 The great searcher out to you by Digikey. And thanks to Digikey every single week, later to use the power of engineering, help you find things that you want on digikey.com. Later, what are you looking for this week on digikey.com? Well, what I thought I would show off was actually just 10 micro farad capacitors. So if you go back to the overhead, you know, just showing off a project why I replaced, well, this, you know, I've got 10 micro farad capacitors here and here. This is a little buck at that boost converter to 12 volts. So I've got these two big caps here or 10 micro farads. And then over on this board, you know, I've got just, you know, all of these are 10 micro farads, all these chonkers over here. This was a design where I had 200 micro farads, turns out too big, one victim back to 10. And I realized I haven't done a great search where I talk about getting just jellybean 10 micro farad caps. And we use a lot of 10 micro farad caps. Obviously, you pair them nicely, like a cabernet with some lasagna. You get your 10 micro farad, your one micro farad, and then a 0.1 micro farad. You put them together, you've got a full decade, you know, coverage for high frequency and like bulk capacitance. And we, you know, sometimes we use electrolytics. And there's times to use electrolytics. So for example, when you need high voltage, a lot of bulk capacitance, this is 47, 25 volt. For the pricing, you just go to electrolytic, but there's still a lot of 10 micro farads. Why 10 micro farad electrolytics? Ceramics. Ceramic capacitors are inexpensive, easy to pick in place. They're small. They're very low ESR, which means that they'll perform fairly well at reducing high frequency noise. But mostly they're just like really easy to pick in place and small. I mean, like tantalum is like a rare earth metal that a lot of people, you know, it's complicated to make sure that you're getting it like ethically sourced and also they're much more expensive. So I don't really use tantalum kind of at all. I don't think I've like use it all. I basically just use electrolytics when I need 47 and above. And for anything below, I use ceramics. And there's only one time I'll say that you should not use ceramics. And there are some power supply chips that need high ESR for stability because they use that the series resistance of the capacitor to stabilize the feedback. I think the MIC 5205 are like, I don't remember exactly the part number, but I remember seeing once, you know, I tried making a power supply with an older chip. It was an old 1117 or something. And I tried building on a PCB with ceramics. It actually wasn't stable. I saw like it was kind of oscillating. When I put on the same capacitance, but electrolytic, it stabilized. So, you know, it happens. Okay, so let's go to the computer. There's like some peanut food stuff in this photo. That's kind of cool. Okay, so your standard 10 microfarad ceramic capacitor is lovely. And there's lots. Don't forget, there's dark mode. But I think it's easier to read the video in light mode. So I'm going to just continue in light mode. So first off, we want only active 10 microfarad, of course. And then let's just do, you know, in stock and exclude marketplace just to look at what's in stock right now at Digikey and sold from Digikey. So you get it like instantly. Okay, so now we can actually start, you know, there's still a thousand options just for the 10 microfarad caps. So the next thing I like to look at is tolerance. And the tolerance is actually related to the, actually, sorry, let's do surface mount. Also avoid, although there's many through whole ceramic capacitors. Okay. So when you look at the tolerances, much like resistors, capacitors have tolerance and the tolerance is going to be related to the temperature coefficient, which is also used as it's at the dielectric. And sometimes you'll see this X5R, X7R, Y5V. So Y5V is going to be like the cheapest one. And that's the one that's plus minus 20%. But like these days, you don't have to go with like it's, I don't really use the Y5V anymore because you get much better performance from like X5R, X7R, X7R and X5R I think are slightly different temperature. Like one is industrial and one's commercial. So I look for like 10, 20% is kind of what I go with. A reasonable price and also like doesn't, it's not like too wobbly when it comes to the consistency. Next up, you're a voltage rating. So in general, you would, you want to use the lowest voltage rating for your situation. So if you're, you know, it's a 5V power supply, use 6.3V. 9V, 8V power supply, 10V, 12V, 16V. You always go a couple volts up and then that's your voltage rating. However, I don't want to stock like 5 different voltages for different use cases because a lot of my stuff is 3V or 5V. So if you get 6.3V, well, you saw that little boost converter goes into 12V. I don't want to have to pick like, oh, that one cap is a 16 and that one's a, so I pretty much always pick 16 to 25. I feel like that really covers a lot. Honestly, I tend to use 16, but like depending on your use cases, maybe you need that extra boost for 25, go for it. Okay. And that actually cuts it down a lot. So it's like now 350 options. So next is the package case. So, you know, without going into like, you know, like a 30 minute discussion, there's a lot of videos about it. The bigger the package, the more, so the bigger the package and the coefficient, depending on the coefficient, you're going to have less DC bias loss of your bulb capacitance. What do I mean? So electrolytic capacitors are actually kind of nice in that when you put 16 volts across them, 47 microfarad, you're going to actually get 47 microfarad of capacitance. That's not true of ceramics. The DC voltage across them actually greatly reduces like easily 50% or more the capacitance rating. So you buy a 10 microfarad capacitor, you put six volts across it or five volts across it, now it's at 4.7, which is fine. You just add, you know, that's why I put lots of them on there. There will be like a penny or two a piece, but it's something to think about. So if you're like, I mean, I wouldn't design these into filters. I think if you're doing filters, you're going to use smaller capacitors and you'll use COG, C0G, which is a dielectric that doesn't lose the bulb capacitance. But let's just look at the data sheet here. Actually, I don't know if it's in the data sheet. It might be in the spec sheet. Yeah, okay. Voltage-D rating. So there's temperature-D rating as they get hotter. They also lose up to 60%. So watch for that. But the one that is voltage, hold on, it might not be in this D rating. Okay, this is only temperature-D rating. Applied voltage. It doesn't have the graph. Okay, hold on, one second. If you go to the product page, because I saw this earlier, characteristics. So this has fairly good temperature characteristics. That's good. But the DC bias characteristics you can see here, as we go from zero to like five, you've lost 50%. And you go higher, you lose even more. And that is a 0805. If you go to, hold on, got mixed up. If you go to like a 1206 or whatever. So let's look at this 1206 capacitor and look at this specifications. Hopefully it's in this document. I probably should have, I probably should have pulled these up. Ah, here you go. J rating. DC bias. Okay. So this is still the X5R. This is not the specific one. One moment. Did I click on the spec? Let me find one that has, I may not be able to find it. But basically the larger it is, maybe TDK has characteristic. Okay. So for this one, the 1206 instead of the 0805, you'll notice at the five volt, you lose 15%. Or as you remember, on the 0805, we lost 50%. So the bigger the physically larger the capacitor in general, check the spec sheet. Like you see, sometimes you have to like look around. It's going to de-rate, but the de-rating will vary. And the de-rating also varies by the dielectric. And the, so it's like Y5, X5R, X7R, C0G, small. Obviously for like, if you're getting your like 22 picofarad capacitors, those are not going to be de-rating as much because you're going to get ones that are that have a high quality dielectric. But when you're talking about the bulk capacitance, it does matter. So you just put like twice as many on. I don't know. They're like a penny or two a piece. So let's go back. I will, I tend to use 0805s to be honest. So let's look at 0805. It's about 100 options. And there's a couple of different ones. Again, different voltages, what you're going to be paying for. I mean, you're like, what's the difference? All these Ys are 100. So they're different heights and sizes. Some are different temperature gradings. And some are just different tape and reel sizes. So like there's the, this one, like I think is, you know, I don't know, the G maybe is like the reel is bigger. When you get it, there's like a 3000. Yeah, it's like a 2000 tape reel, 3000, 4000, 10,000. That's another thing. If you're getting these caps by the reel, because you're in a picking place, the 10 K piece reels are awesome because you load them once you forget them, but your feeder has to support that size reel. Something which I learned once when I accident was like, oh, let's buy the 10,000 and then we got this like 13 inch reel and I realized it wouldn't go on the picking place machine. But if you're just buying these generically, this one is super cool, the CL21A106 CoQ NNE 10 microfarad Samsung generic cap. I use these by like the bazillion. We literally sell like a million a year through all of our components that go to our products. So that's my pick for the research. That's great search.