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Must have capacitors, resistors, transistors Answered

I am wanting to know the best values/ most used values in electronics projects for resistors, capacitors, and transistors. Suggestions?

Also when purchasing capacitors, ceramic vs. electrolyte? Are ceramic mostly for lower capacitance values? And lastly what is the difference between a 10k resistor and a 10 Ohm resistor. What I have figured out is that the 10k is a higher resistance value. 

Thanks, diamondmine


The most commonly used transistors are the 2N3904 (NPN) and the 2N2907 (PNP)

Hope this helps.

Read up and learn about resistors and capacitors first. You have a lot to learn. Once you have an understanding of them then you can think about buying some. But it's best to just buy what you need for the project at hand.

Yes I certainly realize that but I happen to be traveling to a larger city, where there are actually electronic component stores. My own town is much to small and shipping to it is through the roof. So I would love to purchase a large quantity while I have the chance. Then I could learn about all my parts and have them there to prototype circuits and to see first hand how said component works.


3 years ago

10K Ohm resistors are 10 kilo (10 times one thosand) ohms, so 10000 Ohms versus your 10 ohm. (see http://en.wikipedia.org/wiki/Metric_prefix for what K, M etc means)

A nice thing about resistors is that you can add them in series, so if you need say 300 ohm you can add three 100 ohms (and thats ignoring that due to the tolerances - usually +/- 10% (the set below is 5%) of resistors you rarely need to add up to the exact value.

I don't' really now what is common values, I also suspect it depends on what projects you build (analog vs digital for example). Often you will be able to buy either grab-bags with a lot of different values/combinations, but you can also buy a whole "series" like this https://www.sparkfun.com/products/retired/9258 (sorry if that one is not for sale anymore, but you can see in the desription what it is)

You can see the different series (based on the tolerances to cover all values) here


I hope this helps more than it confuses.