS company based in Canby, Oregon. He blogs regularly on matters ranging from circuit board design and assembly to general industry observations.

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, … Continue reading

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Packing Parts for Personal Manufacturing

Manufacturing, especially small volume one-time-only builds (like a prototype) is hard. It’s not wise for most people to actively seek out chaos, but that’s what we do, and we do it wisely. That’s what we’ve been doing since 2003. We … Continue reading

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Proper PCB Storage — The Top 3 Hazards

It’s late. Do you know where your printed circuit boards are? Let me rephrase that: Can unused PCBs be stored for future use? Yes, they can – if stored properly. Keep them wrapped up, or sealed in a bag. Anti-static isn’t necessary … Continue reading

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What is Personal Manufacturing?

There’s a lot of buzz floating around these days, about “Personal Manufacturing.” Screaming Circuits has more than a decade of bringing personal manufacturing to engineers. We pretty much started the category in the electronics industry, so we’re quite familiar – but … Continue reading

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Manufacturability Index in Practice

My prior blog covered the Screaming Circuits Manufacturability Index. It’s something I’ll be using from time to time when discussing new components I run across. I’ve got a few examples to put the numbers into context. On the low side … Continue reading

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Component Manufacturability Index

Screaming Circuits’ Manufacturability Index Ranks the difficulty of assembling a component. Index is one to five, with one being easiest, and five being the most complex Sub index: a, b, c a: Not a challenge within the number rank b: Typical … Continue reading

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Mark Those Diodes!

Every now and then, I write about ambiguity with diode marking; like here, here, or here. It’s a pretty important subject to get right, but what does it have to do with Marco Polo, you ask? Well, that depends on whether … Continue reading

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Indicating Polarity on Diodes

Everyone knows which way current flows through a diode. Right? Of course they do. Diodes only permit current to flow in one direction. Well, sort of. In the case of your garden variety rectifier, barrier diode, or LED, that’s true. That … Continue reading

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Using the Newest Gen Arm, Part III

The continuing saga of the 0.4 mm pitch KL03 ARM microcontroller. If you haven’t yet done so, read part I and part II. Today, I have a look at the good, the bad, and the ugly – or more accurately, the … Continue reading

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Using the Newest Gen Arm, Part II

I’m a bit behind in my blog work — well, way behind, actually. I started this series back in January with the intro post. Here’s where I am right now: I have three different sets of PCBs. One set, I took … Continue reading

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