Hi,
Could someone help me with the rating for this cap.
Is it 5uF or 1.5uF.
Seems 'too big' for 1.5uF and the spacing between 1 and 5 is quite far apart.
Pitch is about 30mm.
Thanks for your help.

 

1.5uF 430V.

 

1.5uF 430V.

Thank you very much!

 

The Capacitor is a AC rated capacitor. These are unusual. Depending on it's application, it can also be a safety capacitor or x. y or x/y capacitors. Safety capacitors are designed to fail differently. Capacitors of this size might be found under ceiling fan capacitors.

Here https://www.parts-express.com/solen-15uf-400v-polypropylene-capacitor--027-528 is a 1.5 uF 400 V capacitor. They might also be found under motor start motor run capacitors.

This https://www.capacitorindustries.com/products/adp500s155jn/ might work for you.

 

Has it failed?
These type of caps working at relatively low current such as a small fan rarely fail.
Max.

 

The Capacitor is a AC rated capacitor. These are unusual. Depending on it's application, it can also be a safety capacitor or x. y or x/y capacitors. Safety capacitors are designed to fail differently. Capacitors of this size might be found under ceiling fan capacitors.

Here https://www.parts-express.com/solen-15uf-400v-polypropylene-capacitor--027-528 is a 1.5 uF 400 V capacitor. They might also be found under motor start motor run capacitors.

This https://www.capacitorindustries.com/products/adp500s155jn/ might work for you.

Thank you KISS.
I actually jumped the gun and bought this:
https://www.aliexpress.com/item/10P...777.html?spm=a2g0s.9042311.0.0.130b4c4dBw8tVu
Hopefully it is the right match.

 

Has it failed?
These type of caps working at relatively low current such as a small fan rarely fail.
Max.

Hi Max,

I have 3 fans, all failed. 2 stopped when i changed speeds. 1 ran very slowly at speed 1.
Out of the 3, I changed 2 0.68uF and they worked after that. It's located at the 'control board'.
The last one didn't work even after I changed the 0.68uF cap. The sympton is also different.
It turned very slowly at speed 1 but ok at speeds 2 and 3. But speed at 2 and 3 are almost the same.
I'm only guessing it's the motor cap. I'll probably measure the value tomorrow just to see.
I think I'm also going to change/check the other 0.033uF cap on the control board.
Thanks for your help.

Any clue what the cap is for?

Any clue what the above cap is for?

 

Very often it is something with the fan that causes high cap current, bearings, load etc.
A high quality polypropylene cap in this type of circuit should not be a source of frequent failure.
Max.

 

They may be noise suppression capacitors. That is the most common use for "X2" capacitors which are designed to be used directly across the AC line and if they fail, fail in a non-disastrous way. The are also used in other ways where the AC voltage withstanding ability makes them advantageous.

The top one is 0.68 microfarads, 10% tolerance (K), rated for 275 VAC (now the most common rating for caps used at up to 240 VAC nominal AC line voltage). The bottom one is 0.033 microfarads, same voltage rating but no tolerance mark I can see. Usually tolerance is not a big deal for this type of capacitor. ±20% is usually quite acceptable. Sometimes if there is no tolerance marking, ±20 is implied, but you really need the datasheet to be sure. Of course if you are replacing one you can always use tighter tolerance. Both of those capacitors are made by Panasonic (the M is Matsushita, which has apparently changed its name to Panasonic, though products sold as Panasonic have borne the M mark for a very long time). Manufacturers do change markings occasionally.

datasheet for the smaller cap
http://industrial.panasonic.com/www-cgi/jvcr13pz.cgi?E+PZ+3+ABD0029+ECQU2A333ML+7+WW
DigiKey is a major supplier of Panasonic caps

 

Hopefully it is the right match.

Very good choice. Now, "Hurry up and wait...."

 

@Jahnlee

The failures I've seen in ceiling fans have been related to not stopping the fan when changing directions. This usually kills the direction switch,
I stopped doing that after replacing one of them.

The fan speed switches mostly fail mechanically. e.g. the string gets wrapped around the fan blades and breaks the plastic switch.

I had only one capacitor failure on the oldest fan.

The last fan broke the speed switch. I also replaced the lamp holder, but apparently I didn't have too. The lamp sticks out too long, so the globe wonl't fit when using a LED lamp. I still need to fix that. Plan is to use neoprene lined Belleville washers and a star lockwasher.

I had other issues too like bad wiring and the tapped holes for the ceiling mount were stripped. I really like the mounting design. 4 screws on the edge. You remove two and loosen two. You then twist and pull. Your then offered a hook to hang the fan while disconnecting it electrically.
Way cool.

 

Very good choice. Now, "Hurry up and wait...."

Yes, it's a very long wait indeed. But at less than $2 for 10 pcs, guess I'll wait.

 

They may be noise suppression capacitors. That is the most common use for "X2" capacitors which are designed to be used directly across the AC line and if they fail, fail in a non-disastrous way. The are also used in other ways where the AC voltage withstanding ability makes them advantageous.

The top one is 0.68 microfarads, 10% tolerance (K), rated for 275 VAC (now the most common rating for caps used at up to 240 VAC nominal AC line voltage). The bottom one is 0.033 microfarads, same voltage rating but no tolerance mark I can see. Usually tolerance is not a big deal for this type of capacitor. ±20% is usually quite acceptable. Sometimes if there is no tolerance marking, ±20 is implied, but you really need the datasheet to be sure. Of course if you are replacing one you can always use tighter tolerance. Both of those capacitors are made by Panasonic (the M is Matsushita, which has apparently changed its name to Panasonic, though products sold as Panasonic have borne the M mark for a very long time). Manufacturers do change markings occasionally.

datasheet for the smaller cap
http://industrial.panasonic.com/www-cgi/jvcr13pz.cgi?E+PZ+3+ABD0029+ECQU2A333ML+7+WW
DigiKey is a major supplier of Panasonic caps

I got the 0.68uF from Vishay and it seems to work fine for the last 2 months. The 2 that I replaced all had very very low capacitance when I measured them, ircc, something like 0.1uF.