Tag Archives: Circuit Boards

What is a PCB Via and How is it Made?

Vias are actually holes drilled into PCB layers and electroplated with a thin layer of copper to provide the necessary electrical connectivity. Three most common types of plated through via are in use—plated through holes, blind holes, and buried holes—with plated through holes running through all the layers of the PCB. These are the simplest type of holes to make and the cheapest. However, they take up a huge amount of PCB space, reducing the space available for routing. Blind vias connect Read more [...]

How useful are PCB Vias?

Designers use a plated through via as a conduit for transferring signals and power from one layer to another in a multi-layer printed circuit board (PCB). For the PCB fabricator, the plated through via are a cost-effective process for producing PCBs. Therefore, vias are one of the key drivers of the PCB manufacturing industry. Use of Vias Apart from simply connecting two or more copper layers, vias are useful for creating very dense boards for special IC packages, especially the fine-pitch components Read more [...]

Make a 9V headlamp head flashlight

Here's an easy project that simple enough for electronic beginners, plus the supplies required are probably laying around your house or workshop. Could you buy the same thing for just a few dollars more? Sure you could, but you'd miss out on the satisfaction of assembling this project all by yourself. Here's what you need: 2 high intensity white LEDS (you can use other colors if desired) small perf board 2 470 ohm resistors toggle switch or slide switch 9V battery snap 9V battery small Read more [...]

What causes oxidation on surface mount pads?

Solder contacts must meet minimum contact rating specifications to effectively be used. But sometimes you'll begin to solder an electronic component to a board and realize that oxidation has occurred. Why does this happen? Typically, there are two reasons that oxidation occurs on boards. The main reason is improper storage and handling. Boards should be received from your supplier in a vacuum pack, which would render them clean and ready to accept solder. Once the vacuum seal has been broken, Read more [...]

What Happens to Old Electronic Components and Boards?

We came across this blog post the other day and thought it was worth bringing here. Here's an excerpt: Yesterday I had the opportunity to shoot video in a facility that is the largest company in America that recycles the glass from electronics and computers. The men who own this company, built the machines that separate and break up the glass, themselves. Electronic products and computers are torn apart. The plastics are sold to one vendor while the electronics and circuit boards are sold Read more [...]