![]() Like everything else in life, Darlington pairs have trade offs. It’s two transistors configured as a Darlington pair. That’s because the TIP120 isn’t a transistor. big problem with the TIP120 is that it’s inefficient when running the motor. In specific example, he’s using a TIP120 to control a motor at 5 volts drawing 1 amp of current. There is always room to improve once you get the basic circuit working. However, for most hobbyist-designed circuits, we don’t need the best performance, nor the best price – we’re going to use the parts we have on hand. The TIP series aren’t always the best transistors for the job. Any retail shop that stocks a few electronics parts will have at least one of the TIP series. The TIP series is also out in the distribution channel – they’ve been used for 40 years. Much of that documentation is already out there on the internet. The TIP series has been used in thousands of classes, tutorials both online and off, and millions of projects over the years. Why are we still using parts designed when man first walked on the moon? The same reason people are still using the 555 timer: they’re simple, they’re easily available, they’re robust, and most of all, they get the job done. The series was originally released in 1969. In fact, “TIP” stands for Texas Instruments Power. TIP is the part number prefix for a series of power transistors created by Texas Instruments. These parts are still perfectly usable for experienced designers, and have a lot to offer new hardware hackers. Get them out of the food chain. No offense to, but we have to disagree. ![]() and a few others have been calling for everyone to send their old parts to the landfill – not use them, nor gift them to new experimenters. This page belongs to, creator of Fidonet, and one of the early authors of what would become Phoenix BIOS. This all came to a head with a page called “Do Not TIP,” which was linked in the Arduino subreddit. “Don’t use old parts” they cry, “Go with newer components.” You can often find these recommendations on Arduino forums. We’ve seen a growing number of posts and recommendations around the net regarding components, specifically transistors. ![]()
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