The RoHS-compliant 153 CRV series of vertical SMD aluminum electrolytic capacitors are compatible with lead-free soldering processes and offer an operating life from 200,000 hrs at 40C. They are available in case sizes with measurements ranging from 4 × 4 × 5.3 mm to 10 × 10 × 10 mm. Standard capacitance values are 0.47 to 470F with voltage ratings from 6.3 to 50V. They are charge- and discharge-proof.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Highly regarded engineer and physicist Ransom Stephens speaks with Design News about his extensive science and engineering background, the serious yet funny study of neuroscience, and how one primes their brain for innovation.
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