Why can't 1% Capatitors be always used to replace a 5% Capacitor on a Electronic desing?

Question

Could you give me an example of why?

I mean that a 1% tolerance of nominal value is a narrower window that 5%. 1% should work without discretion to replace a 5%.... shouldn't it? I heard there are some designs where that can't be taken as a proper replacement.

Answer 1

when electrical circuits are designed unless there is a very sensitive voltage control the voltage will vary. This can be due to mains voltage supply temperature etc. so if the capacitor does not have a large enough tolerance it will fail to meet its requirements the circuit needs.
Also in tuned circuits frequency can vary especially if it is a multiple of the mains supply. So if it is the reactence that is important it may be necessary to have a wider tolerance.

Answer 2

The percentages given only refer to the degree of variance of the capacitor value. For a 100 microfarad capacitor, the 1 % tolerance type would change in value, for any reason, by 1 microfarad. For the 5%, then the change would be 5 microfarad, and that is all that this means. If you want to use a tighter tolerance from what is specified, go for it. If the 1% is required, then a 5% would not be a good choice since it could cause the circuit to not operate properly.
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Answer 3

They will always work if of the same material.
If you substitute another type of dielectric, you must be aware of other factors involved. Temperature stability and range, dissipation (frequency range) aging, moisture resistance, polarity and micro-phonics are some. Certain capacitors, notably ceramics, can change value depending on the voltage across them. Always look at the manufacturers data books to compare the specs important to your design when considering a substitution. This is true for most components. You'll be glad you did.

Answer 4

Cost is biggest factor. Next factor is the way they get to be precision. Material used. For instance glass capacitors. Survive widest temperature swings but capacity varies too much to be precision. Styrene can be made to very high tolerance but is terrible for temperature swings. 5 % capacitors can be made reasonably cheaply and have a reasonable temperature range. If your application occurs in a tightly controlled environment, you may be able to sub 1 percenters for 5.

Answer 5

you would be wonderful with 8 gauge wireing. you do no longer choose the cap in any respect in spite of the undeniable fact that, that became a entire waste of money. i'm working a 900.4 amp 450 watts rms and a 5500/a million 3200 watts rms, I have not got any cap what so ever. I did in spite of if ought to do the huge 3 improve, yet no cap. to boot for working 4 hundred watts rms the biggest cap which you may realisticly quite have is a 0.5 farad cap, no longer something extra. Rule of thumb is a million.0 farad for one and all thousand watts rms, or 0.5 farad for each 500 watts rms. this is why you should purely have a 0.5 farad cap. yet in all actuality you do no longer prefer a cap, purely a waste of money. A cap ought to no longer end your headlights from dimming ever, which you should do the huge 3 improve. The cap isn't a paranormal gadget. if your having your lighting dim on you including a cap is going to function yet another tension on your already over taxed electric powered device. can no longer furnish sufficient electric powered means for each little thing your working now, throw a cap in there. How is the electrical powered device going to charge the cap? via no longer sending suitable electric powered means to different gadgets which you will ought to have working.

Answer 6

They cost more money than 5% capacitors.

If cost is not a concern, then for everything else being equal (type, working voltage, form factor, etc.) you can always substitute a higher (better) tolerance for a lower (worse) tolerance capacitor.

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Answer 7

Are these capacitors used in a tuned circuit? if they are your frequency could be in error.

Answer 8

Sure, you can use them. The cost goes up though.

Answer 9

What do you mean?