English: Two 2N3906 transistors in TO 92 plastic packages. These are a low power discrete silicon switching transistor. These devices are so notable, they have their own article on the English Wikipedia. There's no need to recite the epic saga of the 2N3906 here, since that is being capably handled by the Wikipedia itself. Let's merely say instead that without this tiny perfect silicon wonder, Western civilization as we know it today would be poorer. Now there's a second image for the 2N3906 category, so essential to the well-run operations of Wikimedia Commons.