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Help With This Inductor Anybody? Answered

Hey. I'm still learning a lot about electronics, and I'm still very new to that kind of thing, but am trying an electronics project for the Green contest anyway. I did some research on how step-up converters work and finally have settled on a circuit that would work for my project. My problem lies with one of the parts. I needed a 68uH inductor. When I ordered it, the picture below was what I got. This didn't seem quite right. It may be the correct thing, I don't know. So what I'm asking is... A. Is this the part I'm looking for? and B. How would I attach this to the PCB I'm etching for the project. Thanks in advance. My pic was a bit blurry so I found something that looked similar from the internet to go along with it.

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westfw (author)2008-04-06

That looks very small for a 68 micro-henry inductor, especially for one capable of dealing with the sorts of currents needed for a step-up power supply. Perhaps 68 nano-henries? Do you have a link to what you ordered? Now, it COULD be that small - Here's a data sheet of inductors about that size that would do 130mA if it were 68 microHenry...

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Gjdj3 (author)westfw2008-04-07

Darn it. I did get a nH inductor. I'm going to get a new one, and not a SMD either. Thanks for your help though. That thing did seem awfully small.

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NachoMahma (author)2008-04-06

. I believe you have a SMD package in your hand.

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guyfrom7up (author)NachoMahma2008-04-06

yep, to solder you need 2 traces (no holes) that come close to eachother (they touch the pads of the smd device) and you apply solder to eachend. You need like 4 hands to solder something like that. one to hold the iron one to hold the solder one to hold the board (or use tape) one to hold tweezers to hold the device.

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tech-king (author)guyfrom7up2008-04-07

i hate to put it bluntly, but i gather you dont know how to solder smt properly, seeings as you need 2 hands and good lighting. and everyone, please stop critisising smts. they may be harder to solder, but they make things like your ipod and radio and computer possible. smts are not as hard to solder as everyone says

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Gjdj3 (author)guyfrom7up2008-04-06

Thanks again, and umm, just one more thing. Could I just attach wires to each lead and wire those into the board?

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guyfrom7up (author)Gjdj32008-04-06

you could do that too, but that'd be hard.

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Gjdj3 (author)guyfrom7up2008-04-06

Thank you also. I'll use that tutorial. It looks helpful. Now I can go on with my project. Yay!

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Gjdj3 (author)NachoMahma2008-04-06

THANK YOU! I'm really happy now. I thought I ordered the wrong thing. Thanks for your help.

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NachoMahma (author)2008-04-06

. I think what they are trying to tell you is, for hand soldering, SMD sucks - big time. See if you can find the inductor with axial leads.

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LinuxH4x0r (author)2008-04-06

Like Nacho said, its smd, the hardest thing ever. Good luck!

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GorillazMiko (author)2008-04-06

The Evil Instructabler needs help, I see.

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