The December 2022 issue of IEEE Spectrum is here!

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Shielding technology company, Tech-Etch, is now offering EMI shielding D-Connector gaskets in a wide variety of materials. The company has five standard sizes of 9, 15, 25, 37, and 50-pin configurations, available in stainless steel, beryllium copper, X, Y, Z axis conductive foam, and metalized fabric consisting of a metalized fabric over a polyurethane foam core.

The company has five standard sizes of 9, 15, 25, 37, and 50-pin configurations, available in stainless steel, beryllium copper, X, Y, Z axis conductive foam, and metalized fabric consisting of a metalized fabric over a polyurethane foam core.

In addition, Tech-Etch also carries four conductive elastomers in its D-Connector product line. Series 1000 Supershield is a silicone elastomer filled with conductive metal particles to provide high EMI shielding effectiveness and an environmental seal. Series 4000 Multishield is a composite material containing excellent EMI shielding with an efficient environmental seal. Series 5000 Monoshield is intended for applications where the gasket is limited to 0.02 inch thickness and gap irregularities do not exceed 0.003 in. Series 5500 Weaveshield is a composite EMI shielding and pressure seal gasket material used for very small gaps having a joint unevenness of no more than 0.002 in. The material is comprised of a woven aluminum wire screen impregnated with either a neoprene or silicone elastomer. Custom gaskets can be manufactured to customer specifications.

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The Transistor at 75

The past, present, and future of the modern world’s most important invention

2 min read
A photo of a birthday cake with 75 written on it.
Lisa Sheehan
LightGreen

Seventy-five years is a long time. It’s so long that most of us don’t remember a time before the transistor, and long enough for many engineers to have devoted entire careers to its use and development. In honor of this most important of technological achievements, this issue’s package of articles explores the transistor’s historical journey and potential future.

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