Can you change capacitor size?
There is a maximum of +10% tolerance in microfarad rating on replacement start capacitors, but exact run capacitors must be replaced. Voltage rating must always be the same or greater than original capacitor whether it is a start or run capacitor.
Does size of capacitor matter?
Sometimes (or even usually) there is no real difference, so you can choose depending on the size itself: if you solder by hand, bigger size can be an advantage. Voltage ratings, ESR/Q value, aging, temperature stability, price, packaging convenience for automated pick & place, etc.
Can I replace a 25v capacitor with a 50V?
Yes. Just don’t go below 25v. The 4.7uF is an “exact” value, whereas the 25v is a maximum rating. Probably yes: Ideally you should replace the capacitor with one of the same nominal capacitance and an equal or greater maximum voltage rating.
Are smaller capacitors better?
Capacitors are never ideal and have distinctive resonance points that limit their useful frequency response capability. Larger caps have the tendency to respond well to DC-type signals whereas smaller value chip caps have a much higher frequency response (see Figure 1).
Can I replace a 16v capacitor with an 25V capacitor?
The maximum voltage you can deal with is what the voltage rating is. Make sure you know what you are dealing with. If you use a 25v rated cap, never exceed 25V. Don’t exceed 16v for a 16v rated cap.
Can I use a 35V capacitor instead of an 25V?
If you compare the above parameters, going from 25V to 35V won’t cause a problem. The majority of low ESR parts are 25V or lower, so you’ll find less and less high-performance capacitors once you get above 35V. There is a maximum rating.
Can a microfarad rating be changed on a capacitor?
There is a maximum of +10% tolerance in microfarad rating on replacement start capacitors, but exact run capacitors must be replaced. Voltage rating must always be the same or greater than original capacitor whether it is a start or run capacitor.
Can you replace a capacitor with a higher UF?
This is not to imply bigger is better, because a capacitor that is too large can cause energy consumption to rise. In both instances, be it too large or too small, the life of the motor will be shortened due to overheated motor windings.
When do you need a run capacitor for an electric motor?
Capacitors with ratings above 70 microfarad (mfd) are starting capacitors. Run capacitors are designed for continuous duty, and are energized the entire time the motor is running. Single phase electric motors need a capacitor to energize a second phase winding.